Commit 98b7c55c authored by Gary Poster's avatar Gary Poster

support limiting packages from site-packages

parent e73c70bb
.installed.cfg
bin
build
develop-eggs
eggs
parts
src/zc.buildout.egg-info
z3c.recipe.scripts_/src/z3c.recipe.scripts.egg-info
zc.recipe.egg_/src/zc.recipe.egg.egg-info
This diff is collapsed.
......@@ -89,6 +89,14 @@ use_dependency_links
for using dependency_links in preference to other
locations. Defaults to true.
include_site_packages
A flag indicating whether Python's non-standard-library packages should
be available for finding dependencies. Defaults to true.
Paths outside of Python's standard library--or more precisely, those that
are not included when Python is started with the -S argument--are loosely
referred to as "site-packages" here.
relative_paths
Adjust egg paths so they are relative to the script path. This
allows scripts to work when scripts and eggs are moved, as long as
......@@ -399,6 +407,68 @@ dictionary:
>>> [d.version for d in ws]
['0.3', '1.1']
Dependencies in Site Packages
-----------------------------
Paths outside of Python's standard library--or more precisely, those that are
not included when Python is started with the -S argument--are loosely referred
to as "site-packages" here. These site-packages are searched by default for
distributions. This can be disabled, so that, for instance, a system Python
can be used with buildout, cleaned of any packages installed by a user or
system package manager.
The default behavior can be controlled and introspected using
zc.buildout.easy_install.include_site_packages.
>>> zc.buildout.easy_install.include_site_packages()
True
Here's an example of using a Python executable that includes our dependencies.
Our "py_path" will have the "demoneeded," and "demo" packages available.
We'll simply be asking for "demoneeded" here, but without any external
index or links.
>>> from zc.buildout.tests import create_sample_sys_install
>>> py_path, site_packages_path = make_py()
>>> create_sample_sys_install(site_packages_path)
>>> example_dest = tmpdir('site-packages-example-install')
>>> workingset = zc.buildout.easy_install.install(
... ['demoneeded'], example_dest, links=[], executable=py_path,
... index=None)
>>> [dist.project_name for dist in workingset]
['demoneeded']
That worked fine. Let's try again with site packages not allowed. We'll
change the policy by changing the default. Notice that the function for
changing the default value returns the previous value.
>>> zc.buildout.easy_install.include_site_packages(False)
True
>>> zc.buildout.easy_install.include_site_packages()
False
>>> zc.buildout.easy_install.clear_index_cache()
>>> rmdir(example_dest)
>>> example_dest = tmpdir('site-packages-example-install')
>>> workingset = zc.buildout.easy_install.install(
... ['demoneeded'], example_dest, links=[], executable=py_path,
... index=None)
Traceback (most recent call last):
...
MissingDistribution: Couldn't find a distribution for 'demoneeded'.
>>> zc.buildout.easy_install.clear_index_cache()
Now we'll reset the default.
>>> zc.buildout.easy_install.include_site_packages(True)
False
>>> zc.buildout.easy_install.include_site_packages()
True
Dependency links
----------------
......@@ -1259,6 +1329,7 @@ call to another text fixture to create.
>>> namespace_eggs = tmpdir('namespace_eggs')
>>> create_sample_namespace_eggs(namespace_eggs)
>>> reset_interpreter()
>>> ws = zc.buildout.easy_install.install(
... ['demo', 'tellmy.fortune'], join(interpreter_dir, 'eggs'),
... links=[link_server, namespace_eggs], index=link_server+'index/')
......@@ -1319,6 +1390,7 @@ The most complex that this function gets is if you use namespace packages,
include site-packages, and use relative paths. For completeness, we'll look
at that result.
>>> reset_interpreter()
>>> generated = zc.buildout.easy_install.generate_scripts(
... interpreter_bin_dir, ws, sys.executable, interpreter_parts_dir,
... interpreter='py', add_site_packages=True,
......
......@@ -222,11 +222,37 @@ def wait_until(label, func, *args, **kw):
time.sleep(0.01)
raise ValueError('Timed out waiting for: '+label)
def get_installer_values():
"""Get the current values for the easy_install module.
This is necessary because instantiating a Buildout will force the
Buildout's values on the installer.
Returns a dict of names-values suitable for set_installer_values."""
names = ('default_versions', 'download_cache', 'install_from_cache',
'prefer_final', 'include_site_packages',
'allowed_eggs_from_site_packages', 'use_dependency_links',
'allow_picked_versions', 'always_unzip'
)
values = {}
for name in names:
values[name] = getattr(zc.buildout.easy_install, name)()
return values
def set_installer_values(values):
"""Set the given values on the installer."""
for name, value in values.items():
getattr(zc.buildout.easy_install, name)(value)
def make_buildout():
# Create a basic buildout.cfg to avoid a warning from buildout:
"""Make a buildout that uses this version of zc.buildout."""
# Create a basic buildout.cfg to avoid a warning from buildout.
open('buildout.cfg', 'w').write(
"[buildout]\nparts =\n"
)
# Get state of installer defaults so we can reinstate them (instantiating
# a Buildout will force the Buildout's defaults on the installer).
installer_values = get_installer_values()
# Use the buildout bootstrap command to create a buildout
zc.buildout.buildout.Buildout(
'buildout.cfg',
......@@ -234,20 +260,23 @@ def make_buildout():
# trick bootstrap into putting the buildout develop egg
# in the eggs dir.
('buildout', 'develop-eggs-directory', 'eggs'),
]
],
user_defaults=False,
).bootstrap([])
# Create the develop-eggs dir, which didn't get created the usual
# way due to the trick above:
os.mkdir('develop-eggs')
# Reinstate the default values of the installer.
set_installer_values(installer_values)
def buildoutSetUp(test):
test.globs['__tear_downs'] = __tear_downs = []
test.globs['register_teardown'] = register_teardown = __tear_downs.append
prefer_final = zc.buildout.easy_install.prefer_final()
installer_values = get_installer_values()
register_teardown(
lambda: zc.buildout.easy_install.prefer_final(prefer_final)
lambda: set_installer_values(installer_values)
)
here = os.getcwd()
......@@ -367,8 +396,6 @@ def buildoutSetUp(test):
make_py = make_py
))
zc.buildout.easy_install.prefer_final(prefer_final)
def buildoutTearDown(test):
for f in test.globs['__tear_downs']:
f()
......
This diff is collapsed.
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment