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aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gmail.com header.s=20210112 header.b=NJWGy2s7; dmarc=fail reason="SPF not aligned (relaxed)" header.from=gmail.com (policy=none); spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: 6.35 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gmail.com header.s=20210112 header.b=NJWGy2s7; dmarc=fail reason="SPF not aligned (relaxed)" header.from=gmail.com (policy=none); spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: CF63018790 X-Spam-Score: 6.35 X-Migadu-Scanner: scn0.migadu.com X-TUID: H3bETHXUg0lA Hi, Bug#55499 [1] is fixed by 4ff12d1de7cd617b791996ee7ca1240660b4c20e. However, because the manifest version is going from 3 to 4 with new fields, the new Guix cannot builds the old Guix. Commit 4ff12d1de7cd617b791996ee7ca1240660b4c20e is not able to go to its parent 9b8c442b254b82196fe2492142b3c3bbbd891a1b. --8<---------------cut here---------------start------------->8--- $ git rev-parse 4ff12d1de7^ 9b8c442b254b82196fe2492142b3c3bbbd891a1b $ guix time-machine --commit=4ff12d1de7 -- time-machine --commit=9b8c442b25 -- help Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'... Computing Guix derivation for 'x86_64-linux'... \ The following derivation will be built: /gnu/store/r5qk23fibxn5ryd2k7b8qkbryqv4m3ds-profile.drv building package cache... |builder for `/gnu/store/19nk2x26s0dp68r7d36ifbg0ck0q3xps-guix-package-cache.drv' failed to produce output path `/gnu/store/axqgrls563slnp76x60dqlv7sdwcm2ly-guix-package-cache' build of /gnu/store/19nk2x26s0dp68r7d36ifbg0ck0q3xps-guix-package-cache.drv failed View build log at '/var/log/guix/drvs/19/nk2x26s0dp68r7d36ifbg0ck0q3xps-guix-package-cache.drv.gz'. cannot build derivation `/gnu/store/r5qk23fibxn5ryd2k7b8qkbryqv4m3ds-profile.drv': 1 dependencies couldn't be built guix time-machine: error: build of `/gnu/store/r5qk23fibxn5ryd2k7b8qkbryqv4m3ds-profile.drv' failed --8<---------------cut here---------------end--------------->8--- 1: Cheers, simon