redshift: fix dependencies, make configurable

pkgs/applications/misc/redshift/default.nix

@@ -1,7 +1,16 @@
-{ fetchurl, stdenv, gettext, geoclue, intltool, makeWrapper
+{ fetchurl, stdenv, gettext, intltool, pkgconfig, makeWrapper
-, pkgconfig , python, pygobject3, pyxdg }:
+, geoclue, python, pygobject3, pyxdg
+, libdrm, libX11, libxcb, libXxf86vm
+, guiSupport ? true
+, drmSupport ? true
+, randrSupport ? true
+, vidModeSupport ? true
+}:
 
-let version = "1.10"; in
+let
+  version = "1.10";
+  mkFlag = flag: name: if flag then "--enable-${name}" else "--disable-${name}";
+in
 stdenv.mkDerivation {
   name = "redshift-${version}";
   src = fetchurl {
@@ -9,19 +18,29 @@ stdenv.mkDerivation {
     url = "https://github.com/jonls/redshift/releases/download/v${version}/redshift-${version}.tar.xz";
   };
 
-  buildInputs = [
+  buildInputs = [ geoclue ]
-    gettext intltool makeWrapper pkgconfig python pygobject3 pyxdg
+    ++ stdenv.lib.optional guiSupport [ python pygobject3 pyxdg ]
+    ++ stdenv.lib.optional drmSupport [ libdrm ]
+    ++ stdenv.lib.optional randrSupport [ libxcb ]
+    ++ stdenv.lib.optional vidModeSupport [ libX11 libXxf86vm ];
+  nativeBuildInputs = [ gettext intltool makeWrapper pkgconfig ];
+
+  configureFlags = [
+    (mkFlag guiSupport "gui")
+    (mkFlag drmSupport "drm")
+    (mkFlag randrSupport "randr")
+    (mkFlag vidModeSupport "vidmode")
   ];
 
-  preInstall = ''
+  preInstall = stdenv.lib.optionalString guiSupport ''
     substituteInPlace src/redshift-gtk/redshift-gtk python \
       --replace "/usr/bin/env python3" "${python}/bin/${python.executable}"
   '';
-/*
+
-  postInstall = ''
+  postInstall = stdenv.lib.optionalString guiSupport ''
-    wrapProgram "$out/bin/redshift-gtk" --prefix PYTHONPATH : $PYTHONPATH
+    wrapProgram "$out/bin/redshift-gtk" --prefix PYTHONPATH : "$PYTHONPATH"
   '';
-*/
+
   meta = with stdenv.lib; {
     inherit version;
     description = "Gradually change screen color temperature";