Imported 2.575

No reason for CPC update specified.

debian/changelog

@@ -1,3 +1,10 @@
+livecd-rootfs (2.575) disco; urgency=medium
+
+  [ Robert C Jennings ]
+  * Remove duplicate snap listings in ubuntu-cpc qcow manifest
+
+ -- Mathieu Trudel-Lapierre <cyphermox@ubuntu.com>  Mon, 01 Apr 2019 14:29:16 -0400
+
 livecd-rootfs (2.574) disco; urgency=medium
 
   * Make serial-subiquity@ use the same codepath as tty1 subiquity.

live-build/ubuntu-cpc/hooks.d/base/disk-image-uefi.binary

@@ -93,11 +93,14 @@ install_grub() {
             ;;
     esac
 
-    # This call to generate the package manifest is added here to capture 
+    # This call to rewrite the debian package manifest is added here to capture
     # grub-efi packages that otherwise would not make it into the base
     # manifest. filesystem.packages is moved into place via symlinking to
     # livecd.ubuntu-cpc.manifest by live-build/auto/build after lb_binary runs
-    create_manifest "mountpoint" "binary/boot/filesystem.packages"
+    # and at that time snaps are added to the manifest (create-manifest is
+    # not called here as it calls snap-seed-parse, resulting in duplicate
+    # snap listings)
+    chroot mountpoint dpkg-query -W > binary/boot/filesystem.packages
 
     chroot mountpoint grub-install "${loop_device}" \
         --boot-directory=/boot \