depot/third_party/nixpkgs/pkgs/os-specific/linux/minimal-bootstrap/gnugrep/default.nix

{ lib
, fetchurl
, bash
, tinycc
, gnumake
}:
let
  pname = "gnugrep";
  version = "2.4";

  src = fetchurl {
    url = "mirror://gnu/grep/grep-${version}.tar.gz";
    sha256 = "05iayw5sfclc476vpviz67hdy03na0pz2kb5csa50232nfx34853";
  };

  # Thanks to the live-bootstrap project!
  # See https://github.com/fosslinux/live-bootstrap/blob/1bc4296091c51f53a5598050c8956d16e945b0f5/sysa/grep-2.4
  makefile = fetchurl {
    url = "https://github.com/fosslinux/live-bootstrap/raw/1bc4296091c51f53a5598050c8956d16e945b0f5/sysa/grep-2.4/mk/main.mk";
    sha256 = "08an9ljlqry3p15w28hahm6swnd3jxizsd2188przvvsj093j91k";
  };
in
bash.runCommand "${pname}-${version}" {
  inherit pname version;

  nativeBuildInputs = [
    tinycc.compiler
    gnumake
  ];

  passthru.tests.get-version = result:
    bash.runCommand "${pname}-get-version-${version}" {} ''
      ${result}/bin/grep --version
      mkdir ''${out}
    '';

  meta = with lib; {
    description = "GNU implementation of the Unix grep command";
    homepage = "https://www.gnu.org/software/grep";
    license = licenses.gpl3Plus;
    maintainers = teams.minimal-bootstrap.members;
    mainProgram = "grep";
    platforms = platforms.unix;
  };
} ''
  # Unpack
  ungz --file ${src} --output grep.tar
  untar --file grep.tar
  rm grep.tar
  cd grep-${version}

  # Configure
  cp ${makefile} Makefile

  # Build
  make CC="tcc -B ${tinycc.libs}/lib"

  # Install
  make install PREFIX=$out
''