forked from mirrors/nixpkgs
e2309df85e
When a PEP 517 project file is present, pip will not install prerequisites in `site-packages`: https://pip.pypa.io/en/stable/reference/pip/#pep-517-and-518-support For the shell hook, this has the consequence that the generated temporary directory that is added to PYTHONPATH does not contain `site.py`. As a result, Python does not discover the Python module. Thus when a user executes nix-shell in a project, they cannot import the project's Python module. This change adds the `--no-build-isolation` option to pip when creating the editable environment, to correctly generate `site.py`, even when a `pyproject.toml` is present.
44 lines
1.1 KiB
Bash
44 lines
1.1 KiB
Bash
# Setup hook to use for pip projects
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echo "Sourcing pip-build-hook"
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pipBuildPhase() {
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echo "Executing pipBuildPhase"
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runHook preBuild
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mkdir -p dist
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echo "Creating a wheel..."
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@pythonInterpreter@ -m pip wheel --no-index --no-deps --no-clean --no-build-isolation --wheel-dir dist .
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echo "Finished creating a wheel..."
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runHook postBuild
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echo "Finished executing pipBuildPhase"
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}
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pipShellHook() {
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echo "Executing pipShellHook"
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runHook preShellHook
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# Long-term setup.py should be dropped.
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if [ -e pyproject.toml ]; then
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tmp_path=$(mktemp -d)
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export PATH="$tmp_path/bin:$PATH"
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export PYTHONPATH="$tmp_path/@pythonSitePackages@:$PYTHONPATH"
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mkdir -p "$tmp_path/@pythonSitePackages@"
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@pythonInterpreter@ -m pip install -e . --prefix "$tmp_path" \
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--no-build-isolation >&2
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fi
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runHook postShellHook
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echo "Finished executing pipShellHook"
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}
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if [ -z "${dontUsePipBuild-}" ] && [ -z "${buildPhase-}" ]; then
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echo "Using pipBuildPhase"
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buildPhase=pipBuildPhase
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fi
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if [ -z "${shellHook-}" ]; then
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echo "Using pipShellHook"
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shellHook=pipShellHook
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fi
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