pythonPackages.fetchPypi: put expression in own file
Also fixes an evaluation bug.
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pkgs/development/interpreters/python/fetchpypi.nix
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22
pkgs/development/interpreters/python/fetchpypi.nix
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@ -0,0 +1,22 @@
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# `fetchPypi` function for fetching artifacts from PyPI.
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{ fetchurl
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, makeOverridable
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}:
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makeOverridable( {format ? "setuptools", ... } @attrs:
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let
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fetchWheel = {pname, version, sha256, python ? "py2.py3", abi ? "none", platform ? "any"}:
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# Fetch a wheel. By default we fetch an universal wheel.
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# See https://www.python.org/dev/peps/pep-0427/#file-name-convention for details regarding the optional arguments.
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let
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url = "https://files.pythonhosted.org/packages/${python}/${builtins.substring 0 1 pname}/${pname}/${pname}-${version}-${python}-${abi}-${platform}.whl";
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in fetchurl {inherit url sha256;};
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fetchSource = {pname, version, sha256, extension ? "tar.gz"}:
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# Fetch a source tarball.
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let
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url = "mirror://pypi/${builtins.substring 0 1 pname}/${pname}/${pname}-${version}.${extension}";
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in fetchurl {inherit url sha256;};
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fetcher = (if format == "wheel" then fetchWheel
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else if format == "setuptools" then fetchSource
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else throw "Unsupported format ${format}");
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in fetcher (builtins.removeAttrs attrs ["format"]) )
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@ -58,23 +58,7 @@ let
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# See build-setupcfg/default.nix for documentation.
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buildSetupcfg = import ../build-support/build-setupcfg self;
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fetchPypi = makeOverridable( {format ? "setuptools", ... } @attrs:
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let
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fetchWheel = {pname, version, sha256, python ? "py2.py3", abi ? "none", platform ? "any"}:
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# Fetch a wheel. By default we fetch an universal wheel.
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# See https://www.python.org/dev/peps/pep-0427/#file-name-convention for details regarding the optional arguments.
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let
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url = "https://files.pythonhosted.org/packages/${python}/${builtins.substring 0 1 pname}/${pname}/${pname}-${version}-${python}-${abi}-${platform}.whl";
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in pkgs.fetchurl {inherit url sha256;};
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fetchSource = {pname, version, sha256, extension ? "tar.gz"}:
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# Fetch a source tarball.
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let
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url = "mirror://pypi/${builtins.substring 0 1 pname}/${pname}/${pname}-${version}.${extension}";
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in pkgs.fetchurl {inherit url sha256;};
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fetcher = (if format == "wheel" then fetchWheel
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else if format == "setuptools" then fetchSource
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else throw "Unsupported kind ${kind}");
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in fetcher (builtins.removeAttrs attrs ["format"]) );
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fetchPypi = callPackage ../development/interpreters/python/fetchpypi.nix {};
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# Check whether a derivation provides a Python module.
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hasPythonModule = drv: drv?pythonModule && drv.pythonModule == python;
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