Re: (Geiser or guile bug) Guix-daemon output is missing

[ludo@gnu.org (Ludovic Courtès)]

Alex Kost <alezost@gmail.com> skribis:

> Now the bug itself:
>
> 1. Start Geiser (M-x run-guile)
>
> 2. Make a scheme buffer and evaluate (use-modules (guix scripts build))
>    there using "C-x C-e" or "C-M-x" (or any other "geiser-eval-…"
>    command).  This is important: do not ,use module in the REPL;
>    evaluate ‘use-modules’ clause in a scheme buffer!
>
> 3. Go to the REPL and run the following there:
>
>    (catch 'quit (lambda () (guix-build "test-package")) (const #t)).
>
> You get only "The following derivation will be built: …" but there is no
> build output from guix-daemon.

Ha ha!  Try this before:

  (current-build-output-port (current-error-port))

The trick here is that ‘current-build-output-port’ is initialized to
(current-error-port), but that initialization happens at the top-level,
apparently before Geiser has rebound ‘current-error-port’, hence the
silence.

HTH!

Ludo’.