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74 lines
1.8 KiB
Nix
74 lines
1.8 KiB
Nix
# fetchPipMetadata downloads python packages specified by executing
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# `pip download` on a source tree, or a list of requirements.
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# TODO: ignore if packages are yanked
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{
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lib,
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writeText,
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# Use the nixpkgs default python version for the proxy script.
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# The python version select by the user below might be too old for the
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# dependencies required by the proxy
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python3,
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# Specify the python version for which the packages should be downloaded.
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# Pip needs to be executed from that specific python version.
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# Pip accepts '--python-version', but this works only for wheel packages.
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pythonInterpreter,
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# list of strings of requirements.txt entries
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requirementsList ? [],
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# list of requirements.txt files
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requirementsFiles ? [],
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pipFlags ? [],
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pipVersion ? "24.0",
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env ? {},
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wheelVersion ? "0.43.0",
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nativeBuildInputs ? [],
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# executable that returns the project root
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findRoot,
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nix,
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gitMinimal,
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writePureShellScript,
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nix-prefetch-scripts,
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openssh,
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fetchFromGitHub,
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fetchurl,
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rustPlatform,
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}: let
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package = import ./package.nix {
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inherit
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lib
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python3
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gitMinimal
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nix-prefetch-scripts
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;
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};
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path = [nix gitMinimal openssh] ++ nativeBuildInputs;
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args = writeText "pip-args" (builtins.toJSON {
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# add some variables to the derivation to integrate them into finalAttrs
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inherit
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pipVersion
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pipFlags
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pythonInterpreter
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requirementsFiles
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requirementsList
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wheelVersion
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;
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});
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script =
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writePureShellScript
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path
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''
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${
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lib.foldlAttrs
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(acc: name: value: acc + "\nexport " + lib.toShellVar name value)
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""
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env
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}
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${package}/bin/fetch_pip_metadata \
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--json-args-file ${args} \
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--project-root $(${findRoot})
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'';
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in
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script
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