bpo-34977: Add Windows App Store package (GH-10245)

.azure-pipelines/windows-appx-test.yml

+jobs:
+- job: Prebuild
+  displayName: Pre-build checks
+
+  pool:
+    vmImage: ubuntu-16.04
+
+  steps:
+  - template: ./prebuild-checks.yml
+
+
+- job: Windows_Appx_Tests
+  displayName: Windows Appx Tests
+  dependsOn: Prebuild
+  condition: and(succeeded(), eq(dependencies.Prebuild.outputs['tests.run'], 'true'))
+
+  pool:
+    vmImage: vs2017-win2016
+
+  strategy:
+    matrix:
+      win64:
+        arch: amd64
+        buildOpt: '-p x64'
+        testRunTitle: '$(Build.SourceBranchName)-win64-appx'
+        testRunPlatform: win64
+    maxParallel: 2
+
+  steps:
+  - checkout: self
+    clean: true
+    fetchDepth: 5
+
+  - powershell: |
+      # Relocate build outputs outside of source directory to make cleaning faster
+      Write-Host '##vso[task.setvariable variable=Py_IntDir]$(Build.BinariesDirectory)\obj'
+      # UNDONE: Do not build to a different directory because of broken tests
+      Write-Host '##vso[task.setvariable variable=Py_OutDir]$(Build.SourcesDirectory)\PCbuild'
+      Write-Host '##vso[task.setvariable variable=EXTERNAL_DIR]$(Build.BinariesDirectory)\externals'
+    displayName: Update build locations
+
+  - script: PCbuild\build.bat -e $(buildOpt)
+    displayName: 'Build CPython'
+
+  - script: python.bat PC\layout -vv -s "$(Build.SourcesDirectory)" -b "$(Py_OutDir)\$(arch)" -t "$(Py_IntDir)\layout-tmp-$(arch)" --copy "$(Py_IntDir)\layout-$(arch)" --precompile --preset-appx --include-tests
+    displayName: 'Create APPX layout'
+
+  - script: .\python.exe -m test.pythoninfo
+    workingDirectory: $(Py_IntDir)\layout-$(arch)
+    displayName: 'Display build info'
+
+  - script: .\python.exe -m test -q -uall -u-cpu -rwW --slowest --timeout=1200 -j0 --junit-xml="$(Build.BinariesDirectory)\test-results.xml" --tempdir "$(Py_IntDir)\tmp-$(arch)"
+    workingDirectory: $(Py_IntDir)\layout-$(arch)
+    displayName: 'Tests'
+    env:
+      PREFIX: $(Py_IntDir)\layout-$(arch)
+
+  - task: PublishTestResults@2
+    displayName: 'Publish Test Results'
+    inputs:
+      testResultsFiles: '$(Build.BinariesDirectory)\test-results.xml'
+      mergeTestResults: true
+      testRunTitle: $(testRunTitle)
+      platform: $(testRunPlatform)
+    condition: succeededOrFailed()

.gitattributes

@@ -19,6 +19,7 @@
 
 # Specific binary files
 Lib/test/sndhdrdata/sndhdr.* binary
+PC/classicAppCompat.* binary
 
 # Text files that should not be subject to eol conversion
 Lib/test/cjkencodings/* -text

Doc/make.bat

@@ -117,10 +117,12 @@ if not exist "%BUILDDIR%" mkdir "%BUILDDIR%"
 
 if exist ..\Misc\NEWS (
     echo.Copying Misc\NEWS to build\NEWS
+    if not exist build mkdir build
     copy ..\Misc\NEWS build\NEWS > nul
 ) else if exist ..\Misc\NEWS.D (
     if defined BLURB (
         echo.Merging Misc/NEWS with %BLURB%
+        if not exist build mkdir build
         %BLURB% merge -f build\NEWS
     ) else (
         echo.No Misc/NEWS file and Blurb is not available.

Lib/test/test_pathlib.py

@@ -1521,7 +1521,7 @@ class _BasePathTest(object):
             # resolves to 'dirB/..' first before resolving to parent of dirB.
             self._check_resolve_relative(p, P(BASE, 'foo', 'in', 'spam'), False)
         # Now create absolute symlinks
-        d = support._longpath(tempfile.mkdtemp(suffix='-dirD'))
+        d = support._longpath(tempfile.mkdtemp(suffix='-dirD', dir=os.getcwd()))
         self.addCleanup(support.rmtree, d)
         os.symlink(os.path.join(d), join('dirA', 'linkX'))
         os.symlink(join('dirB'), os.path.join(d, 'linkY'))

Lib/test/test_venv.py

@@ -243,6 +243,7 @@ class BasicTest(BaseTest):
             self.assertIn('include-system-site-packages = %s\n' % s, data)
 
     @unittest.skipUnless(can_symlink(), 'Needs symlinks')
+    @unittest.skipIf(os.name == 'nt', 'Symlinks are never used on Windows')
     def test_symlinking(self):
         """
         Test symlinking works as expected

Lib/venv/__init__.py

@@ -64,10 +64,11 @@ class EnvBuilder:
         self.system_site_packages = False
         self.create_configuration(context)
         self.setup_python(context)
+        if not self.upgrade:
+            self.setup_scripts(context)
         if self.with_pip:
             self._setup_pip(context)
         if not self.upgrade:
-            self.setup_scripts(context)
             self.post_setup(context)
         if true_system_site_packages:
             # We had set it to False before, now
@@ -158,14 +159,6 @@ class EnvBuilder:
             f.write('include-system-site-packages = %s\n' % incl)
             f.write('version = %d.%d.%d\n' % sys.version_info[:3])
 
-    if os.name == 'nt':
-        def include_binary(self, f):
-            if f.endswith(('.pyd', '.dll')):
-                result = True
-            else:
-                result = f.startswith('python') and f.endswith('.exe')
-            return result
-
     def symlink_or_copy(self, src, dst, relative_symlinks_ok=False):
         """
         Try symlinking a file, and if that fails, fall back to copying.
@@ -195,9 +188,9 @@ class EnvBuilder:
         binpath = context.bin_path
         path = context.env_exe
         copier = self.symlink_or_copy
-        copier(context.executable, path)
         dirname = context.python_dir
         if os.name != 'nt':
+            copier(context.executable, path)
             if not os.path.islink(path):
                 os.chmod(path, 0o755)
             for suffix in ('python', 'python3'):
@@ -209,26 +202,22 @@ class EnvBuilder:
                     if not os.path.islink(path):
                         os.chmod(path, 0o755)
         else:
-            # See bpo-34011. When using a proper install, we should only need to
-            # copy the top-level of DLLs.
-            include = self.include_binary
-            files = [f for f in os.listdir(dirname) if include(f)]
-            for f in files:
-                src = os.path.join(dirname, f)
-                dst = os.path.join(binpath, f)
-                if dst != context.env_exe:  # already done, above
-                    copier(src, dst)
-
-            # When creating from a build directory, we continue to copy all files.
+            # For normal cases, the venvlauncher will be copied from
+            # our scripts folder. For builds, we need to copy it
+            # manually.
             if sysconfig.is_python_build(True):
-                subdir = 'DLLs'
-                dirname = os.path.join(dirname, subdir)
-                if os.path.isdir(dirname):
-                    files = [f for f in os.listdir(dirname) if include(f)]
-                    for f in files:
-                        src = os.path.join(dirname, f)
-                        dst = os.path.join(binpath, f)
-                        copier(src, dst)
+                suffix = '.exe'
+                if context.python_exe.lower().endswith('_d.exe'):
+                    suffix = '_d.exe'
+
+                src = os.path.join(dirname, "venvlauncher" + suffix)
+                dst = os.path.join(binpath, context.python_exe)
+                copier(src, dst)
+
+                src = os.path.join(dirname, "venvwlauncher" + suffix)
+                dst = os.path.join(binpath, "pythonw" + suffix)
+                copier(src, dst)
+
                 # copy init.tcl over
                 for root, dirs, files in os.walk(context.python_dir):
                     if 'init.tcl' in files:
@@ -326,7 +315,7 @@ class EnvBuilder:
                 dstfile = os.path.join(dstdir, f)
                 with open(srcfile, 'rb') as f:
                     data = f.read()
-                if not srcfile.endswith('.exe'):
+                if not srcfile.endswith(('.exe', '.pdb')):
                     try:
                         data = data.decode('utf-8')
                         data = self.replace_variables(data, context)

Misc/NEWS.d/next/Windows/2018-10-30-13-39-17.bpo-34977.0l7_QV.rst

+Adds support for building a Windows App Store package

PC/classicAppCompat.can.xml

+<CustomCapabilityDescriptor xmlns="http://schemas.microsoft.com/appx/2016/sccd" xmlns:s="http://schemas.microsoft.com/appx/2016/sccd"><CustomCapabilities><CustomCapability Name="Microsoft.classicAppCompat_8wekyb3d8bbwe"></CustomCapability></CustomCapabilities><AuthorizedEntities><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0" CertificateSignatureHash="0000000000000000000000000000000000000000000000000000000000000000"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0" CertificateSignatureHash="0000000000000000000000000000000000000000000000000000000000000000"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0" CertificateSignatureHash="0000000000000000000000000000000000000000000000000000000000000000"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0" CertificateSignatureHash="0000000000000000000000000000000000000000000000000000000000000000"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0" CertificateSignatureHash="0000000000000000000000000000000000000000000000000000000000000000"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0" CertificateSignatureHash="0000000000000000000000000000000000000000000000000000000000000000"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0" CertificateSignatureHash="0000000000000000000000000000000000000000000000000000000000000000"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.14_qbz5n2kfra8p0" CertificateSignatureHash="0000000000000000000000000000000000000000000000000000000000000000"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.15_qbz5n2kfra8p0" CertificateSignatureHash="0000000000000000000000000000000000000000000000000000000000000000"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0" CertificateSignatureHash="279cd652c4e252bfbe5217ac722205d7729ba409148cfa9e6d9e5b1cb94eaff1"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0" CertificateSignatureHash="279cd652c4e252bfbe5217ac722205d7729ba409148cfa9e6d9e5b1cb94eaff1"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0" CertificateSignatureHash="279cd652c4e252bfbe5217ac722205d7729ba409148cfa9e6d9e5b1cb94eaff1"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0" CertificateSignatureHash="279cd652c4e252bfbe5217ac722205d7729ba409148cfa9e6d9e5b1cb94eaff1"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0" CertificateSignatureHash="279cd652c4e252bfbe5217ac722205d7729ba409148cfa9e6d9e5b1cb94eaff1"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0" CertificateSignatureHash="279cd652c4e252bfbe5217ac722205d7729ba409148cfa9e6d9e5b1cb94eaff1"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0" CertificateSignatureHash="279cd652c4e252bfbe5217ac722205d7729ba409148cfa9e6d9e5b1cb94eaff1"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.14_qbz5n2kfra8p0" CertificateSignatureHash="279cd652c4e252bfbe5217ac722205d7729ba409148cfa9e6d9e5b1cb94eaff1"></AuthorizedEntity><AuthorizedEntity AppPackageFamilyName="PythonSoftwareFoundation.Python.3.15_qbz5n2kfra8p0" CertificateSignatureHash="279cd652c4e252bfbe5217ac722205d7729ba409148cfa9e6d9e5b1cb94eaff1"></AuthorizedEntity></AuthorizedEntities></CustomCapabilityDescriptor>
\ No newline at end of file

