Public bug reported: Despite being out of standard support, Ubuntu 20.04 LTS Focal Fossa remains an important release under WSL. Data insights show that around 10% of the Monthly Active User base of Ubuntu releases on WSL remain on 20.04. The `wsl-setup` package is critical for building usable WSL images in the new tar-based format that no longer requires or depends on MS Store. Building images of Focal in this new format allows for more adoption of Ubuntu on WSL on corporate environments, where MS Store is usually restricted or inaccessible, and that feeds into the adoption of Ubuntu Pro, given that only Pro subscribers will be running Focal due EOL. Thus enabling Focal in the new image format is strategical for Ubuntu on WSL.
[Impact] * `wsl-setup` is exclusive to Ubuntu WSL, so no other Ubuntu product or experience is affected. * The mere acceptance of wsl-setup into Focal is harmless because it will be a new package, only installable explicitly, not via upgrades. * Current Ubuntu 20.04 on WSL instances that could get `wsl-setup` installed by `apt install wsl-setup` won't be functionally affected, as no code will be executed as part of the upgrade or later. systemd overrides shipped within this package are already injected into the rootfs via the Windows binary that launches the distro instance during the first run, so they will be just redundant. * Once we start building new images (in the new format) with the planned version of wsl-setup already seeded, then we'll have measurable impacts of the changes herein proposed, but those would only affect new installations. The script and systemd hooks herein proposed are the same present in Jammy and later, thus those releases will be in feature parity in terms of first boot experience. [Test Plan] - Requires Windows 10 or 11 and WSL. Test 1. Check systemd overrides * Install a fresh instance of Ubuntu 20.04 on WSL: `wsl.exe --install -d Ubuntu-20.04` * Once the setup finishes, verify the system status with `systemctl --failed` It should print 0 failed units: u@DESKTOP-551PQ9O:~$ systemctl --failed UNIT LOAD ACTIVE SUB DESCRIPTION 0 loaded units listed. * Exit (Ctrl+D), shutdown WSL and restart the instance: `wsl.exe --shutdown; wsl.exe -d Ubuntu-20.04` * Once the shell is up and running, verify the system status again with `systemctl --failed` It should print 0 failed units. * Enable '-proposed' and apply selective upgrading from it, as described in https://wiki.ubuntu.com/Testing/EnableProposed. * Install wsl-setup: `apt install -y wsl-setup/focal-proposed`. 0 loaded units listed. * Exit (Ctrl+D), shutdown WSL and restart the instance: `wsl.exe --shutdown; wsl.exe -d Ubuntu-20.04` * Once the shell is up and running, verify the system status once more with `systemctl --failed` It should print 0 failed units. [Where problems could occur] Existing users manually installing `wsl-setup` could find insufficient systemd unit overrides leading to a degraded output from `systemctl --status`. Even under that condition, most users wouldn't notice any issue in practice. Yet, there is no practical reason for users to install this package today. Subsequent work is needed to patch livecd- rootfs and the ubuntu seed for focal to build focal in the new image format and thus leverage those changes in wsl-setup. [Other Info] * `wsl-setup` is already in main for Jammy and later, but never released into Focal. ** Affects: wsl-setup (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2115426 Title: [SRU] Backport wsl-setup as new packge for Focal To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/wsl-setup/+bug/2115426/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
