Some package definitions use G-expressions (see, e.g., chez-scheme).
Import (guix gexp) such that Guile knows how to read those.
Otherwise, an exception such as the following might be raised:
ERROR: In procedure read:
In procedure scm_lreadr: gnu/services/networking.scm:480:16: Unknown # object: #\~
* etc/committer.scm.in: Import (guix gexp).
Signed-off-by: Ricardo Wurmus <rekado@elephly.net>
50c2dcd1c9