diff --git a/pkgs/applications/version-management/darcs/darcs-2.nix b/pkgs/applications/version-management/darcs/darcs-2.nix
index dd54bfa112b..c399c523f89 100644
--- a/pkgs/applications/version-management/darcs/darcs-2.nix
+++ b/pkgs/applications/version-management/darcs/darcs-2.nix
@@ -1,16 +1,20 @@
-{cabal, html, mtl, parsec, regexCompat, curl, haskeline, hashedStorage} :
+{cabal, html, mtl, parsec, regexCompat, curl, haskeline, hashedStorage, zlib} :
 
 cabal.mkDerivation (self : {
   pname = "darcs";
   name = self.fname;
-  version = "2.3.1";
-  sha256 = "14821bb2db4975cb4db2c5cc4f085069b936da591b7b71592befc9e07f17d214";
+  version = "2.4.1";
+  sha256 = "6ac0e84d2eca160e6e33755679dfb185d9b5f9f5bdc43f99db326210aabbc4aa";
 
-  extraBuildInputs = [html parsec regexCompat curl haskeline hashedStorage];
+  extraBuildInputs = [
+    html parsec regexCompat curl haskeline hashedStorage zlib
+  ];
 
   meta = {
     homepage = http://darcs.net/;
     description = "Patch-based version management system";
+    license = "GPL";
+    maintainers = [self.stdenv.lib.maintainers.andres];
   };
 
 })
diff --git a/pkgs/development/libraries/haskell/hashed-storage/default.nix b/pkgs/development/libraries/haskell/hashed-storage/default.nix
index de189369772..ff89b3b8f10 100644
--- a/pkgs/development/libraries/haskell/hashed-storage/default.nix
+++ b/pkgs/development/libraries/haskell/hashed-storage/default.nix
@@ -1,12 +1,13 @@
-{cabal, mtl, zlib, mmap}:
+{cabal, mtl, zlib, mmap, binary, dataenc}:
 
 cabal.mkDerivation (self : {
   pname = "hashed-storage";
-  version = "0.3.8";
-  sha256 = "1f379dcb00a56c0b330eeabb1f069ef294bcf1f3dc18980e93b8b228e577fdb1";
-  propagatedBuildInputs = [mtl zlib mmap];
+  version = "0.4.11";
+  sha256 = "c719f9b86c5a517324ce3448fcb4b6377ccbfa085268b396bec47b8bbcfbde1b";
+  propagatedBuildInputs = [mtl zlib mmap binary dataenc];
   meta = {
     description = "Hashed file storage support code";
+    maintainers = [self.stdenv.lib.maintainers.andres];
   };
 })  
 
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 425b6754a11..c94ee35b784 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -261,7 +261,7 @@ rec {
   };
 
   hashedStorage = import ../development/libraries/haskell/hashed-storage {
-    inherit cabal mtl zlib mmap;
+    inherit cabal mtl zlib mmap binary dataenc;
   };
 
   haskeline = import ../development/libraries/haskell/haskeline {
@@ -940,6 +940,7 @@ rec {
 
   darcs = import ../applications/version-management/darcs/darcs-2.nix {
     inherit cabal html mtl parsec regexCompat haskeline hashedStorage;
+    zlib = zlib0520;
     inherit (pkgs) curl;
   };
 
diff --git a/pkgs/top-level/release.nix b/pkgs/top-level/release.nix
index 6e6a0a12df9..a0a33abbea4 100644
--- a/pkgs/top-level/release.nix
+++ b/pkgs/top-level/release.nix
@@ -423,11 +423,13 @@ with (import ./release-lib.nix);
   };
 
   haskellPackages_ghc6121 = {
+    darcs = ghcSupported;
     ghc = ghcSupported;
     haskellPlatform2010100 = linux;
   };
 
   haskellPackages_ghc6122 = {
+    darcs = ghcSupported;
     ghc = ghcSupported;
     haskellPlatform2010100 = linux;
   };