The gzip patch is included in the forthcoming upstream update.

gzip.patch

@@ -1,58 +0,0 @@
-diff --git a/docs/livecd-creator.pod b/docs/livecd-creator.pod
-index 880ae19..e80a119 100644
---- a/docs/livecd-creator.pod
-+++ b/docs/livecd-creator.pod
-@@ -42,8 +42,8 @@ Defines the file system label. The default is based on the configuration name.
- 
- =item --compression-type=COMPRESSOR
- 
--Specify a compressor recognized by mksquashfs. The default is zlib. lzma
--currently requires a custom kernel to produce a functional image. If zlib
-+Specify a compressor recognized by mksquashfs. The default is gzip. lzma
-+currently requires a custom kernel to produce a functional image. If gzip
- is used, the -comp option is not passed to mksquashfs to allow the use of
- older versions of mksquashfs.
- 
-diff --git a/imgcreate/fs.py b/imgcreate/fs.py
-index c5cd18b..554d1b9 100644
---- a/imgcreate/fs.py
-+++ b/imgcreate/fs.py
-@@ -41,8 +41,8 @@ def makedirs(dirname):
-             raise
- 
- def mksquashfs(in_img, out_img, compress_type):
--# Allow zlib to work for older versions of mksquashfs
--    if compress_type == "zlib":
-+# Allow gzip to work for older versions of mksquashfs
-+    if compress_type == "gzip":
-         args = ["/sbin/mksquashfs", in_img, out_img]
-     else:
-         args = ["/sbin/mksquashfs", in_img, out_img, "-comp", compress_type]
-diff --git a/imgcreate/live.py b/imgcreate/live.py
-index 36fef63..f349a1f 100644
---- a/imgcreate/live.py
-+++ b/imgcreate/live.py
-@@ -46,7 +46,7 @@ class LiveImageCreatorBase(LoopImageCreator):
-         """
-         LoopImageCreator.__init__(self, *args)
- 
--        self.compress_type = "zlib"
-+        self.compress_type = "gzip"
-         """mksquashfs compressor to use."""
- 
-         self.skip_compression = False
-diff --git a/tools/livecd-creator b/tools/livecd-creator
-index 79fc944..d1727c5 100755
---- a/tools/livecd-creator
-+++ b/tools/livecd-creator
-@@ -42,8 +42,8 @@ def parse_options(args):
-     imgopt.add_option("-f", "--fslabel", type="string", dest="fs_label",
-                       help="File system label (default based on config name)")
-     imgopt.add_option("", "--compression-type", type="string", dest="compress_type",
--                      help="Compression type recognized by mksquashfs (default zlib, lzma needs custom kernel)",
--                      default="zlib")
-+                      help="Compression type recognized by mksquashfs (default gzip, lzma needs custom kernel)",
-+                      default="gzip")
-     parser.add_option_group(imgopt)
- 
-     # options related to the config of your system