;; Guix error after "guix pull" and "guix system reconfigure" as root yesterday (guix-command "package" "--upgrade") substitute: Backtrace: substitute: In ice-9/boot-9.scm: substitute: 157: 9 [catch #t # ...] substitute: In unknown file: substitute: ?: 8 [apply-smob/1 #] substitute: In ice-9/boot-9.scm: substitute: 63: 7 [call-with-prompt prompt0 ...] substitute: In ice-9/eval.scm: substitute: 432: 6 [eval # #] substitute: In ice-9/boot-9.scm: substitute: 2401: 5 [save-module-excursion #] substitute: 4050: 4 [#] substitute: 1724: 3 [%start-stack load-stack ...] substitute: 1729: 2 [#] substitute: In unknown file: substitute: ?: 1 [primitive-load "/gnu/store/8wbn6zwx5qkmnblasdlsz8vibpdzm8w9-guix-0.11.0-1.324a/bin/.guix-real"] substitute: In guix/ui.scm: substitute: 1220: 0 [run-guix-command substitute "--query"] substitute: substitute: guix/ui.scm:1220:8: In procedure run-guix-command: substitute: guix/ui.scm:1220:8: X.509 certificate of 'mirror.hydra.gnu.org' could not be verified: substitute: signer-not-found substitute: invalid substitute: guix package: error: corrupt input while restoring archive from socket $5 = #t