Comment 12 for bug 1925484

I verified software-properties-gtk works correctly on hirsute, and the same stuff ddstreet did:

jak@jak-t480s:/$ dpkg -l|grep distro-info-data
ii distro-info-data 0.46ubuntu2 all information about the distributions' releases (data files)
jak@jak-t480s:/$ for p in devel supported stable; do echo "\$ distro-info --$p"; distro-info --$p; for m in date=2021-04-23 fullname release; do echo "\$ distro-info --$m --$p"; distro-info --$m --$p; done; done
$ distro-info --devel
impish
$ distro-info --date=2021-04-23 --devel
impish
$ distro-info --fullname --devel
Ubuntu 21.10 "Impish Indri"
$ distro-info --release --devel
21.10
$ distro-info --supported
bionic
focal
groovy
hirsute
impish
$ distro-info --date=2021-04-23 --supported
bionic
focal
groovy
hirsute
impish
$ distro-info --fullname --supported
Ubuntu 18.04 LTS "Bionic Beaver"
Ubuntu 20.04 LTS "Focal Fossa"
Ubuntu 20.10 "Groovy Gorilla"
Ubuntu 21.04 "Hirsute Hippo"
Ubuntu 21.10 "Impish Indri"
$ distro-info --release --supported
18.04 LTS
20.04 LTS
20.10
21.04
21.10
$ distro-info --stable
hirsute
$ distro-info --date=2021-04-23 --stable
hirsute
$ distro-info --fullname --stable
Ubuntu 21.04 "Hirsute Hippo"
$ distro-info --release --stable
21.04