Ubuntu 22.04.1 LTSわよ
$ sudo apt update
$ apt search mastodon | grep '^[a-z]'
bitlbee-plugin-mastodon/jammy 1.4.5-1 amd64
caveexpress/jammy 2.5.2-1 amd64
feed2toot/jammy,jammy 0.17-1 all
ldh-gui-suite/jammy,jammy 0.1~20200908-4 all
python3-mastodon/jammy,jammy 1.5.1-1 all
toot/jammy,jammy 0.28.0-2 all
tootle/jammy 1.0-alpha2-1 amd64
ありまちえん