PC/getpathp.c

@@ -536,10 +536,16 @@ static _PyInitError
 get_program_full_path(const _PyCoreConfig *core_config,
                       PyCalculatePath *calculate, _PyPathConfig *config)
 {
+    const wchar_t *pyvenv_launcher;
     wchar_t program_full_path[MAXPATHLEN+1];
     memset(program_full_path, 0, sizeof(program_full_path));
 
-    if (!GetModuleFileNameW(NULL, program_full_path, MAXPATHLEN)) {
+    /* The launcher may need to force the executable path to a
+     * different environment, so override it here. */
+    pyvenv_launcher = _wgetenv(L"__PYVENV_LAUNCHER__");
+    if (pyvenv_launcher && pyvenv_launcher[0]) {
+        wcscpy_s(program_full_path, MAXPATHLEN+1, pyvenv_launcher);
+    } else if (!GetModuleFileNameW(NULL, program_full_path, MAXPATHLEN)) {
         /* GetModuleFileName should never fail when passed NULL */
         return _Py_INIT_ERR("Cannot determine program path");
     }

PC/layout/__main__.py

+import sys
+
+try:
+    import layout
+except ImportError:
+    # Failed to import our package, which likely means we were started directly
+    # Add the additional search path needed to locate our module.
+    from pathlib import Path
+
+    sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
+
+from layout.main import main
+
+sys.exit(int(main() or 0))

PC/layout/support/catalog.py

+"""
+File generation for catalog signing non-binary contents.
+"""
+
+__author__ = "Steve Dower <steve.dower@python.org>"
+__version__ = "3.8"
+
+
+import sys
+
+__all__ = ["PYTHON_CAT_NAME", "PYTHON_CDF_NAME"]
+
+
+def public(f):
+    __all__.append(f.__name__)
+    return f
+
+
+PYTHON_CAT_NAME = "python.cat"
+PYTHON_CDF_NAME = "python.cdf"
+
+
+CATALOG_TEMPLATE = r"""[CatalogHeader]
+Name={target.stem}.cat
+ResultDir={target.parent}
+PublicVersion=1
+CatalogVersion=2
+HashAlgorithms=SHA256
+PageHashes=false
+EncodingType=
+
+[CatalogFiles]
+"""
+
+
+def can_sign(file):
+    return file.is_file() and file.stat().st_size
+
+
+@public
+def write_catalog(target, files):
+    with target.open("w", encoding="utf-8") as cat:
+        cat.write(CATALOG_TEMPLATE.format(target=target))
+        cat.writelines("<HASH>{}={}\n".format(n, f) for n, f in files if can_sign(f))

PC/layout/support/constants.py

+"""
+Constants for generating the layout.
+"""
+
+__author__ = "Steve Dower <steve.dower@python.org>"
+__version__ = "3.8"
+
+import struct
+import sys
+
+VER_MAJOR, VER_MINOR, VER_MICRO, VER_FIELD4 = struct.pack(">i", sys.hexversion)
+VER_FIELD3 = VER_MICRO << 8 | VER_FIELD4
+VER_NAME = {"alpha": "a", "beta": "b", "rc": "rc"}.get(
+    sys.version_info.releaselevel, ""
+)
+VER_SERIAL = sys.version_info.serial if VER_NAME else ""
+VER_DOT = "{}.{}".format(VER_MAJOR, VER_MINOR)
+
+PYTHON_DLL_NAME = "python{}{}.dll".format(VER_MAJOR, VER_MINOR)
+PYTHON_STABLE_DLL_NAME = "python{}.dll".format(VER_MAJOR)
+PYTHON_ZIP_NAME = "python{}{}.zip".format(VER_MAJOR, VER_MINOR)
+PYTHON_PTH_NAME = "python{}{}._pth".format(VER_MAJOR, VER_MINOR)
+
+PYTHON_CHM_NAME = "python{}{}{}{}{}.chm".format(
+    VER_MAJOR, VER_MINOR, VER_MICRO, VER_NAME, VER_SERIAL
+)
+
+IS_X64 = sys.maxsize > 2 ** 32

PC/layout/support/distutils.command.bdist_wininst.py

+"""distutils.command.bdist_wininst
+
+Suppress the 'bdist_wininst' command, while still allowing
+setuptools to import it without breaking."""
+
+from distutils.core import Command
+from distutils.errors import DistutilsPlatformError
+
+
+class bdist_wininst(Command):
+    description = "create an executable installer for MS Windows"
+
+    # Marker for tests that we have the unsupported bdist_wininst
+    _unsupported = True
+
+    def initialize_options(self):
+        pass
+
+    def finalize_options(self):
+        pass
+
+    def run(self):
+        raise DistutilsPlatformError(
+            "bdist_wininst is not supported in this Python distribution"
+        )

PC/layout/support/filesets.py

+"""
+File sets and globbing helper for make_layout.
+"""
+
+__author__ = "Steve Dower <steve.dower@python.org>"
+__version__ = "3.8"
+
+import os
+
+
+class FileStemSet:
+    def __init__(self, *patterns):
+        self._names = set()
+        self._prefixes = []
+        self._suffixes = []
+        for p in map(os.path.normcase, patterns):
+            if p.endswith("*"):
+                self._prefixes.append(p[:-1])
+            elif p.startswith("*"):
+                self._suffixes.append(p[1:])
+            else:
+                self._names.add(p)
+
+    def _make_name(self, f):
+        return os.path.normcase(f.stem)
+
+    def __contains__(self, f):
+        bn = self._make_name(f)
+        return (
+            bn in self._names
+            or any(map(bn.startswith, self._prefixes))
+            or any(map(bn.endswith, self._suffixes))
+        )
+
+
+class FileNameSet(FileStemSet):
+    def _make_name(self, f):
+        return os.path.normcase(f.name)
+
+
+class FileSuffixSet:
+    def __init__(self, *patterns):
+        self._names = set()
+        self._prefixes = []
+        self._suffixes = []
+        for p in map(os.path.normcase, patterns):
+            if p.startswith("*."):
+                self._names.add(p[1:])
+            elif p.startswith("*"):
+                self._suffixes.append(p[1:])
+            elif p.endswith("*"):
+                self._prefixes.append(p[:-1])
+            elif p.startswith("."):
+                self._names.add(p)
+            else:
+                self._names.add("." + p)
+
+    def _make_name(self, f):
+        return os.path.normcase(f.suffix)
+
+    def __contains__(self, f):
+        bn = self._make_name(f)
+        return (
+            bn in self._names
+            or any(map(bn.startswith, self._prefixes))
+            or any(map(bn.endswith, self._suffixes))
+        )
+
+
+def _rglob(root, pattern, condition):
+    dirs = [root]
+    recurse = pattern[:3] in {"**/", "**\\"}
+    if recurse:
+        pattern = pattern[3:]
+
+    while dirs:
+        d = dirs.pop(0)
+        if recurse:
+            dirs.extend(
+                filter(
+                    condition, (type(root)(f2) for f2 in os.scandir(d) if f2.is_dir())
+                )
+            )
+        yield from (
+            (f.relative_to(root), f)
+            for f in d.glob(pattern)
+            if f.is_file() and condition(f)
+        )
+
+
+def _return_true(f):
+    return True
+
+
+def rglob(root, patterns, condition=None):
+    if isinstance(patterns, tuple):
+        for p in patterns:
+            yield from _rglob(root, p, condition or _return_true)
+    else:
+        yield from _rglob(root, patterns, condition or _return_true)

PC/layout/support/logging.py

+"""
+Logging support for make_layout.
+"""
+
+__author__ = "Steve Dower <steve.dower@python.org>"
+__version__ = "3.8"
+
+import logging
+import sys
+
+__all__ = []
+
+LOG = None
+HAS_ERROR = False
+
+
+def public(f):
+    __all__.append(f.__name__)
+    return f
+
+
+@public
+def configure_logger(ns):
+    global LOG
+    if LOG:
+        return
+
+    LOG = logging.getLogger("make_layout")
+    LOG.level = logging.DEBUG
+
+    if ns.v:
+        s_level = max(logging.ERROR - ns.v * 10, logging.DEBUG)
+        f_level = max(logging.WARNING - ns.v * 10, logging.DEBUG)
+    else:
+        s_level = logging.ERROR
+        f_level = logging.INFO
+
+    handler = logging.StreamHandler(sys.stdout)
+    handler.setFormatter(logging.Formatter("{levelname:8s} {message}", style="{"))
+    handler.setLevel(s_level)
+    LOG.addHandler(handler)
+
+    if ns.log:
+        handler = logging.FileHandler(ns.log, encoding="utf-8", delay=True)
+        handler.setFormatter(
+            logging.Formatter("[{asctime}]{levelname:8s}: {message}", style="{")
+        )
+        handler.setLevel(f_level)
+        LOG.addHandler(handler)
+
+
+class BraceMessage:
+    def __init__(self, fmt, *args, **kwargs):
+        self.fmt = fmt
+        self.args = args
+        self.kwargs = kwargs
+
+    def __str__(self):
+        return self.fmt.format(*self.args, **self.kwargs)
+
+
+@public
+def log_debug(msg, *args, **kwargs):
+    return LOG.debug(BraceMessage(msg, *args, **kwargs))
+
+
+@public
+def log_info(msg, *args, **kwargs):
+    return LOG.info(BraceMessage(msg, *args, **kwargs))
+
+
+@public
+def log_warning(msg, *args, **kwargs):
+    return LOG.warning(BraceMessage(msg, *args, **kwargs))
+
+
+@public
+def log_error(msg, *args, **kwargs):
+    global HAS_ERROR
+    HAS_ERROR = True
+    return LOG.error(BraceMessage(msg, *args, **kwargs))
+
+
+@public
+def log_exception(msg, *args, **kwargs):
+    global HAS_ERROR
+    HAS_ERROR = True
+    return LOG.exception(BraceMessage(msg, *args, **kwargs))
+
+
+@public
+def error_was_logged():
+    return HAS_ERROR

