Regarding the epoch jump (I opted in, I'm on stable), I get this log from sudo systemctl status epoch
ott 18 06:25:51 corvus-framework epoch.sh[1162]: Failed to fetch file, retrying 5 out of 5 "https://cdn.getsol.us/repo/polaris/eopkg-index.xml.xz.sha1sum": <urlopen >
ott 18 06:25:51 corvus-framework epoch.sh[1162]: Solus repository could not be reached. Removing Solus from system.
ott 18 06:25:51 corvus-framework epoch.sh[1162]: Repo Solus removed from system.
And of course eopkg lr
gives me shannon as the active repo, not polaris.
cdn problems ?
EDIT:
As it turns out no, it wasn't a cdn problem.
I'm on Plasma, my only net connection is wifi; when I reboot, at the time the script tries to run, I'm not yet connected to wifi (the actual connection happens later, at user login), therefore the system tries to connect to an effectively unreachable destination and fails.
To properly execute the epoch jump I had to run sudo systemctl restart epoch
once logged in (and actually connected to wifi); it then worked.