Experimenting with unman’s salt formulas, recently 4.2-ready, I encountered this error early on after installing the repository definition (from here):
[user@dom0 ~]$ sudo qubes-dom0-update
Using sys-firewall as UpdateVM to download updates for Dom0; this may take some time...
Unable to detect release version (use '--releasever' to specify release version)
3isec Qubes Dom0 Repository (updates) 363 B/s | 262 B 00:00
Errors during downloading metadata for repository '3isec-dom0-current':
- Status code: 404 for https://qubes.3isec.org/rpm/r4.2/current/dom0/fc32/repodata/repomd.xml (IP: <scrubbed>)
Error: Failed to download metadata for repo '3isec-dom0-current': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried
The cause is a lingering 4.1-ism in the definition:
[3isec-dom0-current]
name = 3isec Qubes Dom0 Repository (updates)
baseurl = https://qubes.3isec.org/rpm/r$releasever/current/dom0/fc32
skip_if_unavailable=False
enabled = 1
metadata_expire = 6h
gpgcheck = 1
gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-unman
Change fc32 to fc37 and you’re good to go.