PC/layout/support/options.py

+"""
+List of optional components.
+"""
+
+__author__ = "Steve Dower <steve.dower@python.org>"
+__version__ = "3.8"
+
+
+__all__ = []
+
+
+def public(f):
+    __all__.append(f.__name__)
+    return f
+
+
+OPTIONS = {
+    "stable": {"help": "stable ABI stub"},
+    "pip": {"help": "pip"},
+    "distutils": {"help": "distutils"},
+    "tcltk": {"help": "Tcl, Tk and tkinter"},
+    "idle": {"help": "Idle"},
+    "tests": {"help": "test suite"},
+    "tools": {"help": "tools"},
+    "venv": {"help": "venv"},
+    "dev": {"help": "headers and libs"},
+    "symbols": {"help": "symbols"},
+    "bdist-wininst": {"help": "bdist_wininst support"},
+    "underpth": {"help": "a python._pth file", "not-in-all": True},
+    "launchers": {"help": "specific launchers"},
+    "appxmanifest": {"help": "an appxmanifest"},
+    "props": {"help": "a python.props file"},
+    "chm": {"help": "the CHM documentation"},
+    "html-doc": {"help": "the HTML documentation"},
+}
+
+
+PRESETS = {
+    "appx": {
+        "help": "APPX package",
+        "options": [
+            "stable",
+            "pip",
+            "distutils",
+            "tcltk",
+            "idle",
+            "venv",
+            "dev",
+            "launchers",
+            "appxmanifest",
+            # XXX: Disabled for now "precompile",
+        ],
+    },
+    "nuget": {
+        "help": "nuget package",
+        "options": ["stable", "pip", "distutils", "dev", "props"],
+    },
+    "default": {
+        "help": "development kit package",
+        "options": [
+            "stable",
+            "pip",
+            "distutils",
+            "tcltk",
+            "idle",
+            "tests",
+            "tools",
+            "venv",
+            "dev",
+            "symbols",
+            "bdist-wininst",
+            "chm",
+        ],
+    },
+    "embed": {
+        "help": "embeddable package",
+        "options": ["stable", "zip-lib", "flat-dlls", "underpth", "precompile"],
+    },
+}
+
+
+@public
+def get_argparse_options():
+    for opt, info in OPTIONS.items():
+        help = "When specified, includes {}".format(info["help"])
+        if info.get("not-in-all"):
+            help = "{}. Not affected by --include-all".format(help)
+
+        yield "--include-{}".format(opt), help
+
+    for opt, info in PRESETS.items():
+        help = "When specified, includes default options for {}".format(info["help"])
+        yield "--preset-{}".format(opt), help
+
+
+def ns_get(ns, key, default=False):
+    return getattr(ns, key.replace("-", "_"), default)
+
+
+def ns_set(ns, key, value=True):
+    k1 = key.replace("-", "_")
+    k2 = "include_{}".format(k1)
+    if hasattr(ns, k2):
+        setattr(ns, k2, value)
+    elif hasattr(ns, k1):
+        setattr(ns, k1, value)
+    else:
+        raise AttributeError("no argument named '{}'".format(k1))
+
+
+@public
+def update_presets(ns):
+    for preset, info in PRESETS.items():
+        if ns_get(ns, "preset-{}".format(preset)):
+            for opt in info["options"]:
+                ns_set(ns, opt)
+
+    if ns.include_all:
+        for opt in OPTIONS:
+            if OPTIONS[opt].get("not-in-all"):
+                continue
+            ns_set(ns, opt)

PC/layout/support/pip.py

+"""
+Extraction and file list generation for pip.
+"""
+
+__author__ = "Steve Dower <steve.dower@python.org>"
+__version__ = "3.8"
+
+
+import os
+import shutil
+import subprocess
+import sys
+
+__all__ = []
+
+
+def public(f):
+    __all__.append(f.__name__)
+    return f
+
+
+@public
+def get_pip_dir(ns):
+    if ns.copy:
+        if ns.zip_lib:
+            return ns.copy / "packages"
+        return ns.copy / "Lib" / "site-packages"
+    else:
+        return ns.temp / "packages"
+
+
+@public
+def extract_pip_files(ns):
+    dest = get_pip_dir(ns)
+    dest.mkdir(parents=True, exist_ok=True)
+
+    src = ns.source / "Lib" / "ensurepip" / "_bundled"
+
+    ns.temp.mkdir(parents=True, exist_ok=True)
+    wheels = [shutil.copy(whl, ns.temp) for whl in src.glob("*.whl")]
+    search_path = os.pathsep.join(wheels)
+    if os.environ.get("PYTHONPATH"):
+        search_path += ";" + os.environ["PYTHONPATH"]
+
+    env = os.environ.copy()
+    env["PYTHONPATH"] = search_path
+
+    output = subprocess.check_output(
+        [
+            sys.executable,
+            "-m",
+            "pip",
+            "--no-color",
+            "install",
+            "pip",
+            "setuptools",
+            "--upgrade",
+            "--target",
+            str(dest),
+            "--no-index",
+            "--no-cache-dir",
+            "-f",
+            str(src),
+            "--only-binary",
+            ":all:",
+        ],
+        env=env,
+    )
+
+    try:
+        shutil.rmtree(dest / "bin")
+    except OSError:
+        pass
+
+    for file in wheels:
+        try:
+            os.remove(file)
+        except OSError:
+            pass

PC/layout/support/props.py

+"""
+Provides .props file.
+"""
+
+import os
+
+from .constants import *
+
+__all__ = ["PYTHON_PROPS_NAME"]
+
+
+def public(f):
+    __all__.append(f.__name__)
+    return f
+
+
+PYTHON_PROPS_NAME = "python.props"
+
+PROPS_DATA = {
+    "PYTHON_TAG": VER_DOT,
+    "PYTHON_VERSION": os.getenv("PYTHON_NUSPEC_VERSION"),
+    "PYTHON_PLATFORM": os.getenv("PYTHON_PROPS_PLATFORM"),
+    "PYTHON_TARGET": "",
+}
+
+if not PROPS_DATA["PYTHON_VERSION"]:
+    if VER_NAME:
+        PROPS_DATA["PYTHON_VERSION"] = "{}.{}-{}{}".format(
+            VER_DOT, VER_MICRO, VER_NAME, VER_SERIAL
+        )
+    else:
+        PROPS_DATA["PYTHON_VERSION"] = "{}.{}".format(VER_DOT, VER_MICRO)
+
+if not PROPS_DATA["PYTHON_PLATFORM"]:
+    PROPS_DATA["PYTHON_PLATFORM"] = "x64" if IS_X64 else "Win32"
+
+PROPS_DATA["PYTHON_TARGET"] = "_GetPythonRuntimeFilesDependsOn{}{}_{}".format(
+    VER_MAJOR, VER_MINOR, PROPS_DATA["PYTHON_PLATFORM"]
+)
+
+PROPS_TEMPLATE = r"""<?xml version="1.0" encoding="utf-8"?>
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition="$(Platform) == '{PYTHON_PLATFORM}'">
+    <PythonHome Condition="$(Configuration) == 'Debug'">$([msbuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), "python_d.exe")</PythonHome>
+    <PythonHome Condition="$(PythonHome) == ''">$([msbuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), "python.exe")</PythonHome>
+    <PythonInclude>$(PythonHome)\include</PythonInclude>
+    <PythonLibs>$(PythonHome)\libs</PythonLibs>
+    <PythonTag>{PYTHON_TAG}</PythonTag>
+    <PythonVersion>{PYTHON_VERSION}</PythonVersion>
+
+    <IncludePythonExe Condition="$(IncludePythonExe) == ''">true</IncludePythonExe>
+    <IncludeDistutils Condition="$(IncludeDistutils) == ''">false</IncludeDistutils>
+    <IncludeLib2To3 Condition="$(IncludeLib2To3) == ''">false</IncludeLib2To3>
+    <IncludeVEnv Condition="$(IncludeVEnv) == ''">false</IncludeVEnv>
+
+    <GetPythonRuntimeFilesDependsOn>{PYTHON_TARGET};$(GetPythonRuntimeFilesDependsOn)</GetPythonRuntimeFilesDependsOn>
+  </PropertyGroup>
+
+  <ItemDefinitionGroup Condition="$(Platform) == '{PYTHON_PLATFORM}'">
+    <ClCompile>
+      <AdditionalIncludeDirectories>$(PythonInclude);%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
+    </ClCompile>
+    <Link>
+      <AdditionalLibraryDirectories>$(PythonLibs);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+    </Link>
+  </ItemDefinitionGroup>
+
+  <Target Name="GetPythonRuntimeFiles" Returns="@(PythonRuntime)" DependsOnTargets="$(GetPythonRuntimeFilesDependsOn)" />
+
+  <Target Name="{PYTHON_TARGET}" Returns="@(PythonRuntime)">
+    <ItemGroup>
+      <_PythonRuntimeExe Include="$(PythonHome)\python*.dll" />
+      <_PythonRuntimeExe Include="$(PythonHome)\python*.exe" Condition="$(IncludePythonExe) == 'true'" />
+      <_PythonRuntimeExe>
+        <Link>%(Filename)%(Extension)</Link>
+      </_PythonRuntimeExe>
+      <_PythonRuntimeDlls Include="$(PythonHome)\DLLs\*.pyd" />
+      <_PythonRuntimeDlls Include="$(PythonHome)\DLLs\*.dll" />
+      <_PythonRuntimeDlls>
+        <Link>DLLs\%(Filename)%(Extension)</Link>
+      </_PythonRuntimeDlls>
+      <_PythonRuntimeLib Include="$(PythonHome)\Lib\**\*" Exclude="$(PythonHome)\Lib\**\*.pyc;$(PythonHome)\Lib\site-packages\**\*" />
+      <_PythonRuntimeLib Remove="$(PythonHome)\Lib\distutils\**\*" Condition="$(IncludeDistutils) != 'true'" />
+      <_PythonRuntimeLib Remove="$(PythonHome)\Lib\lib2to3\**\*" Condition="$(IncludeLib2To3) != 'true'" />
+      <_PythonRuntimeLib Remove="$(PythonHome)\Lib\ensurepip\**\*" Condition="$(IncludeVEnv) != 'true'" />
+      <_PythonRuntimeLib Remove="$(PythonHome)\Lib\venv\**\*" Condition="$(IncludeVEnv) != 'true'" />
+      <_PythonRuntimeLib>
+        <Link>Lib\%(RecursiveDir)%(Filename)%(Extension)</Link>
+      </_PythonRuntimeLib>
+      <PythonRuntime Include="@(_PythonRuntimeExe);@(_PythonRuntimeDlls);@(_PythonRuntimeLib)" />
+    </ItemGroup>
+
+    <Message Importance="low" Text="Collected Python runtime from $(PythonHome):%0D%0A@(PythonRuntime->'  %(Link)','%0D%0A')" />
+  </Target>
+</Project>
+"""
+
+
+@public
+def get_props_layout(ns):
+    if ns.include_all or ns.include_props:
+        yield "python.props", ns.temp / "python.props"
+
+
+@public
+def get_props(ns):
+    # TODO: Filter contents of props file according to included/excluded items
+    props = PROPS_TEMPLATE.format_map(PROPS_DATA)
+    return props.encode("utf-8")

PC/pylauncher.rc

@@ -7,6 +7,11 @@
 #include <winuser.h>
 1 RT_MANIFEST "python.manifest"
 
+#if defined(PY_ICON)
+1 ICON DISCARDABLE "icons\python.ico"
+#elif defined(PYW_ICON)
+1 ICON DISCARDABLE "icons\pythonw.ico"
+#else
 1 ICON DISCARDABLE "icons\launcher.ico" 
 2 ICON DISCARDABLE "icons\py.ico" 
 3 ICON DISCARDABLE "icons\pyc.ico" 
@@ -14,6 +19,7 @@
 5 ICON DISCARDABLE "icons\python.ico"
 6 ICON DISCARDABLE "icons\pythonw.ico"
 7 ICON DISCARDABLE "icons\setup.ico" 
+#endif
 
