python3Packages.lupa: devendor lua and luajit (#514916)

  lib,

  buildPythonPackage,

  fetchFromGitHub,

  srcOnly,

  runCommand,

  # build-system

  cython,

  setuptools,

  # devendor

  lua5_1,

  lua5_2,

  lua5_3,

  lua5_4,

  lua5_5,

  luajit_2_0,

  luajit_2_1,

}:

buildPythonPackage (finalAttrs: {

  pname = "lupa";

  version = "2.8";

    owner = "scoder";

    repo = "lupa";

    tag = "lupa-${finalAttrs.version}";

    # Lua sources are vendored as submodules under third-party/.

    # They are needed so that setup.py builds properly named backend

    # modules (e.g. lua51, lua54, luajit21) expected by consumers like fakeredis.

    # we fetch the vendored lua sources for gracefull de-vendor degredation when a new lua is added

    fetchSubmodules = true;

    hash = "sha256-XLBUQ1TrzWWST9RJdMTnpsceldDNzidnL82bixLhSRA=";

  };

  patches = [

    # The updated lua52 src has a radically changed makefile, matching lua53

    ./remove-lua52-special-case.patch

  ];

  # devendor/update the luas to newer patched versions

  postPatch = ''

    (

      set -x

      rm -rf third-party/lua51;    cp -r ${srcOnly lua5_1}     third-party/lua51

      rm -rf third-party/lua52;    cp -r ${srcOnly lua5_2}/src third-party/lua52

      rm -rf third-party/lua53;    cp -r ${srcOnly lua5_3}/src third-party/lua53

      rm -rf third-party/lua54;    cp -r ${srcOnly lua5_4}/src third-party/lua54

      rm -rf third-party/lua55;    cp -r ${srcOnly lua5_5}/src third-party/lua55

      rm -rf third-party/luajit20; cp -r ${srcOnly luajit_2_0} third-party/luajit20

      rm -rf third-party/luajit21; cp -r ${srcOnly luajit_2_1} third-party/luajit21

      chmod -R +w third-party/*

    )

  '';

  build-system = [

    cython

    setuptools

  pythonImportsCheck = [ "lupa" ];

  # this helps us discover new lua versions when bumping, without blocking mass python-updates

  passthru.tests.expected-third-party = runCommand "lupa-expected-third-party" { } ''

    declare -a expected=( lua51 lua52 lua53 lua54 lua55 luajit20 luajit21 )

    declare -a found_paths=( ${finalAttrs.src}/third-party/* )

    declare -a found=("''${found_paths[@]##*/}")

    if [[ "''${found[*]}" != "''${expected[*]}" ]]; then

      echo >&2 "./third-party/ contains unexpected paths!"

      echo >&2 "expected: ''${expected[*]}"

      echo >&2 "found:    ''${found[*]}"

      exit 1

    else

      touch $out

    fi

  '';

  meta = {

    description = "Lua in Python";

    homepage = "https://github.com/scoder/lupa";

diff --git a/setup.py b/setup.py

index 972277e..ec426a0 100644

--- a/setup.py

+++ b/setup.py

@@ -302,8 +302,6 @@ def use_bundled_lua(path, macros):

         os.path.splitext(obj_file)[0] + '.c' if obj_file != 'lj_vm.o' else 'lj_vm.s'

         for obj_file in obj_files

     ]

-    if libname == 'lua52':

-        lua_sources.extend(['lbitlib.c', 'lcorolib.c', 'lctype.c'])

     src_dir = os.path.dirname(makefile)

     ext_libraries = [

         [libname, {