makePythonWriter

pkgs.writers.makePythonWriter

Functor

Docs pulled from | This Revision | 10 minutes ago

makePythonWriter takes python and compatible pythonPackages and produces python script writer, which validates the script with flake8 at build time. If any libraries are specified, python.withPackages is used as interpreter, otherwise the "bare" python is used.

Inputs

python: 1. Function argument
pythonPackages: 2. Function argument
buildPythonPackages: 3. Function argument
name: 4. Function argument
attrs: 5. Function argument

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Implementation

The following is the current implementation of this function.

makePythonWriter =
    python: pythonPackages: buildPythonPackages: name:
    {
      libraries ? [ ],
      flakeIgnore ? [ ],
      doCheck ? true,
      ...
    }@args:
    let
      ignoreAttribute =
        optionalString (flakeIgnore != [ ])
          "--ignore ${concatMapStringsSep "," escapeShellArg flakeIgnore}";
    in
    makeScriptWriter (
      (builtins.removeAttrs args [
        "libraries"
        "flakeIgnore"
        "doCheck"
      ])
      // {
        interpreter =
          if pythonPackages != pkgs.pypy2Packages || pythonPackages != pkgs.pypy3Packages then
            if libraries == [ ] then python.interpreter else (python.withPackages (ps: libraries)).interpreter
          else
            python.interpreter;
        check = optionalString (python.isPy3k && doCheck) (
          writeDash "pythoncheck.sh" ''
            exec ${buildPythonPackages.flake8}/bin/flake8 --show-source ${ignoreAttribute} "$1"
          ''
        );
      }
    ) name;