nixpkgs/pkgs/development/python-modules/pyparsing/default.nix

{
  buildPythonPackage,
  fetchFromGitHub,
  lib,
  flit-core,
  jinja2,
  pytestCheckHook,
  railroad-diagrams,
  pyparsing,
}:

buildPythonPackage rec {
  pname = "pyparsing";
  version = "3.2.3";
  format = "pyproject";

  src = fetchFromGitHub {
    owner = "pyparsing";
    repo = "pyparsing";
    tag = version;
    hash = "sha256-irRSylY16Vcm2zsue1Iv+1eqYGZSAqhkqHrdjdhznlM=";
  };

  nativeBuildInputs = [ flit-core ];

  # circular dependencies with pytest if enabled by default
  doCheck = false;
  nativeCheckInputs = [
    jinja2
    pytestCheckHook
    railroad-diagrams
  ];

  pythonImportsCheck = [ "pyparsing" ];

  passthru.tests = {
    check = pyparsing.overridePythonAttrs (_: {
      doCheck = true;
    });
  };

  meta = with lib; {
    homepage = "https://github.com/pyparsing/pyparsing";
    description = "Python library for creating PEG parsers";
    longDescription = ''
      The pyparsing module is an alternative approach to creating and executing
      simple grammars, vs. the traditional lex/yacc approach, or the use of
      regular expressions. The pyparsing module provides a library of classes
      that client code uses to construct the grammar directly in Python code.
    '';
    license = licenses.mit;
    maintainers = with maintainers; [ kamadorueda ];
  };
}