[FFe] WSL systemd experimental support

[Didier Roche-Tolomelli]

WSL on Ubuntu 22.04 has a strecth goal to ship systemd experimental support.
This relies on 3 changes:
- a script started up on WSL VM boot, which is shipped as part of this package to start systemd in its own namespace.
- a change in the ubuntu Windows launcher executable, which is then looking for the boot= parameter in wsl.conf and if systemd experimental support is enabled, starts any new commands into that systemd namespace
- an option in our OOBE installer, under advanced menu, disabled by default, to change the boot= parameter in wsl.conf. The feature will be labeled as experimental.

So, this experimental support won’t be enabled by default and paved the way to have a discussion with Microsoft for potential limitations and how we can get this to a wider audience in the long term.
This feature is long-awaited for WSL users.

[Łukasz Zemczak (sil2100)]

We're barely a few days after FF, so this still sounds sensible for 22.04 - especially if this is not enabled by default. So FFe approved.

[Launchpad Janitor (janitor)]

This bug was fixed in the package wsl-setup - 0.2

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wsl-setup (0.2) jammy; urgency=medium

  * Systemd experimental support (LP: #1962556)

 -- Didier Roche <email address hidden> Thu, 17 Mar 2022 16:08:44 +0100