diff --git a/pkgs/os-specific/linux/alsa/library/default.nix b/pkgs/os-specific/linux/alsa/library/default.nix
index 32df29d722f..6ab8143c7ab 100644
--- a/pkgs/os-specific/linux/alsa/library/default.nix
+++ b/pkgs/os-specific/linux/alsa/library/default.nix
@@ -6,4 +6,8 @@ stdenv.mkDerivation {
     url = ftp://ftp.alsa-project.org/pub/lib/alsa-lib-1.0.14.tar.bz2;
 	sha256 = "18xhm53adgss20jnva2nfl9gk46kb5an6ah820pazqn0ykd97rh1";
   };
+
+  meta = {
+	  homepage = http://www.alsa-project.org;
+  };
 }
diff --git a/pkgs/os-specific/linux/alsa/utils/default.nix b/pkgs/os-specific/linux/alsa/utils/default.nix
index ccc49432566..658d8d8e9f7 100644
--- a/pkgs/os-specific/linux/alsa/utils/default.nix
+++ b/pkgs/os-specific/linux/alsa/utils/default.nix
@@ -7,4 +7,8 @@ stdenv.mkDerivation {
     sha256 = "1jx5bwa8abx7aih4lymx4bnrmyip2yb0rp1mza97wpni1q7n6z9h";
   };
   buildInputs = [alsaLib ncurses gettext];
+
+  meta = {
+	  homepage = http://www.alsa-project.org;
+  };
 }
diff --git a/pkgs/tools/archivers/unzip/default.nix b/pkgs/tools/archivers/unzip/default.nix
index e19e564a421..a690a8e7163 100644
--- a/pkgs/tools/archivers/unzip/default.nix
+++ b/pkgs/tools/archivers/unzip/default.nix
@@ -7,4 +7,8 @@ stdenv.mkDerivation {
     url = http://nix.cs.uu.nl/dist/tarballs/unzip552.tar.gz;
     md5 = "9d23919999d6eac9217d1f41472034a9";
   };
+
+  meta = {
+	  homepage = http://www.info-zip.org;
+  };
 }
diff --git a/pkgs/tools/archivers/zip/default.nix b/pkgs/tools/archivers/zip/default.nix
index f3fb96ae1e5..9498bf089ff 100644
--- a/pkgs/tools/archivers/zip/default.nix
+++ b/pkgs/tools/archivers/zip/default.nix
@@ -5,4 +5,8 @@
     url = ftp://ftp.info-zip.org/pub/infozip/src/zip232.tgz;
     md5 = "8a4da4460386e324debe97f3b7fe4d96";
   };
+
+  meta = {
+    homepage = http://www.info-zip.org;
+  };
 }
diff --git a/pkgs/tools/compression/bzip2/default.nix b/pkgs/tools/compression/bzip2/default.nix
index 1a5dd61803a..9ed3e941bf6 100644
--- a/pkgs/tools/compression/bzip2/default.nix
+++ b/pkgs/tools/compression/bzip2/default.nix
@@ -11,4 +11,7 @@ stdenv.mkDerivation {
 
   sharedLibrary =
     !stdenv.isDarwin && !(stdenv ? isDietLibC) && stdenv.system != "i686-cygwin";
+  meta = {
+    homepage = http://www.bzip.org;
+  };
 }
diff --git a/pkgs/tools/compression/zdelta/default.nix b/pkgs/tools/compression/zdelta/default.nix
index 8bd6d8a0e16..a07deac4148 100644
--- a/pkgs/tools/compression/zdelta/default.nix
+++ b/pkgs/tools/compression/zdelta/default.nix
@@ -1,10 +1,14 @@
 {stdenv, fetchurl}:
 
-stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   name = "zdelta-2.1";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://cis.poly.edu/zdelta/downloads/zdelta-2.1.tar.gz;
+    url = "${meta.homepage}/downloads/${name}.tar.gz";
     md5 = "c69583a64f42f69a39e297d0d27d77e5";
   };
+
+  meta = {
+	  homepage = http://cis.poly.edu/zdelta;
+  };
 }