Hi, Trying to travel back to Sun Apr 7 22:07:14 2019 +0200 (commit 56e95d54d209c2428f970d65d9b27ae4168449ad) to re-create mcrl2-minimal by doing
--8<---------------cut here---------------start------------->8--- guix time-machine --commit=56e95d54d209c2428f970d65d9b27ae4168449ad -- environment --ad-hoc mcrl2-minimal --8<---------------cut here---------------end--------------->8--- fails with --8<---------------cut here---------------start------------->8--- building /gnu/store/cjim33x0q1bv1ppkv3qijvr1pvsn4y0q-harfbuzz-2.4.0.tar.bz2.drv... downloading from https://www.freedesktop.org/software/harfbuzz/release/harfbuzz-2.4.0.tar.bz2... |offloading build of /gnu/store/6fgg1irkcvqyb4f9f8n0nzi5gknyqhfn-gcc-mesboot1-4.7.4.drv to 'kluit.dezyne.org' - 'build' phasesha256 hash mismatch for /gnu/store/b4cdp9sp44848348lrpzbfafhmjqf8nr-harfbuzz-2.4.0.tar.bz2: expected hash: 1mpah6kwqid1kxsj4rwqsniivqbrx231j65v51yncx6s0dch0dch actual hash: 0vrkvdlmihdg62a4c6h5kx27khc33xmb95l50zgnwnavvpwyyw5l hash mismatch for store item '/gnu/store/b4cdp9sp44848348lrpzbfafhmjqf8nr-harfbuzz-2.4.0.tar.bz2' build of /gnu/store/cjim33x0q1bv1ppkv3qijvr1pvsn4y0q-harfbuzz-2.4.0.tar.bz2.drv failed View build log at '/var/log/guix/drvs/cj/im33x0q1bv1ppkv3qijvr1pvsn4y0q-harfbuzz-2.4.0.tar.bz2.drv.bz2'. cannot build derivation `/gnu/store/p6gfcdacjcqf2br0zwsyzx1chfvg9gxi-harfbuzz-2.4.0.drv': 1 dependencies couldn't be built killing process 5083 --8<---------------cut here---------------end--------------->8--- The recipe for harfbuzz has a sha256 that used to be valid in April, but hasn't been valid anymore since May, as this fix --8<---------------cut here---------------start------------->8--- commit a8bb8fccd82a10a46f127b2235675b4f6cbaaf98 Author: Marius Bakke <mba...@fastmail.com> Date: Sat May 4 18:01:12 2019 +0200 gnu: harfbuzz: Update source hash. The previous tarball was modified in-place; see <https://github.com/harfbuzz/harfbuzz/issues/1641>. * gnu/packages/gtk.scm (harfbuzz)[source](sha256): Update. --8<---------------cut here---------------end--------------->8--- shows. Thoughts? Greetings, janneke -- Jan Nieuwenhuizen <jann...@gnu.org> | GNU LilyPond http://lilypond.org Freelance IT http://JoyofSource.com | Avatar® http://AvatarAcademy.com