{ stdenv
, lib
, fetchurl
, fetchFromGitHub
, cmake
, capnproto
, sqlite
, boost
, zlib
, rapidjson
, pandoc
}:
let
  js.vue = fetchurl {
    url = "https://cdnjs.cloudflare.com/ajax/libs/vue/2.6.12/vue.min.js";
    sha256 = "1hm5kci2g6n5ikrvp1kpkkdzimjgylv1xicg2vnkbvd9rb56qa99";
  };
  js.ansi_up = fetchurl {
    url = "https://raw.githubusercontent.com/drudru/ansi_up/v4.0.4/ansi_up.js";
    sha256 = "1dx8wn38ds8d01kkih26fx1yrisg3kpz61qynjr4zil03ap0hrlr";
  };
  js.Chart = fetchurl {
    url = "https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.2/Chart.min.js";
    sha256 = "1jh4h12qchsba03dx03mrvs4r8g9qfjn56xm56jqzgqf7r209xq9";
  };
in stdenv.mkDerivation rec {
  pname = "laminar";
  version = "1.2";
  outputs = [ "out" "doc" ];
  src = fetchFromGitHub {
    owner = "ohwgiles";
    repo = "laminar";
    rev = version;
    sha256 = "sha256-PLnfiWpelgKhs4FNry60sm6/QdhYs76FnZ/ZcRmb4Ok=";
  };
  patches = [ ./patches/no-network.patch ];

  # We need both binary from "capnproto" and library files.
  nativeBuildInputs = [ cmake pandoc capnproto ];
  buildInputs = [ capnproto sqlite boost zlib rapidjson ];
  cmakeFlags = [ "-DLAMINAR_VERSION=${version}" ];

  preBuild = ''
    mkdir -p js css
    cp  ${js.vue}         js/vue.min.js
    cp  ${js.ansi_up}     js/ansi_up.js
    cp  ${js.Chart}       js/Chart.min.js
  '';

  postInstall = ''
    mv $out/usr/share/* $out/share/
    rmdir $out/usr/share $out/usr

    mkdir -p $out/share/doc/laminar
    pandoc -s ../UserManual.md -o $out/share/doc/laminar/UserManual.html
    rm -rf $out/lib # remove upstream systemd units
    rm -rf $out/etc # remove upstream config file
  '';

  meta = with lib; {
    description = "Lightweight and modular continuous integration service";
    homepage = "https://laminar.ohwg.net";
    license = licenses.gpl3Plus;
    platforms = platforms.linux;
    maintainers = with maintainers; [ kaction maralorn ];
  };
}