Hi! As reported by mange on #guix, it seems that ‘guix substitute’ does not follow redirects:
--8<---------------cut here---------------start------------->8--- $ guix weather icecat emacs --substitute-urls=https://ci.guix.gnu.org computing 2 package derivations for x86_64-linux... looking for 2 store items on https://ci.guix.gnu.org... updating substitutes from 'https://ci.guix.gnu.org'... 100.0% https://ci.guix.gnu.org 100.0% substitutes available (2 out of 2) at least 201.3 MiB of nars (compressed) 293.5 MiB on disk (uncompressed) 0.084 seconds per request (0.2 seconds in total) 11.9 requests per second at least 1,000 queued builds x86_64-linux: 368 (36.8%) i686-linux: 556 (55.6%) armhf-linux: 6 (.6%) aarch64-linux: 69 (6.9%) i586-gnu: 1 (.1%) build rate: 154.41 builds per hour i686-linux: 40.77 builds per hour x86_64-linux: 37.06 builds per hour armhf-linux: 40.30 builds per hour aarch64-linux: 35.83 builds per hour i586-gnu: 0.55 builds per hour $ guix weather icecat emacs --substitute-urls=https://ci.guix.info computing 2 package derivations for x86_64-linux... looking for 2 store items on https://ci.guix.info... updating substitutes from 'https://ci.guix.info'... 100.0% https://ci.guix.info 0.0% substitutes available (0 out of 2) unknown substitute sizes 0.0 MiB on disk (uncompressed) 0.069 seconds per request (0.1 seconds in total) 14.4 requests per second ni sekvas la redirektigon al 'https://ci.guix.gnu.org/api/queue'... 'https://ci.guix.gnu.org/api/queue' returned 500 ("Internal Server Error") --8<---------------cut here---------------end--------------->8--- This might explain things like <https://issues.guix.gnu.org/45051>. (*.guix.info were turned into HTTP redirects a few days ago, see <https://git.savannah.gnu.org/cgit/guix/maintenance.git/commit/?id=c85e128e11d3ba060ae3a6e01da20f531b42d6ef>.) Ludo’.
