Comment 5 for bug 1585056

Thanks for the report, this exploratory work requires a lot more attention from me.

It turns out that squid is offending snap confinement is many different fronts (logging and working dir, on top of the setgid) and I need to investigate what would be the best solution from the squid perspective.

For now, to unblock users and potential contributors, I've republished it as devmode on 16 edge channel (so it's clear that it's not ready for production) with a custom squid.conf that allows it to start (barely):

{{{
$ sudo snap install squid3 --devmode --channel=edge
14.99 MB / 14.99 MB [========================================================>_] 100.00 % 3.07 MB/s

Name Version Rev Developer
squid3 3.5.16-3 5 cprov

$ sudo mkdir -m o+rw /var/snap/squid3/current/logs

$ squid3 -N
...
}}}

Current snapcraft setup and custom configuration can be found at https://code.launchpad.net/~cprov/+git/squid-snap

Sorry for the inconvenience and misleading expectation I've caused.