 /////////////////////////////////////////////////////////////////////////////
 //

PC/python_uwp.cpp

+/* Main program when embedded in a UWP application on Windows */
+
+#include "Python.h"
+#include <string.h>
+
+#define WIN32_LEAN_AND_MEAN
+#include <Windows.h>
+#include <shellapi.h>
+#include <winrt\Windows.ApplicationModel.h>
+#include <winrt\Windows.Storage.h>
+
+#ifdef PYTHONW
+#ifdef _DEBUG
+const wchar_t *PROGNAME = L"pythonw_d.exe";
+#else
+const wchar_t *PROGNAME = L"pythonw.exe";
+#endif
+#else
+#ifdef _DEBUG
+const wchar_t *PROGNAME = L"python_d.exe";
+#else
+const wchar_t *PROGNAME = L"python.exe";
+#endif
+#endif
+
+static void
+set_user_base()
+{
+    wchar_t envBuffer[2048];
+    try {
+        const auto appData = winrt::Windows::Storage::ApplicationData::Current();
+        if (appData) {
+            const auto localCache = appData.LocalCacheFolder();
+            if (localCache) {
+                auto path = localCache.Path();
+                if (!path.empty() &&
+                    !wcscpy_s(envBuffer, path.c_str()) &&
+                    !wcscat_s(envBuffer, L"\\local-packages")
+                ) {
+                    _wputenv_s(L"PYTHONUSERBASE", envBuffer);
+                }
+            }
+        }
+    } catch (...) {
+    }
+}
+
+static const wchar_t *
+get_argv0(const wchar_t *argv0)
+{
+    winrt::hstring installPath;
+    const wchar_t *launcherPath;
+    wchar_t *buffer;
+    size_t len;
+
+    launcherPath = _wgetenv(L"__PYVENV_LAUNCHER__");
+    if (launcherPath && launcherPath[0]) {
+        len = wcslen(launcherPath) + 1;
+        buffer = (wchar_t *)malloc(sizeof(wchar_t) * len);
+        if (!buffer) {
+            Py_FatalError("out of memory");
+            return NULL;
+        }
+        if (wcscpy_s(buffer, len, launcherPath)) {
+            Py_FatalError("failed to copy to buffer");
+            return NULL;
+        }
+        return buffer;
+    }
+
+    try {
+        const auto package = winrt::Windows::ApplicationModel::Package::Current();
+        if (package) {
+            const auto install = package.InstalledLocation();
+            if (install) {
+                installPath = install.Path();
+            }
+        }
+    }
+    catch (...) {
+    }
+
+    if (!installPath.empty()) {
+        len = installPath.size() + wcslen(PROGNAME) + 2;
+    } else {
+        len = wcslen(argv0) + wcslen(PROGNAME) + 1;
+    }
+
+    buffer = (wchar_t *)malloc(sizeof(wchar_t) * len);
+    if (!buffer) {
+        Py_FatalError("out of memory");
+        return NULL;
+    }
+
+    if (!installPath.empty()) {
+        if (wcscpy_s(buffer, len, installPath.c_str())) {
+            Py_FatalError("failed to copy to buffer");
+            return NULL;
+        }
+        if (wcscat_s(buffer, len, L"\\")) {
+            Py_FatalError("failed to concatenate backslash");
+            return NULL;
+        }
+    } else {
+        if (wcscpy_s(buffer, len, argv0)) {
+            Py_FatalError("failed to copy argv[0]");
+            return NULL;
+        }
+
+        wchar_t *name = wcsrchr(buffer, L'\\');
+        if (name) {
+            name[1] = L'\0';
+        } else {
+            buffer[0] = L'\0';
+        }
+    }
+
+    if (wcscat_s(buffer, len, PROGNAME)) {
+        Py_FatalError("failed to concatenate program name");
+        return NULL;
+    }
+
+    return buffer;
+}
+
+static wchar_t *
+get_process_name()
+{
+    DWORD bufferLen = MAX_PATH;
+    DWORD len = bufferLen;
+    wchar_t *r = NULL;
+
+    while (!r) {
+        r = (wchar_t *)malloc(bufferLen * sizeof(wchar_t));
+        if (!r) {
+            Py_FatalError("out of memory");
+            return NULL;
+        }
+        len = GetModuleFileNameW(NULL, r, bufferLen);
+        if (len == 0) {
+            free((void *)r);
+            return NULL;
+        } else if (len == bufferLen &&
+                   GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
+            free(r);
+            r = NULL;
+            bufferLen *= 2;
+        }
+    }
+
+    return r;
+}
+
+int
+wmain(int argc, wchar_t **argv)
+{
+    const wchar_t **new_argv;
+    int new_argc;
+    const wchar_t *exeName;
+
+    new_argc = argc;
+    new_argv = (const wchar_t**)malloc(sizeof(wchar_t *) * (argc + 2));
+    if (new_argv == NULL) {
+        Py_FatalError("out of memory");
+        return -1;
+    }
+
+    exeName = get_process_name();
+
+    new_argv[0] = get_argv0(exeName ? exeName : argv[0]);
+    for (int i = 1; i < argc; ++i) {
+        new_argv[i] = argv[i];
+    }
+
+    set_user_base();
+
+    if (exeName) {
+        const wchar_t *p = wcsrchr(exeName, L'\\');
+        if (p) {
+            const wchar_t *moduleName = NULL;
+            if (*p++ == L'\\') {
+                if (wcsnicmp(p, L"pip", 3) == 0) {
+                    moduleName = L"pip";
+                    _wputenv_s(L"PIP_USER", L"true");
+                }
+                else if (wcsnicmp(p, L"idle", 4) == 0) {
+                    moduleName = L"idlelib";
+                }
+            }
+
+            if (moduleName) {
+                new_argc += 2;
+                for (int i = argc; i >= 1; --i) {
+                    new_argv[i + 2] = new_argv[i];
+                }
+                new_argv[1] = L"-m";
+                new_argv[2] = moduleName;
+            }
+        }
+    }
+
+    /* Override program_full_path from here so that
+       sys.executable is set correctly. */
+    _Py_SetProgramFullPath(new_argv[0]);
+
+    int result = Py_Main(new_argc, (wchar_t **)new_argv);
+
+    free((void *)exeName);
+    free((void *)new_argv);
+
+    return result;
+}
+
+#ifdef PYTHONW
+
+int WINAPI wWinMain(
+    HINSTANCE hInstance,      /* handle to current instance */
+    HINSTANCE hPrevInstance,  /* handle to previous instance */
+    LPWSTR lpCmdLine,         /* pointer to command line */
+    int nCmdShow              /* show state of window */
+)
+{
+    return wmain(__argc, __wargv);
+}
+
+#endif

PC/store_info.txt

+# Overview
+
+NOTE: This file requires more content.
+
+Since Python 3.8.2, releases have been made through the Microsoft Store
+to allow easy installation on Windows 10.0.17763.0 and later.
+
+# Building
+
+To build the store package, the PC/layout script should be used.
+Execute the directory with the build of Python to package, and pass
+"-h" for full command-line options.
+
+To sideload test builds, you will need a local certificate.
+Instructions are available at
+https://docs.microsoft.com/windows/uwp/packaging/create-certificate-package-signing.
+
+After exporting your certificate, you will need the subject name and
+SHA256 hash. The `certutil -dump <cert file>` command will display this
+information.
+
+To build for sideloading, use these commands in PowerShell:
+
+```
+$env:APPX_DATA_PUBLISHER=<your certificate subject name>
+$env:APPX_DATA_SHA256=<your certificate SHA256>
+$env:SigningCertificateFile=<your certificate file>
+
+python PC/layout --copy <layout directory> --include-appxmanifest
+Tools/msi/make_appx.ps1 <layout directory> python.msix -sign
+
+Add-AppxPackage python.msix
+```
+
+(Note that only the last command requires PowerShell, and the others
+can be used from Command Prompt. You can also double-click to install
+the final package.)
+
+To build for publishing to the Store, use these commands:
+
+```
+$env:APPX_DATA_PUBLISHER = $null
+$env:APPX_DATA_SHA256 = $null
+
+python PC/layout --copy <layout directory> --preset-appxmanifest --precompile
+Tools/msi/make_appx.ps1 <layout directory> python.msix
+```
+
+Note that this package cannot be installed locally. It may only be
+added to a submission for the store.
+
+
+# Submission Metadata
+
+This file contains the text that we use to fill out the store listing
+for the Microsoft Store. It needs to be entered manually when creating
+a new submission via the dashboard at
+https://partner.microsoft.com/dashboard.
+
+We keep it here for convenience and to allow it to be updated via pull
+requests.
+
+## Title
+
+Python 3.8
+
+## Short Title
+
+Python
+
+## Description
+
+Python is an easy to learn, powerful programming language. It has efficient high-level data structures and a simple but effective approach to object-oriented programming. Python’s elegant syntax and dynamic typing, together with its interpreted nature, make it an ideal language for scripting and rapid application development in many areas on most platforms.
+
+The Python interpreter and the extensive standard library are freely available in source or binary form for all major platforms from the Python Web site, https://www.python.org/, and may be freely distributed. The same site also contains distributions of and pointers to many free third party Python modules, programs and tools, and additional documentation.
+
+The Python interpreter is easily extended with new functions and data types implemented in C or C++ (or other languages callable from C). Python is also suitable as an extension language for customizable applications.
+
+## ShortDescription
+
+The Python 3.8 interpreter and runtime.
+
+## Copyright Trademark Information
+
+(c) Python Software Foundation
+
+## Additional License Terms
+
+Visit https://docs.python.org/3.8/license.html for latest license terms.
+
+PSF LICENSE AGREEMENT FOR PYTHON 3.8
+
+1. This LICENSE AGREEMENT is between the Python Software Foundation ("PSF"), and
+   the Individual or Organization ("Licensee") accessing and otherwise using Python
+   3.8 software in source or binary form and its associated documentation.
+
+2. Subject to the terms and conditions of this License Agreement, PSF hereby
+   grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
+   analyze, test, perform and/or display publicly, prepare derivative works,
+   distribute, and otherwise use Python 3.8 alone or in any derivative
+   version, provided, however, that PSF's License Agreement and PSF's notice of
+   copyright, i.e., "Copyright © 2001-2018 Python Software Foundation; All Rights
+   Reserved" are retained in Python 3.8 alone or in any derivative version
+   prepared by Licensee.
+
+3. In the event Licensee prepares a derivative work that is based on or
+   incorporates Python 3.8 or any part thereof, and wants to make the
+   derivative work available to others as provided herein, then Licensee hereby
+   agrees to include in any such work a brief summary of the changes made to Python
+   3.8.
+
+4. PSF is making Python 3.8 available to Licensee on an "AS IS" basis.
+   PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED.  BY WAY OF
+   EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND DISCLAIMS ANY REPRESENTATION OR
+   WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE
+   USE OF PYTHON 3.8 WILL NOT INFRINGE ANY THIRD PARTY RIGHTS.
+
+5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON 3.8
+   FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS A RESULT OF
+   MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 3.8, OR ANY DERIVATIVE
+   THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
+
+6. This License Agreement will automatically terminate upon a material breach of
+   its terms and conditions.
+
+7. Nothing in this License Agreement shall be deemed to create any relationship
+   of agency, partnership, or joint venture between PSF and Licensee.  This License
+   Agreement does not grant permission to use PSF trademarks or trade name in a
+   trademark sense to endorse or promote products or services of Licensee, or any
+   third party.
+
+8. By copying, installing or otherwise using Python 3.8, Licensee agrees
+   to be bound by the terms and conditions of this License Agreement.
+
+## Features
+
+* Easy to install Python runtime
+* Supported by core CPython team
+* Find Python, Pip and Idle on PATH
+
+## Search Terms
+
+* Python
+* Scripting
+* Interpreter
+

