$ guix environment --ad-hoc -l bees.scm --pure coreutils -- beesd -h
/gnu/store/ql0xn5m3l35fsxnck9lbh44cih8pqr8w-profile/sbin/beesd: line 35: awk: command not found
/gnu/store/ql0xn5m3l35fsxnck9lbh44cih8pqr8w-profile/sbin/beesd: line 23: uuidparse: command not found
/gnu/store/ql0xn5m3l35fsxnck9lbh44cih8pqr8w-profile/sbin/beesd: line 23: grep: command not found
/gnu/store/ql0xn5m3l35fsxnck9lbh44cih8pqr8w-profile/sbin/beesd: line 76: egrep: command not found
ERROR: No config for -h