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{ lib, stdenv, buildPythonPackage, fetchFromGitHub, pythonOlder
, colorama, mypy, pyyaml, regex
, dataclasses, typing
, pytestrunner, pytest-mypy
}:
buildPythonPackage rec {
pname = "TatSu";
version = "5.0.0";
src = fetchFromGitHub {
owner = "neogeny";
repo = pname;
rev = "v${version}";
sha256 = "1c16fcxf0xjkh5py9bnj6ljb9krhrj57mkwayl1w1dvzwl5lkgj3";
};
# Since version 5.0.0 only >=3.8 is officially supported, but ics is not
# compatible with Python 3.8 due to aiohttp:
disabled = pythonOlder "3.7";
postPatch = ''
substituteInPlace setup.py \
--replace "python_requires='>=3.8'," "python_requires='>=3.7',"
'';
nativeBuildInputs = [ pytestrunner ];
propagatedBuildInputs = [ colorama mypy pyyaml regex ]
++ lib.optionals (pythonOlder "3.7") [ dataclasses ]
++ lib.optionals (pythonOlder "3.5") [ typing ];
checkInputs = [ pytest-mypy ];
checkPhase = ''
pytest test/
'';
meta = with lib; {
description = "Generates Python parsers from grammars in a variation of EBNF";
longDescription = ''
TatSu (the successor to Grako) is a tool that takes grammars in a
variation of EBNF as input, and outputs memoizing (Packrat) PEG parsers in
Python.
'';
homepage = "https://tatsu.readthedocs.io/";
license = licenses.bsd2;
maintainers = with maintainers; [ primeos ];
};
}
|