{ lib, mkDerivation, perl }:

let inherit (lib) licenses maintainers platforms; in

{ self, srcs, patches }:

args:

let
  inherit (args) pname;
  version = args.version or srcs.${pname}.version;
  src = args.src or srcs.${pname}.src;
in

mkDerivation (args // {
  inherit pname version src;
  patches = args.patches or patches.${pname} or [];

  nativeBuildInputs = (args.nativeBuildInputs or []) ++ [ perl self.qmake ];
  propagatedBuildInputs = args.qtInputs ++ (args.propagatedBuildInputs or []);

  outputs = args.outputs or [ "out" "dev" ];
  setOutputFlags = args.setOutputFlags or false;

  preHook = ''
    . ${./hooks/move-qt-dev-tools.sh}
    . ${./hooks/fix-qt-builtin-paths.sh}
  '';

  preConfigure = ''
    ${args.preConfigure or ""}

    fixQtBuiltinPaths . '*.pr?'
  '' + lib.optionalString (builtins.compareVersions "5.15.0" version <= 0)
  # Note: We use ${version%%-*} to remove any tag from the end of the version
  # string. Version tags are added by Nixpkgs maintainers and not reflected in
  # the source version.
  ''
    if [[ -z "$dontCheckQtModuleVersion" ]] \
        && grep -q '^MODULE_VERSION' .qmake.conf 2>/dev/null \
        && ! grep -q -F "''${version%%-*}" .qmake.conf 2>/dev/null
    then
      echo >&2 "error: could not find version ''${version%%-*} in .qmake.conf"
      echo >&2 "hint: check .qmake.conf and update the package version in Nixpkgs"
      exit 1
    fi

    if [[ -z "$dontSyncQt" && -f sync.profile ]]; then
      syncqt.pl -version "''${version%%-*}"
    fi
  '';

  dontWrapQtApps = args.dontWrapQtApps or true;

  postFixup = ''
    if [ -d "''${!outputDev}/lib/pkgconfig" ]; then
        find "''${!outputDev}/lib/pkgconfig" -name '*.pc' | while read pc; do
            sed -i "$pc" \
                -e "/^prefix=/ c prefix=''${!outputLib}" \
                -e "/^exec_prefix=/ c exec_prefix=''${!outputBin}" \
                -e "/^includedir=/ c includedir=''${!outputDev}/include"
        done
    fi

    moveQtDevTools

    ${args.postFixup or ""}
  '';

  meta = {
    homepage = "http://www.qt.io";
    description = "A cross-platform application framework for C++";
    license = with licenses; [ fdl13 gpl2 lgpl21 lgpl3 ];
    maintainers = with maintainers; [ qknight ttuegel periklis bkchr ];
    platforms = platforms.unix;
  } // (args.meta or {});
})