example add pyproject.toml

example/pyproject.toml

+[build-system]
+requires = ["setuptools", "wheel", "setuptools_dso"]

example/setup.py

@@ -19,7 +19,9 @@ ext = Extension('dsodemo.ext.dtest', ['src/extension.cpp'],
 setup(
     name='dsodemo',
     version="0.1",
-    setup_requires = ['setuptools_dso'],
+    # setup/build time dependencies listed in pyproject.toml
+    # cf. PEP 518
+    #setup_requires = ['setuptools_dso'],
     packages=['dsodemo', 'dsodemo.ext'],
     package_dir={'': 'src'},
     ext_modules = [ext],

travis-docker.sh

@@ -10,24 +10,24 @@ TOP="$PWD/root"
 
 for PYBIN in /opt/python/*/bin
 do
-    rm -rf "$TOP"
+    rm -rf "$TOP" build repo
     export PYTHONPATH="$BASE"
 
-    rm -rf build
+    # needed for isolated wheel build
+    "${PYBIN}/python" -m pip download -d repo setuptools wheel
+
     "${PYBIN}/python" setup.py clean -a
     "${PYBIN}/python" setup.py sdist
+    "${PYBIN}/python" -m pip wheel -v --no-index -f repo -w repo dist/setuptools_dso-*.tar.gz
 
     find .
 
-    "${PYBIN}/python" setup.py install --root "$TOP"
-
-    find "$TOP" -name setuptools_dso
-    export PYTHONPATH="$BASE:$(dirname $(find "$TOP" -name setuptools_dso ))"
-
     cd example
     rm -rf build
-    "${PYBIN}/python" setup.py clean -a
-    "${PYBIN}/python" setup.py install --single-version-externally-managed --root "$TOP"
+    "${PYBIN}/python" -m pip wheel -v --no-index -f ../repo -w ../repo .
+    git status
     cd ..
+
+    "${PYBIN}/python" -m pip install -v --no-index -f repo dsodemo
     "${PYBIN}/python" -m dsodemo.cli
 done