Commit 0aebd262 authored by Yueh-Shun Li's avatar Yueh-Shun Li
Browse files

python3Packages.buildPythonPackage: add internal helper getFinalPassthru 

Add getFinalPassthru, an internal helper function that
produces informative error message
when an atttribute is not found in `finalAttrs.passthru`.
parent ca40fe77

pkgs/development/interpreters/python/mk-python-derivation.nix

+14 −0
Original line number Diff line number Diff line
@@ -204,6 +204,20 @@ let 
  self = stdenv.mkDerivation (

    finalAttrs:

    let

      getFinalPassthru =

        let

          pos = unsafeGetAttrPos "passthru" finalAttrs;

        in

        attrName:

        finalAttrs.passthru.${attrName} or (throw (

          ''

            ${finalAttrs.name}: passthru.${attrName} missing after overrideAttrs overriding.

          ''

          + optionalString (pos != null) ''

            Last overridden at ${pos.file}:${toString pos.line}

          ''

        ));



      format' =

        assert (pyproject != null) -> (format == null);

        if pyproject != null then