Closing, faust has been updated to 2.41.1 in commit bfec24b11810edcaccb1c57ca493f015287e5ce1 and `guix weather faust' indicates that substitutes are available. (the package builds)
Additional info: --8<---------------cut here---------------start------------->8--- $ guix --version guix (GNU Guix) 3d0cdf963820da665d71987c15cae6e503efc701 --8<---------------cut here---------------end--------------->8--- -- Thanks, Bruno.
