elastic-arm-0a911f46: building y3v2g56g4977sz3m8r83rlfy1jhqbh48-iets-diff-e2e.drv
ok   equal derivations exit 0
ok   the text names the env, the source and the input drv
ok   the json object names the same differences
ok   --depth 0 stops at the input derivation
ok   one side is a usage error (exit 2)
ok   an unknown flag is a usage error (exit 2)
ok   two installables, one evaluation each
ok   env name that only repeats the derivation name is left out
ok   -f FILE is the positional FILE
ok   --file FILE is the positional FILE