python.pipInstallHook: avoid producing wrong direct_url.json file
When installing many python packages, a `direct_url.json` file appeared in the lib directory. Example: ```sh ➤ nix build nixpkgs/29755fec55e58a315b517d431b2be261772f2b80#python3Packages.flask ➤ cat result/lib/python3.10/site-packages/Flask-2.2.3.dist-info/direct_url.json {"archive_info": {}, "url": "file:///build/Flask-2.2.3/dist/Flask-2.2.3-py3-none-any.whl"}⏎ ``` As you can see, that file contains a wrong reference to `/build`. In https://discuss.python.org/t/pep-610-usage-guidelines-for-linux-distributions/4012/4 there's an explanation on how to avoid this. Here, I'm implementing that change for nixpkgs. @moduon MT-1075
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@ -10,9 +10,7 @@ pipInstallPhase() {
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mkdir -p "$out/@pythonSitePackages@"
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export PYTHONPATH="$out/@pythonSitePackages@:$PYTHONPATH"
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pushd dist || return 1
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@pythonInterpreter@ -m pip install ./*.whl --no-index --no-warn-script-location --prefix="$out" --no-cache $pipInstallFlags
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popd || return 1
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@pythonInterpreter@ -m pip install $pname --find-links dist --no-index --no-warn-script-location --prefix="$out" --no-cache $pipInstallFlags
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runHook postInstall
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echo "Finished executing pipInstallPhase"
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