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