diff --git a/pkgs/os-specific/linux/spl/spl-0.6.0.nix b/pkgs/os-specific/linux/spl/spl-0.6.0.nix
deleted file mode 100644
index c174daad26b5..000000000000
--- a/pkgs/os-specific/linux/spl/spl-0.6.0.nix
+++ /dev/null
@@ -1,24 +0,0 @@
-{ stdenv, fetchgit, kernel, linuxHeaders, perl }:
-
-stdenv.mkDerivation {
-  name = "spl-0.6.0-rc4";
-  src = fetchgit {
-    url = git://github.com/behlendorf/spl.git;
-    rev = "dde6b7b137f56894a457";
-    sha256 = "c402517a647de0c22a69588219aa214f96d1cf9d2f8751b99c5a2795898c726b";
-  };
-
-  patches = [ ./install_prefix.patch ./module_prefix.patch ];
-
-  buildInputs = [ perl kernel linuxHeaders ];
-
-  configureFlags = [ "--with-linux=${kernel}/lib/modules/${kernel.version}/build" 
-                     "--with-linux-obj=${kernel}/lib/modules/${kernel.version}/build" ];
-
-  meta = {
-    description = "Kernel module driver for solaris porting layer (needed by in-kernel zfs)";
-    homepage = http://zfsonlinux.org/;
-    license = "CDDL";
-    platforms = stdenv.lib.platforms.linux;
-  };
-}
diff --git a/pkgs/os-specific/linux/zfs/zfs-0.6.0.nix b/pkgs/os-specific/linux/zfs/zfs-0.6.0.nix
deleted file mode 100644
index 1cc923f39d16..000000000000
--- a/pkgs/os-specific/linux/zfs/zfs-0.6.0.nix
+++ /dev/null
@@ -1,23 +0,0 @@
-{ stdenv, fetchgit, kernel, linuxHeaders, spl, perl, zlib, libuuid }:
-
-stdenv.mkDerivation {
-  name = "zfs-0.6.0-rc4";
-  src = fetchgit {
-    url = git://github.com/behlendorf/zfs.git;
-    rev = "3613204cd7e3ab1ae658";
-    sha256 = "217ca162b1b0178dd2e3acc543d3c0cce3a7be7e884a9118ffa0a84d3cbc73f5";
-  };
-
-  patches = [ ./module_perm_prefix.patch ./mount_zfs_prefix.patch ./kerneldir_path.patch ];
-
-  buildInputs = [ kernel linuxHeaders spl perl zlib libuuid];
-
-  configureFlags = " --with-linux=${kernel}/lib/modules/${kernel.version}/build --with-linux-obj=${kernel}/lib/modules/${kernel.version}/build --with-spl=${spl}/libexec/spl-0.6.0/${kernel.version}";
-
-  meta = {
-    description = "Native ZFS for Linux";
-    homepage = http://zfsonlinux.org/;
-    license = "CDDL";
-    platforms = stdenv.lib.platforms.linux;
-  };
-}