ci.eval.compare: extract a derivation for cmp-stats

  runCommand,

  writeText,

  python3,

  stdenvNoCC,

  makeWrapper,

}:

let

  python = python3.withPackages (ps: [

    ps.numpy

    ps.pandas

    ps.scipy

  ]);

  cmp-stats = stdenvNoCC.mkDerivation {

    pname = "cmp-stats";

    version = lib.trivial.release;

    dontUnpack = true;

    nativeBuildInputs = [ makeWrapper ];

    installPhase = ''

      runHook preInstall

      mkdir -p $out/share/cmp-stats

      cp ${./cmp-stats.py} "$out/share/cmp-stats/cmp-stats.py"

      makeWrapper ${python.interpreter} "$out/bin/cmp-stats" \

          --add-flags "$out/share/cmp-stats/cmp-stats.py"

      runHook postInstall

    '';

    meta = {

      description = "Performance comparison of Nix evaluation statistics";

      license = lib.licenses.mit;

      mainProgram = "cmp-stats";

      maintainers = with lib.maintainers; [ philiptaron ];

    };

  };

in

{

  combinedDir,

  touchedFilesJson,

    # Don't depend on -dev outputs to reduce closure size for CI.

    nativeBuildInputs = map lib.getBin [

      jq

      (python3.withPackages (

        ps: with ps; [

          numpy

          pandas

          scipy

        ]

      ))

      cmp-stats

    ];

    maintainers = builtins.toJSON maintainers;

    passAsFile = [ "maintainers" ];

        echo

      } >> $out/step-summary.md

      python3 ${./cmp-stats.py} >> $out/step-summary.md

      cmp-stats >> $out/step-summary.md

    else

      # Package chunks are the same in both revisions