oils-for-unix-from-source/package.nix

{
  lib,
  stdenv,
  fetchFromGitHub,
  callPackage,
  symlinkJoin,
  pkg-config,
  ninja,
  git,
  re2c,
  cmark,
  which,
  time,
  readline,
  ncurses,
  zlib,
  libffi,
}:

let
  version = "0.37.0";

  src = fetchFromGitHub {
    owner = "oils-for-unix";
    repo = "oils";
    rev = "release/${version}";
    hash = "sha256-d2i2P8ZiGb+FYzZIzs0pY2gIRQGGuenLbxrGhafVxVc=";
  };

  wedges = callPackage ./wedges.nix { };

in
stdenv.mkDerivation (finalAttrs: {
  pname = "oils-for-unix";
  inherit version src;

  nativeBuildInputs = [
    pkg-config
    ninja
    git
    re2c
    cmark
    which
    time
    wedges.python2Wedge
    wedges.python3Wedge
  ];

  buildInputs = [
    readline
    ncurses
    zlib
    libffi
  ];

  postPatch = ''
    patchShebangs .

    substituteInPlace build/dynamic-deps.sh \
      --replace-quiet '/usr/bin/env' "$(command -v env)"

    substituteInPlace pyext/posixmodule.c \
      --replace-quiet '_PyVerify_fd(fd)' '1'

    substituteInPlace doctools/cmark.py \
      --replace-quiet "raise AssertionError('bin/cmark not found')" \
        "cmark_path = '${cmark}/bin/cmark'"
  '';

  configurePhase = ''
    runHook preConfigure

    ./configure \
      --datarootdir=$out \
      --with-readline \
      --readline=${wedges.readline-all}

    runHook postConfigure
  '';

  buildPhase = ''
    runHook preBuild

    export PATH="${wedges.python2Wedge}/bin:${wedges.python3Wedge}/bin:$PATH"
    export PATH="${wedges.mypyWedge}/bin:$PATH"
    export PYTHONPATH="${wedges.mypyWedge}/lib/python3.10/site-packages:.:vendor/"
    export LD_LIBRARY_PATH="${wedges.python2Wedge}/lib:${wedges.python3Wedge}/lib:''${LD_LIBRARY_PATH:-}"

    build/py.sh configure-for-dev
    build/stamp.sh write-git-commit
    build/py.sh py-source
    build/py.sh py-extensions
    build/doc.sh all-ref
    ./NINJA-config.sh
    ninja _bin/cxx-opt/oils-for-unix

    runHook postBuild
  '';

  installPhase = ''
    runHook preInstall

    mkdir -p $out/bin
    install -m755 _bin/cxx-opt/oils-for-unix $out/bin/oils-for-unix
    ln -s oils-for-unix $out/bin/osh
    ln -s oils-for-unix $out/bin/ysh

    runHook postInstall
  '';

  env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-error=incompatible-function-pointer-types";

  meta = {
    description = "Oils is our upgrade path from bash to a better language and runtime";
    homepage = "https://www.oilshell.org/";
    license = lib.licenses.asl20;
    platforms = lib.platforms.unix;
    mainProgram = "osh";
  };

  passthru = {
    inherit wedges;

    withSrc = newSrc: finalAttrs.finalPackage.overrideAttrs { src = newSrc; };
  }
  // (
    let
      mkShell =
        shellName:
        symlinkJoin {
          name = "oils-for-unix-${shellName}-${version}";
          paths = [ finalAttrs.finalPackage ];
          passthru.shellPath = "/bin/${shellName}";
          meta = finalAttrs.meta // {
            mainProgram = shellName;
          };
        };
    in
    {
      osh = mkShell "osh";
      ysh = mkShell "ysh";
    }
  );
})