bug#27067: Feature request: please allow for either automatic logging of all output of every guix commands or add an option to each guix command to allow it for all to be logged

[Brenton Horne]

This feature request isn't specific to guix build (it was low priority to me as I knew it at least had the ability to log, thanks for telling me it automatically does but it doesn't really change this feature request), it's asking for all guix commands with substantial output to automatically log. I have never run guix build, but I know that some guix commands run for a very long time and if they fail and do not log it, it can be quite irritating to have to re-run it and use tee to log its output. For example, `guix pull && guix package -u` has taken up to 12 hours to run for me before, so if it fails and doesn't log it can be quite an irritating waste of time and deter people from filing invaluable bug reports about issues they've experienced with guix. 

On 26 May 2017 at 06:10, Ricardo Wurmus <address@hidden> wrote:

Brenton Horne <address@hidden> writes:

> As I understand it only the guix build command has an option to log output
> to a file.

Actually, the output of “guix build” is indeed stored by default.
You can get it by asking for the logs for a given derivation.

For example:

    # build something, please
    guix build --no-substitutes samtools
    …
    # show me the derivation
    guix build -d samtools
    # show me the location of the matching log
    guix build --log-file $(guix build -d samtools)

Does this solve the feature request?

--
Ricardo

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https://elephly.net

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Thanks for your time,

Brenton