added alock package

lib/maintainers.nix

@@ -50,6 +50,7 @@
   ertes = "Ertugrul Söylemez <ertesx@gmx.de>";
   falsifian = "James Cook <james.cook@utoronto.ca>";
   flosse = "Markus Kohlhase <mail@markus-kohlhase.de>";
+  ftrvxmtrx = "Siarhei Zirukin <ftrvxmtrx@gmail.com>";
   funfunctor = "Edward O'Callaghan <eocallaghan@alterapraxis.com>";
   fuuzetsu = "Mateusz Kowalczyk <fuuzetsu@fuuzetsu.co.uk>";
   gal_bolle = "Florent Becker <florent.becker@ens-lyon.org>";

pkgs/misc/screensavers/alock/default.nix

@@ -0,0 +1,41 @@
+{ stdenv, fetchgit, pkgconfig, autoconf, automake
+, libX11, pam, libgcrypt, libXrender, imlib2 }:
+
+stdenv.mkDerivation rec {
+  date = "20140724";
+  name = "alock-${date}";
+
+  src = fetchgit {
+    url = https://github.com/Arkq/alock;
+    rev = "928ae09a85627570b7f6986fe161b71327405fc0";
+    sha256 = "0z605w2cf0pc988qq931b2zis6dqavm0wcjfdmr6q4vamvinjfv0";
+  };
+
+  preConfigure = "autoreconf -fvi";
+  configureFlags = [
+    "--enable-pam"
+    "--enable-hash"
+    "--enable-xrender"
+    "--enable-imlib2"
+  ];
+  buildInputs = [
+    pkgconfig autoconf automake libX11
+    pam libgcrypt libXrender imlib2
+  ];
+
+  meta = {
+    homepage = https://github.com/Arkq/alock;
+    description = "Simple screen lock application for X server";
+    longDescription = ''
+      alock locks the X server until the user enters a password
+      via the keyboard. If the authentification was successful
+      the X server is unlocked and the user can continue to work.
+
+      alock does not provide any fancy animations like xlock or
+      xscreensaver and never will. Its just for locking the current
+      X session.
+    '';
+    platforms = with stdenv.lib.platforms; allBut cygwin;
+    maintainers = stdenv.lib.maintainers.ftrvxmtrx;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -8378,6 +8378,8 @@ let
 
   alchemy = callPackage ../applications/graphics/alchemy { };
 
+  alock = callPackage ../misc/screensavers/alock { };
+
   ams-lv2 = callPackage ../applications/audio/ams-lv2 { };
 
   amsn = callPackage ../applications/networking/instant-messengers/amsn { };