libev: port to mkDerivation

pkgs/development/libraries/libev/default.nix

@@ -1,25 +1,17 @@
-a :  
+{ stdenv, fetchurl }:
-let 
-  s = import ./src-for-default.nix;
-  buildInputs = with a; [
-    
-  ];
-in
-rec {
-  src = a.fetchUrlFromSrcInfo s;
-
-  inherit (s) name;
-  inherit buildInputs;
-  configureFlags = [];
-
-  /* doConfigure should be removed if not needed */
-  phaseNames = ["doConfigure" "doMakeInstall"];
 
+stdenv.mkDerivation rec {
+  name = "libev-${version}";
+  version="4.15";
+  src = fetchurl {
+    url = "http://dist.schmorp.de/libev/Attic/${name}.tar.gz";
+    sha256 = "1svgc1hq4i5zsw4i02sf7xb4pk2d8kpvc1gdrd856vsmffh47pdj";
+  };
   meta = {
     description = "An event loop library remotely similar to libevent";
     maintainers = [
-      a.lib.maintainers.raskin
+      stdenv.lib.maintainers.raskin
     ];
-    platforms = a.lib.platforms.all;
+    platforms = stdenv.lib.platforms.all;
   };
 }

pkgs/development/libraries/libev/src-for-default.nix

@@ -1,9 +0,0 @@
-rec {
-   version="4.15";
-   name="libev-4.15";
-   hash="1svgc1hq4i5zsw4i02sf7xb4pk2d8kpvc1gdrd856vsmffh47pdj";
-   url="http://dist.schmorp.de/libev/Attic/libev-${version}.tar.gz";
-   advertisedUrl="http://dist.schmorp.de/libev/Attic/libev-4.15.tar.gz";
-  
-  
-}

pkgs/development/libraries/libev/src-info-for-default.nix

@@ -1,5 +0,0 @@
-{
-  downloadPage = "http://dist.schmorp.de/libev/Attic/?M=D";
-  sourceRegexp = "(^|/)libev-.*[.]tar[.]gz";
-  baseName = "libev";
-}

pkgs/top-level/all-packages.nix

@@ -6193,7 +6193,7 @@ let
 
   libechonest = callPackage ../development/libraries/libechonest { };
 
-  libev = builderDefsPackage ../development/libraries/libev { };
+  libev = callPackage ../development/libraries/libev { };
 
   libevent14 = callPackage ../development/libraries/libevent/1.4.nix { };
   libevent = callPackage ../development/libraries/libevent { };