When running ./contrib/guix/guix-build on v31.0rc3 with a recent Guix,
the build fails immediately with:
manifest.scm:99:22: error: url-fetch: unbound variable hint: Did you forget `(use-modules (guix download))'?
And after adding that:
manifest.scm:219:18: error: cmake-build-system: unbound variable
hint: Did you forget `(use-modules (guix build-system cmake))'?
Fixed it with: add (guix download) and (guix build-system cmake) to the
use-modules block in contrib/guix/manifest.scm.
Guix version: bf31052841b5ada64bbc1eeadfcc098a09f3a605
Generation 1 Apr 08 2026 21:10:45 (current) guix bf31052 repository URL: https://git.savannah.gnu.org/git/guix.git branch: master commit: bf31052841b5ada64bbc1eeadfcc098a09f3a605