PCbuild/_tkinter.vcxproj

@@ -95,4 +95,10 @@
   <Target Name="_CleanTclTkDLL" BeforeTargets="Clean">
     <Delete Files="@(_TclTkDLL->'$(OutDir)%(Filename)%(Extension)')" />
   </Target>
+  <Target Name="_WriteTCL_LIBRARY" Outputs="$(OutDir)TCL_LIBRARY.env" AfterTargets="Build">
+    <WriteLinesToFile File="$(OutDir)TCL_LIBRARY.env" Lines="$(tcltkdir)\lib\tcl$(TclMajorVersion).$(TclMinorVersion)" Encoding="utf-8" Overwrite="true" />
+  </Target>
+  <Target Name="_CleanTCL_LIBRARY" BeforeTargets="Clean">
+    <Delete Files="$(OutDir)TCL_LIBRARY.env" />
+  </Target>
 </Project>
\ No newline at end of file

PCbuild/find_msbuild.bat

@@ -29,6 +29,16 @@
 @where msbuild > "%TEMP%\msbuild.loc" 2> nul && set /P MSBUILD= < "%TEMP%\msbuild.loc" & del "%TEMP%\msbuild.loc"
 @if exist "%MSBUILD%" set MSBUILD="%MSBUILD%" & (set _Py_MSBuild_Source=PATH) & goto :found
 
+@rem VS 2017 and later provide vswhere.exe, which can be used
+@if not exist "%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe" goto :skip_vswhere
+@set _Py_MSBuild_Root=
+@for /F "tokens=*" %%i in ('"%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe" -property installationPath -latest') DO @(set _Py_MSBuild_Root=%%i\MSBuild)
+@if not defined _Py_MSBuild_Root goto :skip_vswhere
+@for %%j in (Current 15.0) DO @if exist "%_Py_MSBuild_Root%\%%j\Bin\msbuild.exe" (set MSBUILD="%_Py_MSBuild_Root%\%%j\Bin\msbuild.exe")
+@set _Py_MSBuild_Root=
+@if defined MSBUILD @if exist %MSBUILD% (set _Py_MSBuild_Source=Visual Studio installation) & goto :found
+:skip_vswhere
+
 @rem VS 2017 sets exactly one install as the "main" install, so we may find MSBuild in there.
 @reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\SxS\VS7" /v 15.0 /reg:32 >nul 2>nul
 @if NOT ERRORLEVEL 1 @for /F "tokens=1,2*" %%i in ('reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\VisualStudio\SxS\VS7" /v 15.0 /reg:32') DO @(

PCbuild/pcbuild.proj

@@ -52,6 +52,8 @@
     <ExtensionModules Include="_asyncio;_contextvars;_ctypes;_decimal;_elementtree;_msi;_multiprocessing;_overlapped;pyexpat;_queue;select;unicodedata;winsound" />
     <!-- Extension modules that require external sources -->
     <ExternalModules Include="_bz2;_lzma;_sqlite3" />
+    <!-- venv launchers -->
+    <Projects Include="venvlauncher.vcxproj;venvwlauncher.vcxproj" />
     <!-- _ssl will build _socket as well, which may cause conflicts in parallel builds -->
     <ExtensionModules Include="_socket" Condition="!$(IncludeSSL) or !$(IncludeExternals)" />
     <ExternalModules Include="_ssl;_hashlib" Condition="$(IncludeSSL)" />
@@ -70,6 +72,7 @@
     <Projects2 Include="_freeze_importlib.vcxproj" />
     <!-- python[w].exe -->
     <Projects2 Include="python.vcxproj;pythonw.vcxproj" />
+    <Projects2 Include="python_uwp.vcxproj;pythonw_uwp.vcxproj" />
   </ItemGroup>
 
   <Target Name="Build">

PCbuild/pcbuild.sln

@@ -93,6 +93,14 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "_queue", "_queue.vcxproj",
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "liblzma", "liblzma.vcxproj", "{12728250-16EC-4DC6-94D7-E21DD88947F8}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "python_uwp", "python_uwp.vcxproj", "{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "venvlauncher", "venvlauncher.vcxproj", "{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "venvwlauncher", "venvwlauncher.vcxproj", "{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "pythonw_uwp", "pythonw_uwp.vcxproj", "{AB603547-1E2A-45B3-9E09-B04596006393}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -693,6 +701,70 @@ Global
 		{12728250-16EC-4DC6-94D7-E21DD88947F8}.Release|Win32.Build.0 = Release|Win32
 		{12728250-16EC-4DC6-94D7-E21DD88947F8}.Release|x64.ActiveCfg = Release|x64
 		{12728250-16EC-4DC6-94D7-E21DD88947F8}.Release|x64.Build.0 = Release|x64
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.Debug|Win32.ActiveCfg = Debug|Win32
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.Debug|Win32.Build.0 = Debug|Win32
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.Debug|x64.ActiveCfg = Debug|x64
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.Debug|x64.Build.0 = Debug|x64
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.PGInstrument|Win32.ActiveCfg = PGInstrument|Win32
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.PGInstrument|Win32.Build.0 = PGInstrument|Win32
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.PGInstrument|x64.ActiveCfg = PGInstrument|x64
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.PGInstrument|x64.Build.0 = PGInstrument|x64
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.PGUpdate|Win32.ActiveCfg = PGUpdate|Win32
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.PGUpdate|Win32.Build.0 = PGUpdate|Win32
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.PGUpdate|x64.ActiveCfg = PGUpdate|x64
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.PGUpdate|x64.Build.0 = PGUpdate|x64
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.Release|Win32.ActiveCfg = Release|Win32
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.Release|Win32.Build.0 = Release|Win32
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.Release|x64.ActiveCfg = Release|x64
+		{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}.Release|x64.Build.0 = Release|x64
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.Debug|Win32.ActiveCfg = Debug|Win32
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.Debug|Win32.Build.0 = Debug|Win32
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.Debug|x64.ActiveCfg = Debug|x64
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.Debug|x64.Build.0 = Debug|x64
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.PGInstrument|Win32.ActiveCfg = PGInstrument|Win32
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.PGInstrument|Win32.Build.0 = PGInstrument|Win32
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.PGInstrument|x64.ActiveCfg = PGInstrument|x64
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.PGInstrument|x64.Build.0 = PGInstrument|x64
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.PGUpdate|Win32.ActiveCfg = PGUpdate|Win32
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.PGUpdate|Win32.Build.0 = PGUpdate|Win32
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.PGUpdate|x64.ActiveCfg = PGUpdate|x64
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.PGUpdate|x64.Build.0 = PGUpdate|x64
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.Release|Win32.ActiveCfg = Release|Win32
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.Release|Win32.Build.0 = Release|Win32
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.Release|x64.ActiveCfg = Release|x64
+		{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}.Release|x64.Build.0 = Release|x64
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.Debug|Win32.ActiveCfg = Debug|Win32
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.Debug|Win32.Build.0 = Debug|Win32
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.Debug|x64.ActiveCfg = Debug|x64
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.Debug|x64.Build.0 = Debug|x64
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.PGInstrument|Win32.ActiveCfg = PGInstrument|Win32
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.PGInstrument|Win32.Build.0 = PGInstrument|Win32
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.PGInstrument|x64.ActiveCfg = PGInstrument|x64
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.PGInstrument|x64.Build.0 = PGInstrument|x64
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.PGUpdate|Win32.ActiveCfg = PGUpdate|Win32
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.PGUpdate|Win32.Build.0 = PGUpdate|Win32
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.PGUpdate|x64.ActiveCfg = PGUpdate|x64
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.PGUpdate|x64.Build.0 = PGUpdate|x64
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.Release|Win32.ActiveCfg = Release|Win32
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.Release|Win32.Build.0 = Release|Win32
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.Release|x64.ActiveCfg = Release|x64
+		{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}.Release|x64.Build.0 = Release|x64
+		{AB603547-1E2A-45B3-9E09-B04596006393}.Debug|Win32.ActiveCfg = Debug|Win32
+		{AB603547-1E2A-45B3-9E09-B04596006393}.Debug|Win32.Build.0 = Debug|Win32
+		{AB603547-1E2A-45B3-9E09-B04596006393}.Debug|x64.ActiveCfg = Debug|x64
+		{AB603547-1E2A-45B3-9E09-B04596006393}.Debug|x64.Build.0 = Debug|x64
+		{AB603547-1E2A-45B3-9E09-B04596006393}.PGInstrument|Win32.ActiveCfg = PGInstrument|Win32
+		{AB603547-1E2A-45B3-9E09-B04596006393}.PGInstrument|Win32.Build.0 = PGInstrument|Win32
+		{AB603547-1E2A-45B3-9E09-B04596006393}.PGInstrument|x64.ActiveCfg = PGInstrument|x64
+		{AB603547-1E2A-45B3-9E09-B04596006393}.PGInstrument|x64.Build.0 = PGInstrument|x64
+		{AB603547-1E2A-45B3-9E09-B04596006393}.PGUpdate|Win32.ActiveCfg = PGUpdate|Win32
+		{AB603547-1E2A-45B3-9E09-B04596006393}.PGUpdate|Win32.Build.0 = PGUpdate|Win32
+		{AB603547-1E2A-45B3-9E09-B04596006393}.PGUpdate|x64.ActiveCfg = PGUpdate|x64
+		{AB603547-1E2A-45B3-9E09-B04596006393}.PGUpdate|x64.Build.0 = PGUpdate|x64
+		{AB603547-1E2A-45B3-9E09-B04596006393}.Release|Win32.ActiveCfg = Release|Win32
+		{AB603547-1E2A-45B3-9E09-B04596006393}.Release|Win32.Build.0 = Release|Win32
+		{AB603547-1E2A-45B3-9E09-B04596006393}.Release|x64.ActiveCfg = Release|x64
+		{AB603547-1E2A-45B3-9E09-B04596006393}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

