fix: never pin Ubuntu SNAPSHOT — snapshot.ubuntu.com lacks ubuntu-ports - #13
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The daily snapshot bump filled in Ubuntu's deliberately-empty SNAPSHOT=, routing the arm64 leg to https://snapshot.ubuntu.com/ubuntu-ports/... which returns 401 (only the amd64/i386 /ubuntu tree exists), breaking the nightly multi-arch rebuild. Reset the Ubuntu pins to empty and teach update-snapshot.sh to skip env files whose pin is empty (deliberate live- mirror opt-out). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Problem
The nightly rebuild (run 29557127446) failed on both Ubuntu versions:
The Ubuntu
envfiles deliberately shipSNAPSHOT=empty (live mirrors) because snapshot.ubuntu.com only serves the amd64/i386/ubuntutree —/ubuntu-portsreturns 401, so a pinned arm64 build can never succeed. Butscripts/update-snapshot.shbumps every env file with aSNAPSHOT=key, so the daily bump PR #12 filled in the Ubuntu pin for the first time and broke the arm64 leg of the multi-arch nightly.Verified today:
https://snapshot.ubuntu.com/ubuntu/20260716T000000Z/dists/jammy/Release→ 200https://snapshot.ubuntu.com/ubuntu-ports/20260716T000000Z/dists/jammy/Release→ 401Fix
images/ubuntu/*/envSNAPSHOT=back to empty, with a comment explaining why it must stay empty.update-snapshot.shnow skips env files whose existing pin is empty — empty is a deliberate live-mirror opt-out, so tomorrow's bump PR can't reintroduce the breakage.Tested locally: running
scripts/update-snapshot.sh 20990101T000000Zbumps only the two Debian env files and leaves both Ubuntu files untouched.🤖 Generated with Claude Code