Ok, this finally seems to be working. I ran a bionic livefs ubuntu-core
build with -proposed enabled and now I can confirm that the build pulled
in the core18 assertion and built a core18 image in the end:
https://launchpadlibrarian.net/451484208
This bug was fixed in the package livecd-rootfs - 2.525.35
---
livecd-rootfs (2.525.35) bionic; urgency=medium
* Did not expect the bionic branch being so outdated. Backport support
for fetching core18 model assertions on bionic hosts. This enables build
support for
** Changed in: livecd-rootfs (Ubuntu)
Status: Fix Released => Invalid
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https://bugs.launchpad.net/bugs/1852332
Title:
Bionic builds can't build core18 images
To manage
** Changed in: livecd-rootfs (Ubuntu)
Status: Invalid => Fix Released
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https://bugs.launchpad.net/bugs/1852332
Title:
Bionic builds can't build core18 images
To manage
Hello Łukasz, or anyone else affected,
Accepted livecd-rootfs into bionic-proposed. The package will build now
and be available at https://launchpad.net/ubuntu/+source/livecd-
rootfs/2.525.35 in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See
