Public bug reported:
ubuntustudio-default-settings recommends linux-lowlatency thus breaking
ubuntustudio focal image building
$ reverse-depends linux-lowlatency
Reverse-Recommends
* ubuntustudio-lowlatency-settings
Reverse-Depends
* linux-lowlatency-hwe-18.04 [amd64]
* linux-lowlatency-hwe-18.04-edge [amd64]
Packages without architectures listed are reverse-dependencies in:
amd64, arm64, armhf, i386, ppc64el, s390x
Seeded packages in the Ubuntu archive must not depend on the linux kernel.
Installation, and defaultness of a kernel flavour must be handled externally
using livecd-rootfs kernel flavour picking, or some other dynamic configuration.
The above resulted in transitevely linux-lowlatency packages getting
pulled into the ubuntustudio task, without a blacklist. Which means that
ABI encoded packages gain Task: ubuntustudio-desktop, and instead of
only installing/tracking the latest kernel, the ancient
5.4.0-16-lowlatency abi is also installed, and then production of daily
focal isos fails, as there are two lowlatency kernels on the media.
$ reverse-depends linux-lowlatency
Reverse-Recommends
* ubuntustudio-lowlatency-settings
Reverse-Depends
* linux-lowlatency-hwe-18.04 [amd64]
* linux-lowlatency-hwe-18.04-edge [amd64]
Packages without architectures listed are reverse-dependencies in:
amd64, arm64, armhf, i386, ppc64el, s390x
$ apt-cache show -a linux*lowlatency | grep -e Package -e Task
...
Package: linux-headers-5.4.0-26-lowlatency
Task: ubuntustudio-desktop
...
If the dependency is desired, that is ok, as long as the abi encoded
packages are blacklisted in the seed similar to the !linux-image-*
stanza.
** Affects: ubuntustudio-default-settings (Ubuntu)
Importance: Undecided
Status: New
** Affects: ubuntustudio-meta (Ubuntu)
Importance: Undecided
Status: New
** Also affects: ubuntustudio-meta (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1884915
Title:
ubuntustudio-default-settings recommends linux-lowlatency thus
breaking ubuntustudio focal image building
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