Add package xbrightness

xbrightness allows controlling by software the screen gamma and
brigthness settings for individual color channels.

pkgs/tools/X11/xbrightness/builder.sh

@@ -0,0 +1,16 @@
+source $stdenv/setup
+
+configurePhase() {
+    xmkmf
+}
+
+buildPhase() {
+    make $makeFlags
+}
+
+installPhase() {
+    make install BINDIR=$out/bin
+    make install.man MANPATH=$out/share/man
+}
+
+genericBuild

pkgs/tools/X11/xbrightness/default.nix

@@ -0,0 +1,27 @@
+{ stdenv, fetchurl, x11, xlibs }:
+
+stdenv.mkDerivation {
+
+  name = "xbrightness-0.3-mika-akk";
+  builder = ./builder.sh;
+  src = fetchurl {
+    url = http://shallowsky.com/software/xbrightness/xbrightness-0.3-mika-akk.tar.gz;
+    sha256 = "2564dbd393544657cdabe4cbf535d9cfb9abe8edddb1b8cdb1ed4d12f358626e";
+  };
+
+  buildInputs = [
+    xlibs.imake
+    xlibs.libX11
+    xlibs.libXaw
+    xlibs.libXext
+    xlibs.libXmu
+    xlibs.libXpm
+    xlibs.libXxf86vm
+  ];
+
+  meta = {
+    description = "X11 brigthness and gamma software control";
+    homepage = http://shallowsky.com/software;
+    license = stdenv.lib.licenses.mit;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -2808,6 +2808,8 @@ let
 
   xarchiver = callPackage ../tools/archivers/xarchiver { };
 
+  xbrightness = callPackage ../tools/X11/xbrightness { };
+
   xcruiser = callPackage ../applications/misc/xcruiser { };
 
   unarj = callPackage ../tools/archivers/unarj { };