this derivation will be built:
  /nix/store/5r5axhbhkjp7vly6idnz4wiw5pi1va26-iets-diff-e2e.drv
building '/nix/store/5r5axhbhkjp7vly6idnz4wiw5pi1va26-iets-diff-e2e.drv'
iets-diff-e2e> ok   equal derivations exit 0
iets-diff-e2e> ok   the text names the env, the source and the input drv
iets-diff-e2e> ok   the json object names the same differences
iets-diff-e2e> ok   --depth 0 stops at the input derivation
iets-diff-e2e> ok   one side is a usage error (exit 2)
iets-diff-e2e> ok   an unknown flag is a usage error (exit 2)
iets-diff-e2e> ok   two installables, one evaluation each
iets-diff-e2e> ok   env name that only repeats the derivation name is left out
iets-diff-e2e> ok   -f FILE is the positional FILE
iets-diff-e2e> ok   --file FILE is the positional FILE

upload niks3: ok