Brice, Thanks! As discussed on IRC, I agree stdout is better. These are reports, not run-time errors. Brice Waegeneire 写道: > * guix/scripts/lint.scm (run-checkers): Replace > 'current-error-port' by > 'current-output-port'. It should still print *progress* messages (and any run-time warnings & errors) to stderr, though: $ guix lint sl >toot checking sl@5.02[cve]... $ guix lint sl >toot guix lint: error: something bad happened This includes reverting to (isatty? (current-error-port)); stdout's ttyness doesn't matter. Please also rebase your revisions onto current master (particularly 57e12aa). Kind regards, T G-R