fix build issues #219

Job	Run time
live-iso (x86_64, flagship/flagship-live)	7m 30s
image (x86_64, base/base-disk)	7m 32s
live-iso (x86_64, gnome/gnome-live)	7m 31s
image (x86_64, flagship/base-disk)	7m 32s
live-iso (x86_64, kde/kde-live)	4s
image (x86_64, gnome/base-disk)	7m 34s
live-iso (x86_64, xfce/xfce-live)	7m 31s
image (x86_64, kde/base-disk)	7m 31s
live-iso (aarch64, flagship/flagship-live)	6s
image (x86_64, xfce/base-disk)	7m 33s
live-iso (aarch64, gnome/gnome-live)	1s
image (x86_64, flagship/flagship-chromebook)	2m 22s
live-iso (aarch64, kde/kde-live)	1s
image (x86_64, gnome/gnome-chromebook)	3m 10s
live-iso (aarch64, xfce/xfce-live)	1s
image (x86_64, kde/kde-chromebook)	2m 4s
image (x86_64, xfce/xfce-chromebook)	2m 17s
image (aarch64, base/base-disk)	7m 29s
image (aarch64, flagship/base-disk)	7m 23s
image (aarch64, gnome/base-disk)	7m 26s
image (aarch64, kde/base-disk)	7m 26s
image (aarch64, xfce/base-disk)	3m 48s
image (aarch64, flagship/flagship-chromebook)	3m 14s
image (aarch64, gnome/gnome-chromebook)	3m 13s
image (aarch64, kde/kde-chromebook)	3m 6s
image (aarch64, xfce/xfce-chromebook)	15s
push-image	1s
	1h 53m 41s

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