Hello, There is currently an issue involving lf, the package build used by Guix pulls from the commit tagged r27, however since commit #a94015d, a %d is replaced with a %v, and the build will fail with the %d. The diff can be seen here: https://github.com/gokcehan/lf/commit/a94015d2210a7983744f47395f542459a56175d9#diff-89fff58c92279529eda2fbee221d12b5b3ca94d9f33cd84ddd424e063ab5a37c
Changing to a newer commit should be able to fix this error. Thanks, Tyler Wolf