PCbuild/python.props

@@ -77,7 +77,8 @@
     -->
     <_RegistryVersion>$(Registry:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v10.0@ProductVersion)</_RegistryVersion>
     <_RegistryVersion Condition="$(_RegistryVersion) == ''">$(Registry:HKEY_LOCAL_MACHINE\WOW6432Node\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v10.0@ProductVersion)</_RegistryVersion>
-    <DefaultWindowsSDKVersion>10.0.17134.0</DefaultWindowsSDKVersion>
+    <DefaultWindowsSDKVersion>10.0.17763.0</DefaultWindowsSDKVersion>
+    <DefaultWindowsSDKVersion Condition="$(_RegistryVersion) == '10.0.17134'">10.0.17134.0</DefaultWindowsSDKVersion>
     <DefaultWindowsSDKVersion Condition="$(_RegistryVersion) == '10.0.16299'">10.0.16299.0</DefaultWindowsSDKVersion>
     <DefaultWindowsSDKVersion Condition="$(_RegistryVersion) == '10.0.15063'">10.0.15063.0</DefaultWindowsSDKVersion>
     <DefaultWindowsSDKVersion Condition="$(_RegistryVersion) == '10.0.14393'">10.0.14393.0</DefaultWindowsSDKVersion>

PCbuild/python_uwp.vcxproj

+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|Win32">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|x64">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|Win32">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|x64">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{9DE9E23D-C8D4-4817-92A9-920A8B1FE5FF}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="python.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="pyproject.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+  </PropertyGroup>
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalOptions>/EHsc /std:c++17 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+    <Link>
+      <AdditionalDependencies>windowsapp.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <SubSystem>Console</SubSystem>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <None Include="..\PC\pycon.ico" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="..\PC\python_exe.rc" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\PC\python_uwp.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="pythoncore.vcxproj">
+      <Project>{cf7ac3d1-e2df-41d2-bea6-1e2556cdea26}</Project>
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

PCbuild/pythoncore.vcxproj

@@ -479,4 +479,19 @@
   <Target Name="_WarnAboutZlib" BeforeTargets="PrepareForBuild" Condition="!$(IncludeExternals)">
     <Warning Text="Not including zlib is not a supported configuration." />
   </Target>
+
+  <PropertyGroup>
+    <VCRedistDir>$(VCInstallDir)\Redist\MSVC\$(VCToolsRedistVersion)\</VCRedistDir>
+    <VCRedistDir Condition="$(Platform) == 'Win32'">$(VCRedistDir)x86\</VCRedistDir>
+    <VCRedistDir Condition="$(Platform) != 'Win32'">$(VCRedistDir)$(Platform)\</VCRedistDir>
+  </PropertyGroup>
+  <ItemGroup Condition="$(VCInstallDir) != ''">
+    <VCRuntimeDLL Include="$(VCRedistDir)\**\vcruntime*.dll" />
+  </ItemGroup>
+  <Target Name="_CopyVCRuntime" AfterTargets="Build" Inputs="@(VCRuntimeDLL)" Outputs="$(OutDir)%(Filename)%(Extension)">
+    <Copy SourceFiles="%(VCRuntimeDLL.FullPath)" DestinationFolder="$(OutDir)" />
+  </Target>
+  <Target Name="_CleanVCRuntime" AfterTargets="Clean">
+    <Delete Files="@(VCRuntimeDLL->'$(OutDir)%(Filename)%(Extension)')" />
+  </Target>
 </Project>

PCbuild/pythonw_uwp.vcxproj

+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|Win32">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|x64">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|Win32">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|x64">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{AB603547-1E2A-45B3-9E09-B04596006393}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="python.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseOfMfc>false</UseOfMfc>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="pyproject.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <_ProjectFileVersion>10.0.30319.1</_ProjectFileVersion>
+  </PropertyGroup>
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <PreprocessorDefinitions>PYTHONW;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalOptions>/EHsc /std:c++17 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+    <Link>
+      <AdditionalDependencies>windowsapp.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <SubSystem>Windows</SubSystem>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <None Include="..\PC\pyconw.ico" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="..\PC\pythonw_exe.rc" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\PC\python_uwp.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="pythoncore.vcxproj">
+      <Project>{cf7ac3d1-e2df-41d2-bea6-1e2556cdea26}</Project>
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

PCbuild/venvlauncher.vcxproj

+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|Win32">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|x64">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|Win32">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|x64">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{494BAC80-A60C-43A9-99E7-ACB691CE2C4D}</ProjectGuid>
+    <RootNamespace>venvlauncher</RootNamespace>
+    <TargetName>venvlauncher</TargetName>
+    <SupportPGO>false</SupportPGO>
+  </PropertyGroup>
+  <Import Project="python.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <PropertyGroup>
+    <MakeVersionInfoBeforeTarget>ClCompile</MakeVersionInfoBeforeTarget>
+  </PropertyGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="pyproject.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <PreprocessorDefinitions>_CONSOLE;VENV_REDIRECT;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <ResourceCompile>
+      <PreprocessorDefinitions>PY_ICON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ResourceCompile>
+    <Link>
+      <AdditionalDependencies>version.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <SubSystem>Console</SubSystem>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\PC\launcher.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="..\PC\launcher.ico" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="..\PC\pylauncher.rc" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

PCbuild/venvwlauncher.vcxproj

+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|Win32">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGInstrument|x64">
+      <Configuration>PGInstrument</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|Win32">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="PGUpdate|x64">
+      <Configuration>PGUpdate</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{FDB84CBB-2FB6-47C8-A2D6-091E0833239D}</ProjectGuid>
+    <RootNamespace>venvwlauncher</RootNamespace>
+    <TargetName>venvwlauncher</TargetName>
+    <SupportPGO>false</SupportPGO>
+  </PropertyGroup>
+  <Import Project="python.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <PropertyGroup>
+    <MakeVersionInfoBeforeTarget>ClCompile</MakeVersionInfoBeforeTarget>
+  </PropertyGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="pyproject.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <PreprocessorDefinitions>_WINDOWS;VENV_REDIRECT;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
+    </ClCompile>
+    <ResourceCompile>
+      <PreprocessorDefinitions>PYW_ICON;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ResourceCompile>
+    <Link>
+      <AdditionalDependencies>version.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <SubSystem>Windows</SubSystem>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\PC\launcher.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="..\PC\launcher.ico" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="..\PC\pylauncher.rc" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

Tools/msi/buildrelease.bat

@@ -37,6 +37,7 @@ set BUILDX64=
 set TARGET=Rebuild
 set TESTTARGETDIR=
 set PGO=-m test -q --pgo
+set BUILDMSI=1
 set BUILDNUGET=1
 set BUILDZIP=1
 
@@ -61,6 +62,7 @@ if "%1" EQU "--pgo" (set PGO=%~2) && shift && shift && goto CheckOpts
 if "%1" EQU "--skip-pgo" (set PGO=) && shift && goto CheckOpts
 if "%1" EQU "--skip-nuget" (set BUILDNUGET=) && shift && goto CheckOpts
 if "%1" EQU "--skip-zip" (set BUILDZIP=) && shift && goto CheckOpts
+if "%1" EQU "--skip-msi" (set BUILDMSI=) && shift && goto CheckOpts
 
 if "%1" NEQ "" echo Invalid option: "%1" && exit /B 1
 
@@ -174,10 +176,12 @@ if "%OUTDIR_PLAT%" EQU "win32" (
 )
 
 set BUILDOPTS=/p:Platform=%1 /p:BuildForRelease=true /p:DownloadUrl=%DOWNLOAD_URL% /p:DownloadUrlBase=%DOWNLOAD_URL_BASE% /p:ReleaseUri=%RELEASE_URI%
-%MSBUILD% "%D%bundle\releaselocal.wixproj" /t:Rebuild %BUILDOPTS% %CERTOPTS% /p:RebuildAll=true
-if errorlevel 1 exit /B
-%MSBUILD% "%D%bundle\releaseweb.wixproj" /t:Rebuild %BUILDOPTS% %CERTOPTS% /p:RebuildAll=false
-if errorlevel 1 exit /B
+if defined BUILDMSI (
+    %MSBUILD% "%D%bundle\releaselocal.wixproj" /t:Rebuild %BUILDOPTS% %CERTOPTS% /p:RebuildAll=true
+    if errorlevel 1 exit /B
+    %MSBUILD% "%D%bundle\releaseweb.wixproj" /t:Rebuild %BUILDOPTS% %CERTOPTS% /p:RebuildAll=false
+    if errorlevel 1 exit /B
+)
 
 if defined BUILDZIP (
     %MSBUILD% "%D%make_zip.proj" /t:Build %BUILDOPTS% %CERTOPTS% /p:OutputPath="%BUILD%en-us"
@@ -214,6 +218,7 @@ echo    --skip-build (-B)   Do not build Python (just do the installers)
 echo    --skip-doc (-D)     Do not build documentation
 echo    --pgo               Specify PGO command for x64 installers
 echo    --skip-pgo          Build x64 installers without using PGO
+echo    --skip-msi          Do not build executable/MSI packages
 echo    --skip-nuget        Do not build Nuget packages
 echo    --skip-zip          Do not build embeddable package
 echo    --download          Specify the full download URL for MSIs

Tools/msi/make_appx.ps1

+<#
+.Synopsis
+    Compiles and signs an APPX package
+.Description
+    Given the file listing, ensures all the contents are signed
+    and builds and signs the final package.
+.Parameter mapfile
+    The location on disk of the text mapping file.
+.Parameter msix
+    The path and name to store the APPX/MSIX.
+.Parameter sign
+    When set, signs the APPX/MSIX. Packages to be published to
+    the store should not be signed. 
+.Parameter description
+    Description to embed in the signature (optional).
+.Parameter certname
+    The name of the certificate to sign with (optional).
+.Parameter certsha1
+    The SHA1 hash of the certificate to sign with (optional).
+#>
+param(
+    [Parameter(Mandatory=$true)][string]$layout,
+    [Parameter(Mandatory=$true)][string]$msix,
+    [switch]$sign,
+    [string]$description,
+    [string]$certname,
+    [string]$certsha1,
+    [string]$certfile
+)
+
+$tools = $script:MyInvocation.MyCommand.Path | Split-Path -parent;
+Import-Module $tools\sdktools.psm1 -WarningAction SilentlyContinue -Force
+
+Set-Alias makeappx (Find-Tool "makeappx.exe") -Scope Script
+Set-Alias makepri (Find-Tool "makepri.exe") -Scope Script
+
+$msixdir = Split-Path $msix -Parent
+if ($msixdir) {
+    $msixdir = (mkdir -Force $msixdir).FullName
+} else {
+    $msixdir = Get-Location
+}
+$msix = Join-Path $msixdir (Split-Path $msix -Leaf)
+
+pushd $layout
+try {
+    if (Test-Path resources.pri) {
+        del resources.pri
+    }
+    $name = ([xml](gc AppxManifest.xml)).Package.Identity.Name
+    makepri new /pr . /mn AppxManifest.xml /in $name /cf _resources.xml /of _resources.pri /mf appx /o
+    if (-not $? -or -not (Test-Path _resources.map.txt)) {
+        throw "makepri step failed"
+    }
+    $lines = gc _resources.map.txt
+    $lines | ?{ -not ($_ -match '"_resources[\w\.]+?"') } | Out-File _resources.map.txt -Encoding utf8
+    makeappx pack /f _resources.map.txt /m AppxManifest.xml /o /p $msix
+    if (-not $?) {
+        throw "makeappx step failed"
+    }
+} finally {
+    popd
+}
+
+if ($sign) {
+    Sign-File -certname $certname -certsha1 $certsha1 -certfile $certfile -description $description -files $msix
+
+    if (-not $?) {
+        throw "Package signing failed"
+    }
+}

