nixpkgs-suyu/pkgs/development/interpreters/python/hooks/python-imports-check-hook.sh
Frederik Rietdijk f7e28bf5d8 Split buildPythonPackage into setup hooks
This commit splits the `buildPythonPackage` into multiple setup hooks.

Generally, Python packages are built from source to wheels using `setuptools`.
The wheels are then installed with `pip`. Tests were often called with
`python setup.py test` but this is less common nowadays. Most projects
now use a different entry point for running tests, typically `pytest`
or `nosetests`.

Since the wheel format was introduced more tools were built to generate these,
e.g. `flit`. Since PEP 517 is provisionally accepted, defining a build-system
independent format (`pyproject.toml`), `pip` can now use that format to
execute the correct build-system.

In the past I've added support for PEP 517 (`pyproject`) to the Python
builder, resulting in a now rather large builder. Furthermore, it was not possible
to reuse components elsewhere. Therefore, the builder is now split into multiple
setup hooks.

The `setuptoolsCheckHook` is included now by default but in time it should
be removed from `buildPythonPackage` to make it easier to use another hook
(curently one has to pass in `dontUseSetuptoolsCheck`).
2019-09-06 15:18:45 +02:00

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Bash

# Setup hook for checking whether Python imports succeed
echo "Sourcing python-imports-check-hook.sh"
pythonImportsCheckPhase () {
echo "Executing pythonImportsCheckPhase"
if [ -n "$pythonImportsCheck" ]; then
echo "Check whether the following modules can be imported: $pythonImportsCheck"
cd $out && eval "@pythonCheckInterpreter@ -c 'import os; import importlib; list(map(lambda mod: importlib.import_module(mod), os.environ[\"pythonImportsCheck\"].split()))'"
fi
}
if [ -z "$dontUsePythonImportsCheck" ]; then
echo "Using pythonImportsCheckPhase"
preDistPhases+=" pythonImportsCheckPhase"
fi