71 lines
1.7 KiB
Nix
71 lines
1.7 KiB
Nix
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# Fetch from PyPi legacy API as documented in https://warehouse.pypa.io/api-reference/legacy.html
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{
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runCommand,
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lib,
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python3,
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cacert,
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}@pkgs:
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let
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inherit (lib)
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optionalAttrs
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fetchers
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optional
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inPureEvalMode
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filter
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head
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concatStringsSep
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escapeShellArg
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;
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impureEnvVars = fetchers.proxyImpureEnvVars ++ optional inPureEvalMode "NETRC";
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in
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lib.makeOverridable (
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{
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# package name
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pname,
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# Package index
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url ? null,
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# Multiple package indices to consider
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urls ? [ ],
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# filename including extension
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file,
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# SRI hash
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hash,
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# allow overriding the derivation name
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name ? null,
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# allow overriding cacert using src.override { cacert = cacert.override { extraCertificateFiles = [ ./path/to/cert.pem ]; }; }
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cacert ? pkgs.cacert,
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}:
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let
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urls' = urls ++ optional (url != null) url;
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pathParts = filter ({ prefix, path }: "NETRC" == prefix) builtins.nixPath;
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netrc_file = if (pathParts != [ ]) then (head pathParts).path else "";
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in
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# Assert that we have at least one URL
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assert urls' != [ ];
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runCommand file
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(
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{
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nativeBuildInputs = [
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python3
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cacert
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];
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inherit impureEnvVars;
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outputHashMode = "flat";
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# if hash is empty select a default algo to let nix propose the actual hash.
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outputHashAlgo = if hash == "" then "sha256" else null;
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outputHash = hash;
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}
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// optionalAttrs (name != null) { inherit name; }
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// optionalAttrs (!inPureEvalMode) { env.NETRC = netrc_file; }
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)
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''
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python ${./fetch-legacy.py} ${
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concatStringsSep " " (map (url: "--url ${escapeShellArg url}") urls')
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} --pname ${pname} --filename ${file}
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mv ${file} $out
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''
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)
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