elastic-arm-956a3eb3: building cskcvz5sn4w6d92d4vb3y9fp40aa7k1y-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