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bug(25.10): chisel cut failing for 25.10 #312
Description
Hi, we can no longer cut chisel slices for Ubuntu 25.10. Chisel version v1.4.2:
# chisel cut --release=ubuntu-25.10 --root=root base-files_bin
2026/07/21 12:46:57 Consulting release repository...
2026/07/21 12:46:58 Cached ubuntu-25.10 release is still up-to-date.
2026/07/21 12:46:58 Processing ubuntu-25.10 release...
2026/07/21 12:47:11 Selecting slices...
2026/07/21 12:47:11 Fetching ubuntu 25.10 questing suite details...
error: cannot find archive data
My unverified, naive guess for the cause is that 25.10 is EOL but it's still up in archive.ubuntu.com, and not yet in old-releases.ubuntu.com. My understanding is that this is quite common; I don't really know when the release gets moved but for example Plucky (25.04) is still up in archive. and not in old-releases..
Activity
upils commentedon Jul 21, 2026
Your guess is right, plucky and questing are not in https://old-releases.ubuntu.com/ubuntu/dists/. So the archive does not fulfill the contract Chisel expects. However maybe this is intentional and the behavior of the archive changed, so I poked the release team and see if we need to adapt in any way.
We could temporarily work around it by setting a
maintenance.end-of-lifevalue in the future for these 2 releases in chisel-releases but that may create more problems down the line.upils commentedon Jul 22, 2026
I discussed it with the archive admins and we concluded that having a fallback mechanism in Chisel would be safer as this situation could last for months and it may repeat in the future when other releases are EoL. @tigarmo feel free to test the fix in the PR if you can.
tigarmo commentedon Jul 22, 2026
Ah nice, thanks. I'm going to point rockcraft's spread tests at it and report back.
tigarmo commentedon Jul 23, 2026
@upils I confirm that the version of Chisel on that branch fixes all broken 25.10 tests.