Hi again Andrew, It turns out that the package is not reproducible:
--8<---------------cut here---------------start------------->8--- $ ./pre-inst-env guix challenge scheme48-prescheme /gnu/store/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2 contents differ: no local build for '/gnu/store/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2' https://ci.guix.gnu.org/nar/lzip/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2: 0fahr4s5qz980zz96xmrwf8r87w56kicxr8s80fvis98q7v5czll https://bordeaux.guix.gnu.org/nar/lzip/qkby7f4nr3lxlm16zmswmka5hgfs6spw-scheme48-prescheme-1.9.2: 0jphmcmijk68phwq93qbzszy5pdmnasa3qdcp2nc5wqc25a7kpxk differing file: /lib/scheme48-1.9.2/prescheme.image 1 store items were analyzed: - 0 (0.0%) were identical - 1 (100.0%) differed - 0 (0.0%) were inconclusive $ git log |head -1 commit cf9e0508b26196dc985302776d860a0359652c59 --8<---------------cut here---------------end--------------->8--- Any idea what might be wrong? Thanks, Ludo’.