How to remove all the firefox (and other) cruft in /snap etc.?

[Jeffrey Walton]

On Fri, Dec 22, 2023 at 11:08 AM Grizzlly via ubuntu-users
<ubuntu-users at lists.ubuntu.com> wrote:
>
> Friday, December 22, 2023  at 13:54, Chris Green wrote:
> Re: How to remove all the firefox ( (at least in part)
>
> >Finally 'snap remove --purge snapd' (yes, it can remove itself!) after
> >which 'apt purge snapd' leaves things reasonably cleaned up.  :-)  It
> >even removes the /snap directory.
>
> Real Final step (after cleaning up various snap[ish] dirs)

You might also want to manually delete the Systemd units related to
Snap. When I removed Snap, I also did something like:

    # find /etc/systemd -iname '*snap*' -exec rm -f {} \;
    # shutdown -r now

Without the Systemd units mounting, you can manually delete a lot of Snap cruft.

> Preventing Snap Installation Through the apt Command
>
> $ sudo cat <<EOF | sudo tee /etc/apt/preferences.d/nosnap.pref
> Package: snapd
> Pin: release a=*
> Pin-Priority: -10
> EOF

I think Ubuntu's "no snap" integration could be a lot better. If you
apt-get remove it, Ubuntu will try to reinstall it, and you need the
above workaround.

Packages like Firefox will still regurgitate a message about Snap
(even when Snap is disabled through pin-priority). I feel like Apt or
Apt-Get or Aptitude should do better when Snap is disabled or not
available.

You may need this for Firefox, too:

   $ cat /etc/apt/sources.list.d/mozillateam-ubuntu-ppa-jammy.list
   deb https://ppa.launchpadcontent.net/mozillateam/ppa/ubuntu/ jammy main
   # deb-src https://ppa.launchpadcontent.net/mozillateam/ppa/ubuntu/ jammy main

Jeff