depot/third_party/nixpkgs/pkgs/tools/misc/nvimpager/default.nix

{ fetchFromGitHub
, lib, stdenv
, ncurses, neovim, procps
, scdoc, lua51Packages, util-linux
}:

stdenv.mkDerivation rec {
  pname = "nvimpager";
  version = "0.13.0";

  src = fetchFromGitHub {
    owner = "lucc";
    repo = pname;
    rev = "v${version}";
    sha256 = "sha256-Au9rRZMZfU4qHi/ng6JO8FnMpySKDbKzr75SBPY3QiA=";
  };

  buildInputs = [
    ncurses # for tput
    procps # for nvim_get_proc() which uses ps(1)
  ];
  nativeBuildInputs = [ scdoc ];

  makeFlags = [ "PREFIX=$(out)" ];
  buildFlags = [ "nvimpager.configured" "nvimpager.1" ];
  preBuild = ''
    patchShebangs nvimpager
    substituteInPlace nvimpager --replace-fail ':-nvim' ':-${lib.getExe neovim}'
    '';

  doCheck = true;
  nativeCheckInputs = [ lua51Packages.busted util-linux neovim ];
  # filter out one test that fails in the sandbox of nix or with neovim v0.10
  # or on macOS
  preCheck = ''
    checkFlagsArray+=('BUSTED=busted --output TAP --exclude-tags=${"nix,v10" + lib.optionalString stdenv.isDarwin ",mac"}')
  '';

  meta = with lib; {
    description = "Use neovim as pager";
    longDescription = ''
      Use neovim as a pager to view manpages, diffs, etc with nvim's syntax
      highlighting.  Includes a cat mode to print highlighted files to stdout
      and a ansi esc mode to highlight ansi escape sequences in neovim.
    '';
    homepage = "https://github.com/lucc/nvimpager";
    license = licenses.bsd2;
    platforms = platforms.unix;
    maintainers = [ maintainers.lucc ];
    mainProgram = "nvimpager";
  };
}