Tools/msi/make_cat.ps1

+<#
+.Synopsis
+    Compiles and signs a catalog file.
+.Description
+    Given the CDF definition file, builds and signs a catalog.
+.Parameter catalog
+    The path to the catalog definition file to compile and
+    sign. It is assumed that the .cat file will be the same
+    name with a new extension.
+.Parameter description
+    The description to add to the signature (optional).
+.Parameter certname
+    The name of the certificate to sign with (optional).
+.Parameter certsha1
+    The SHA1 hash of the certificate to sign with (optional).
+#>
+param(
+    [Parameter(Mandatory=$true)][string]$catalog,
+    [string]$description,
+    [string]$certname,
+    [string]$certsha1,
+    [string]$certfile
+)
+
+$tools = $script:MyInvocation.MyCommand.Path | Split-Path -parent;
+Import-Module $tools\sdktools.psm1 -WarningAction SilentlyContinue -Force
+
+Set-Alias MakeCat (Find-Tool "makecat.exe") -Scope Script
+
+MakeCat $catalog
+if (-not $?) {
+    throw "Catalog compilation failed"
+}
+Sign-File -certname $certname -certsha1 $certsha1 -certfile $certfile -description $description -files @($catalog -replace 'cdf$', 'cat')

Tools/msi/make_zip.proj

@@ -15,11 +15,12 @@
         <TargetExt>.zip</TargetExt>
         <TargetPath>$(OutputPath)\$(TargetName)$(TargetExt)</TargetPath>
         <CleanCommand>rmdir /q/s "$(IntermediateOutputPath)\zip_$(ArchName)"</CleanCommand>
-        <Arguments>"$(PythonExe)" "$(MSBuildThisFileDirectory)\make_zip.py"</Arguments>
-        <Arguments>$(Arguments) -e -o "$(TargetPath)" -t "$(IntermediateOutputPath)\zip_$(ArchName)" -b "$(BuildPath.TrimEnd(`\`))"</Arguments>
-        <Environment>set DOC_FILENAME=python$(PythonVersion).chm</Environment>
+        <Arguments>"$(PythonExe)" "$(PySourcePath)PC\layout"</Arguments>
+        <Arguments>$(Arguments) -b "$(BuildPath.TrimEnd(`\`))" -s "$(PySourcePath.TrimEnd(`\`))"</Arguments>
+        <Arguments>$(Arguments) -t "$(IntermediateOutputPath)\zip_$(ArchName)"</Arguments>
+        <Arguments>$(Arguments) --zip "$(TargetPath)"</Arguments>
+        <Arguments>$(Arguments) --precompile --zip-lib --include-underpth --include-stable --flat-dlls</Arguments>
         <Environment>$(Environment)%0D%0Aset PYTHONPATH=$(PySourcePath)Lib</Environment>
-        <Environment Condition="Exists($(CRTRedist))">$(Environment)%0D%0Aset VCREDIST_PATH=$(CRTRedist)\$(Platform)</Environment>
     </PropertyGroup>
 
     <Target Name="_Build">

Tools/msi/make_zip.py

-import argparse
-import py_compile
-import re
-import sys
-import shutil
-import stat
-import os
-import tempfile
-
-from itertools import chain
-from pathlib import Path
-from zipfile import ZipFile, ZIP_DEFLATED
-
-
-TKTCL_RE = re.compile(r'^(_?tk|tcl).+\.(pyd|dll)', re.IGNORECASE)
-DEBUG_RE = re.compile(r'_d\.(pyd|dll|exe|pdb|lib)$', re.IGNORECASE)
-PYTHON_DLL_RE = re.compile(r'python\d\d?\.dll$', re.IGNORECASE)
-
-DEBUG_FILES = {
-    '_ctypes_test',
-    '_testbuffer',
-    '_testcapi',
-    '_testconsole',
-    '_testimportmultiple',
-    '_testmultiphase',
-    'xxlimited',
-    'python3_dstub',
-}
-
-EXCLUDE_FROM_LIBRARY = {
-    '__pycache__',
-    'idlelib',
-    'pydoc_data',
-    'site-packages',
-    'tkinter',
-    'turtledemo',
-}
-
-EXCLUDE_FROM_EMBEDDABLE_LIBRARY = {
-    'ensurepip',
-    'venv',
-}
-
-EXCLUDE_FILE_FROM_LIBRARY = {
-    'bdist_wininst.py',
-}
-
-EXCLUDE_FILE_FROM_LIBS = {
-    'liblzma',
-    'python3stub',
-}
-
-EXCLUDED_FILES = {
-    'pyshellext',
-}
-
-def is_not_debug(p):
-    if DEBUG_RE.search(p.name):
-        return False
-
-    if TKTCL_RE.search(p.name):
-        return False
-
-    return p.stem.lower() not in DEBUG_FILES and p.stem.lower() not in EXCLUDED_FILES
-
-def is_not_debug_or_python(p):
-    return is_not_debug(p) and not PYTHON_DLL_RE.search(p.name)
-
-def include_in_lib(p):
-    name = p.name.lower()
-    if p.is_dir():
-        if name in EXCLUDE_FROM_LIBRARY:
-            return False
-        if name == 'test' and p.parts[-2].lower() == 'lib':
-            return False
-        if name in {'test', 'tests'} and p.parts[-3].lower() == 'lib':
-            return False
-        return True
-
-    if name in EXCLUDE_FILE_FROM_LIBRARY:
-        return False
-
-    suffix = p.suffix.lower()
-    return suffix not in {'.pyc', '.pyo', '.exe'}
-
-def include_in_embeddable_lib(p):
-    if p.is_dir() and p.name.lower() in EXCLUDE_FROM_EMBEDDABLE_LIBRARY:
-        return False
-
-    return include_in_lib(p)
-
-def include_in_libs(p):
-    if not is_not_debug(p):
-        return False
-
-    return p.stem.lower() not in EXCLUDE_FILE_FROM_LIBS
-
-def include_in_tools(p):
-    if p.is_dir() and p.name.lower() in {'scripts', 'i18n', 'pynche', 'demo', 'parser'}:
-        return True
-
-    return p.suffix.lower() in {'.py', '.pyw', '.txt'}
-
-BASE_NAME = 'python{0.major}{0.minor}'.format(sys.version_info)
-
-FULL_LAYOUT = [
-    ('/', '$build', 'python.exe', is_not_debug),
-    ('/', '$build', 'pythonw.exe', is_not_debug),
-    ('/', '$build', 'python{}.dll'.format(sys.version_info.major), is_not_debug),
-    ('/', '$build', '{}.dll'.format(BASE_NAME), is_not_debug),
-    ('DLLs/', '$build', '*.pyd', is_not_debug),
-    ('DLLs/', '$build', '*.dll', is_not_debug_or_python),
-    ('include/', 'include', '*.h', None),
-    ('include/', 'PC', 'pyconfig.h', None),
-    ('Lib/', 'Lib', '**/*', include_in_lib),
-    ('libs/', '$build', '*.lib', include_in_libs),
-    ('Tools/', 'Tools', '**/*', include_in_tools),
-]
-
-EMBED_LAYOUT = [
-    ('/', '$build', 'python*.exe', is_not_debug),
-    ('/', '$build', '*.pyd', is_not_debug),
-    ('/', '$build', '*.dll', is_not_debug),
-    ('{}.zip'.format(BASE_NAME), 'Lib', '**/*', include_in_embeddable_lib),
-]
-
-if os.getenv('DOC_FILENAME'):
-    FULL_LAYOUT.append(('Doc/', 'Doc/build/htmlhelp', os.getenv('DOC_FILENAME'), None))
-if os.getenv('VCREDIST_PATH'):
-    FULL_LAYOUT.append(('/', os.getenv('VCREDIST_PATH'), 'vcruntime*.dll', None))
-    EMBED_LAYOUT.append(('/', os.getenv('VCREDIST_PATH'), 'vcruntime*.dll', None))
-
-def copy_to_layout(target, rel_sources):
-    count = 0
-
-    if target.suffix.lower() == '.zip':
-        if target.exists():
-            target.unlink()
-
-        with ZipFile(str(target), 'w', ZIP_DEFLATED) as f:
-            with tempfile.TemporaryDirectory() as tmpdir:
-                for s, rel in rel_sources:
-                    if rel.suffix.lower() == '.py':
-                        pyc = Path(tmpdir) / rel.with_suffix('.pyc').name
-                        try:
-                            py_compile.compile(str(s), str(pyc), str(rel), doraise=True, optimize=2)
-                        except py_compile.PyCompileError:
-                            f.write(str(s), str(rel))
-                        else:
-                            f.write(str(pyc), str(rel.with_suffix('.pyc')))
-                    else:
-                        f.write(str(s), str(rel))
-                    count += 1
-
-    else:
-        for s, rel in rel_sources:
-            dest = target / rel
-            try:
-                dest.parent.mkdir(parents=True)
-            except FileExistsError:
-                pass
-            if dest.is_file():
-                dest.chmod(stat.S_IWRITE)
-            shutil.copy(str(s), str(dest))
-            if dest.is_file():
-                dest.chmod(stat.S_IWRITE)
-            count += 1
-
-    return count
-
-def rglob(root, pattern, condition):
-    dirs = [root]
-    recurse = pattern[:3] in {'**/', '**\\'}
-    while dirs:
-        d = dirs.pop(0)
-        for f in d.glob(pattern[3:] if recurse else pattern):
-            if recurse and f.is_dir() and (not condition or condition(f)):
-                dirs.append(f)
-            elif f.is_file() and (not condition or condition(f)):
-                yield f, f.relative_to(root)
-
-def main():
-    parser = argparse.ArgumentParser()
-    parser.add_argument('-s', '--source', metavar='dir', help='The directory containing the repository root', type=Path)
-    parser.add_argument('-o', '--out', metavar='file', help='The name of the output archive', type=Path, default=None)
-    parser.add_argument('-t', '--temp', metavar='dir', help='A directory to temporarily extract files into', type=Path, default=None)
-    parser.add_argument('-e', '--embed', help='Create an embedding layout', action='store_true', default=False)
-    parser.add_argument('-b', '--build', help='Specify the build directory', type=Path, default=None)
-    ns = parser.parse_args()
-
-    source = ns.source or (Path(__file__).resolve().parent.parent.parent)
-    out = ns.out
-    build = ns.build or Path(sys.exec_prefix)
-    assert isinstance(source, Path)
-    assert not out or isinstance(out, Path)
-    assert isinstance(build, Path)
-
-    if ns.temp:
-        temp = ns.temp
-        delete_temp = False
-    else:
-        temp = Path(tempfile.mkdtemp())
-        delete_temp = True
-
-    if out:
-        try:
-            out.parent.mkdir(parents=True)
-        except FileExistsError:
-            pass
-    try:
-        temp.mkdir(parents=True)
-    except FileExistsError:
-        pass
-
-    layout = EMBED_LAYOUT if ns.embed else FULL_LAYOUT
-
-    try:
-        for t, s, p, c in layout:
-            if s == '$build':
-                fs = build
-            else:
-                fs = source / s
-            files = rglob(fs, p, c)
-            extra_files = []
-            if s == 'Lib' and p == '**/*':
-                extra_files.append((
-                    source / 'tools' / 'msi' / 'distutils.command.bdist_wininst.py',
-                    Path('distutils') / 'command' / 'bdist_wininst.py'
-                ))
-            copied = copy_to_layout(temp / t.rstrip('/'), chain(files, extra_files))
-            print('Copied {} files'.format(copied))
-
-        if ns.embed:
-            with open(str(temp / (BASE_NAME + '._pth')), 'w') as f:
-                print(BASE_NAME + '.zip', file=f)
-                print('.', file=f)
-                print('', file=f)
-                print('# Uncomment to run site.main() automatically', file=f)
-                print('#import site', file=f)
-
-        if out:
-            total = copy_to_layout(out, rglob(temp, '**/*', None))
-            print('Wrote {} files to {}'.format(total, out))
-    finally:
-        if delete_temp:
-            shutil.rmtree(temp, True)
-
-
-if __name__ == "__main__":
-    sys.exit(int(main() or 0))

