New hdapsd module

pkgs/os-specific/linux/hdapsd/default.nix

@@ -2,13 +2,15 @@
 
 let version = "20141203"; in
 stdenv.mkDerivation rec {
-  name = "ldapsd-"+version;
+  name = "hdapsd-"+version;
 
   src = fetchurl {
     url = "https://github.com/evgeni/hdapsd/releases/download/${version}/hdapsd-${version}.tar.gz";
     sha256 = "0ppgrfabd0ivx9hyny3c3rv4rphjyxcdsd5svx5pgfai49mxnl36";
   };
 
+  postInstall = builtins.readFile ./postInstall.sh;
+
   meta = with stdenv.lib;
     { description = "Hard Drive Active Protection System Daemon";
       hompage = "http://hdaps.sf.net/";
@@ -16,4 +18,4 @@ stdenv.mkDerivation rec {
       platforms = platforms.linux;
       maintainers = [ maintainers.ehmry ];
     };
-}
+}

pkgs/os-specific/linux/hdapsd/postInstall.sh

@@ -0,0 +1,7 @@
+mkdir -p $out/lib/udev/rules.d $out/lib/systemd/system
+cp misc/hdapsd.rules $out/lib/udev/rules.d
+SBIN_REWRITE="s|@sbindir@|$out/bin|g"
+for i in misc/*.service.in
+do sed $SBIN_REWRITE "$i" > "$out/lib/systemd/system/$(basename ${i%.in})"
+done
+