Tools/msi/sdktools.psm1

+function Find-Tool {
+    param([string]$toolname)
+
+    $kitroot = (gp 'HKLM:\SOFTWARE\Microsoft\Windows Kits\Installed Roots\').KitsRoot10
+    $tool = (gci -r "$kitroot\Bin\*\x64\$toolname" | sort FullName -Desc | select -First 1)
+    if (-not $tool) {
+        throw "$toolname is not available"
+    }
+    Write-Host "Found $toolname at $($tool.FullName)"
+    return $tool.FullName
+}
+
+Set-Alias SignTool (Find-Tool "signtool.exe") -Scope Script
+
+function Sign-File {
+    param([string]$certname, [string]$certsha1, [string]$certfile, [string]$description, [string[]]$files)
+
+    if (-not $description) {
+        $description = $env:SigningDescription;
+        if (-not $description) {
+            $description = "Python";
+        }
+    }
+    if (-not $certname) {
+        $certname = $env:SigningCertificate;
+    }
+    if (-not $certfile) {
+        $certfile = $env:SigningCertificateFile;
+    }
+
+    foreach ($a in $files) {
+        if ($certsha1) {
+            SignTool sign /sha1 $certsha1 /fd sha256 /t http://timestamp.verisign.com/scripts/timestamp.dll /d $description $a
+        } elseif ($certname) {
+            SignTool sign /n $certname /fd sha256 /t http://timestamp.verisign.com/scripts/timestamp.dll /d $description $a
+        } elseif ($certfile) {
+            SignTool sign /f $certfile /fd sha256 /t http://timestamp.verisign.com/scripts/timestamp.dll /d $description $a
+        } else {
+            SignTool sign /a /fd sha256 /t http://timestamp.verisign.com/scripts/timestamp.dll /d $description $a
+        }
+    }
+}
+

Tools/msi/sign_build.ps1

+<#
+.Synopsis
+    Recursively signs the contents of a directory.
+.Description
+    Given the file patterns, code signs the contents.
+.Parameter root
+    The root directory to sign.
+.Parameter patterns
+    The file patterns to sign
+.Parameter description
+    The description to add to the signature (optional).
+.Parameter certname
+    The name of the certificate to sign with (optional).
+.Parameter certsha1
+    The SHA1 hash of the certificate to sign with (optional).
+#>
+param(
+    [Parameter(Mandatory=$true)][string]$root,
+    [string[]]$patterns=@("*.exe", "*.dll", "*.pyd"),
+    [string]$description,
+    [string]$certname,
+    [string]$certsha1,
+    [string]$certfile
+)
+
+$tools = $script:MyInvocation.MyCommand.Path | Split-Path -parent;
+Import-Module $tools\sdktools.psm1 -WarningAction SilentlyContinue -Force
+
+pushd $root
+try {
+    Sign-File -certname $certname -certsha1 $certsha1 -certfile $certfile -description $description -files (gci -r $patterns)
+} finally {
+    popd
+}
\ No newline at end of file

Tools/nuget/make_pkg.proj

@@ -20,25 +20,28 @@
         <SignOutput>false</SignOutput>
         <TargetName>$(OutputName).$(NuspecVersion)</TargetName>
         <TargetExt>.nupkg</TargetExt>
-        <IntermediateOutputPath>$(IntermediateOutputPath)\nuget_$(ArchName)</IntermediateOutputPath>
+        <IntermediateOutputPath>$(IntermediateOutputPath)\nuget_$(ArchName)\</IntermediateOutputPath>
         
-        <CleanCommand>rmdir /q/s "$(IntermediateOutputPath)"</CleanCommand>
+        <CleanCommand>rmdir /q/s "$(IntermediateOutputPath.TrimEnd(`\`))"</CleanCommand>
         
-        <PythonArguments>"$(PythonExe)" "$(MSBuildThisFileDirectory)\..\msi\make_zip.py"</PythonArguments>
-        <PythonArguments>$(PythonArguments) -t "$(IntermediateOutputPath)" -b "$(BuildPath.TrimEnd(`\`))"</PythonArguments>
+        <PythonArguments>"$(PythonExe)" "$(PySourcePath)PC\layout"</PythonArguments>
+        <PythonArguments>$(PythonArguments) -b "$(BuildPath.TrimEnd(`\`))" -s "$(PySourcePath.TrimEnd(`\`))"</PythonArguments>
+        <PythonArguments>$(PythonArguments) -t "$(IntermediateOutputPath)obj"</PythonArguments>
+        <PythonArguments>$(PythonArguments) --copy "$(IntermediateOutputPath)pkg"</PythonArguments>
+        <PythonArguments>$(PythonArguments) --include-dev --include-tools --include-pip --include-stable --include-launcher --include-props</PythonArguments>
         
-        <PipArguments>"$(IntermediateOutputPath)\python.exe" -B -c "import sys; sys.path.append(r'$(PySourcePath)\Lib'); import ensurepip; ensurepip._main()"</PipArguments>
-        <PackageArguments Condition="$(Packages) != ''">"$(IntermediateOutputPath)\python.exe" -B -m pip install -U $(Packages)</PackageArguments>
+        <PackageArguments Condition="$(Packages) != ''">"$(IntermediateOutputPath)pkg\pip.exe" -B -m pip install -U $(Packages)</PackageArguments>
         
-        <NugetPackCommand>"$(Nuget)" pack "$(MSBuildThisFileDirectory)\$(OutputName).nuspec" -BasePath "$(IntermediateOutputPath)"</NugetPackCommand>
+        <NugetPackCommand>"$(Nuget)" pack "$(MSBuildThisFileDirectory)\$(OutputName).nuspec" -BasePath "$(IntermediateOutputPath)pkg"</NugetPackCommand>
         <NugetPackSymbolsCommand Condition="Exists('$(MSBuildThisFileDirectory)\$(OutputName).symbols.nuspec')">"$(Nuget)" pack "$(MSBuildThisFileDirectory)\$(OutputName).symbols.nuspec" -BasePath "$(BuildPath.TrimEnd(`\`))"</NugetPackSymbolsCommand>
         <NugetArguments>$(NugetArguments) -OutputDirectory "$(OutputPath.Trim(`\`))"</NugetArguments>
         <NugetArguments>$(NugetArguments) -Version "$(NuspecVersion)"</NugetArguments>
         <NugetArguments>$(NugetArguments) -NoPackageAnalysis -NonInteractive</NugetArguments>
         
-        <Environment>set DOC_FILENAME=python$(PythonVersion).chm</Environment>
         <Environment>$(Environment)%0D%0Aset PYTHONPATH=$(PySourcePath)Lib</Environment>
-        <Environment Condition="Exists($(CRTRedist))">$(Environment)%0D%0Aset VCREDIST_PATH=$(CRTRedist)\$(Platform)</Environment>
+        <Environment>$(Environment)%0D%0Aset PYTHON_NUSPEC_VERSION=$(NuspecVersion)</Environment>
+        <Environment Condition="$(Platform) != 'x86'">$(Environment)%0D%0Aset PYTHON_PROPS_PLATFORM=$(Platform)</Environment>
+        <Environment Condition="$(Platform) == 'x86'">$(Environment)%0D%0Aset PYTHON_PROPS_PLATFORM=Win32</Environment>
         <Environment>$(Environment)%0D%0Amkdir "$(OutputPath.Trim(`\`))" &gt;nul 2&gt;nul</Environment>
     </PropertyGroup>
 
@@ -48,22 +51,7 @@
 
     <Target Name="_Build">
         <Exec Command="$(CleanCommand)" />
-        <Exec Command="setlocal%0D%0A$(Environment)%0D%0A$(PythonArguments)" />
-        <Exec Command="$(PipArguments)" />
-        <Exec Command="$(PackageArguments)" Condition="$(PackageArguments) != ''" />
-
-        <PropertyGroup>
-            <_PropsContents>$([System.IO.File]::ReadAllText('python.props'))</_PropsContents>
-            <_PropsContents>$(_PropsContents.Replace('$$PYTHON_TAG$$', '$(MajorVersionNumber).$(MinorVersionNumber)'))</_PropsContents>
-            <_PropsContents>$(_PropsContents.Replace('$$PYTHON_VERSION$$', '$(NuspecVersion)'))</_PropsContents>
-            <_PropsContents Condition="$(Platform) == 'x86'">$(_PropsContents.Replace('$$PYTHON_PLATFORM$$', 'Win32'))</_PropsContents>
-            <_PropsContents Condition="$(Platform) != 'x86'">$(_PropsContents.Replace('$$PYTHON_PLATFORM$$', '$(Platform)'))</_PropsContents>
-            <_PropsContents>$(_PropsContents.Replace('$$PYTHON_TARGET$$', '_GetPythonRuntimeFilesDependsOn$(MajorVersionNumber)$(MinorVersionNumber)_$(Platform)'))</_PropsContents>
-            <_ExistingContents Condition="Exists('$(IntermediateOutputPath)\python.props')">$([System.IO.File]::ReadAllText('$(IntermediateOutputPath)\python.props'))</_ExistingContents>
-        </PropertyGroup>
-        <WriteLinesToFile File="$(IntermediateOutputPath)\python.props"
-                          Lines="$(_PropsContents)"
-                          Condition="$(_PropsContents) != $(_ExistingContents)" />
+        <Exec Command="setlocal%0D%0A$(Environment)%0D%0A$(PythonArguments)%0D%0A$(PackageArguments)" />
 
         <Exec Command="$(NugetPackCommand) $(NugetArguments)" />
         <Exec Command="$(NugetPackSymbolsCommand) $(NugetArguments)" Condition="$(NugetPackSymbolsCommand) != ''" />