From: Leo Famulari <leo@famulari.name>
To: Jookia <166291@gmail.com>
Cc: guix-devel@gnu.org
Subject: Re: Debugging Guix packages?
Date: Wed, 20 Jan 2016 20:27:12 -0500 [thread overview]
Message-ID: <20160121012712.GB8738@jasmine> (raw)
In-Reply-To: <20160121002134.GA14628@novena-choice-citizen.lan>
On Thu, Jan 21, 2016 at 11:21:34AM +1100, Jookia wrote:
> On Wed, Jan 20, 2016 at 11:26:14PM +0100, Ludovic Courtès wrote:
> > Yes, I agree that this would be nice.
>
> I wonder how this could be implemented, any ideas?
>
> > OTOH, for things like GCC, once you start fiddling with the build tree,
> > you quickly lose track of what state you’re in.
> >
> > My workflow has been:
> >
> > guix build foo -K
> > # build fails
> > cd /tmp/guix-build*
> > source environment-variables
> > # Fiddle with the build tree to get additional info about the problem
> > # and a possible fix.
> > # Write a phase that hopefully fixes the issue.
> > # Try again.
> >
> > Since the ‘environment-variables’ file always contains the value of
> > environment variables at the time where the build failed (rather than
> > their initial value), it usually works quite well.
>
> This could be good enough for now but again this doesn't work with this like
> builds that don't fail. My concrete example is wanting to patch software but not
> knowing how to get to the pre-patch state so I can then work from that in
> testing which patches apply and which don't, or make my own.
My workflow for creating patches:
$ tar xf $(guix build --source foo)
# or, if the package is in your local source tree:
$ tar xf $(./pre-inst-env guix build --source foo)
$ cd foo && git init && git add -A && git commit -m "Initial commit"
# make edits and commit them. Then:
$ git format-patch
It's not necessary to use git but it helps me keep track of my changes.
>
> > My 2¢,
> > Ludo’.
>
> Cheers,
> Jookia.
>
next prev parent reply other threads:[~2016-01-21 1:27 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-19 2:42 Debugging Guix packages? Jookia
2016-01-19 14:52 ` Ricardo Wurmus
2016-01-19 15:56 ` Christopher Allan Webber
2016-01-20 22:26 ` Ludovic Courtès
2016-01-21 0:21 ` Jookia
2016-01-21 1:27 ` Leo Famulari [this message]
2016-01-21 1:59 ` Ben Woodcroft
2016-01-21 20:55 ` Ludovic Courtès
2016-01-22 4:13 ` Pjotr Prins
2016-01-22 4:53 ` Jookia
2016-01-22 17:05 ` Ludovic Courtès
2016-01-21 20:58 ` Ludovic Courtès
2016-01-21 22:10 ` Jookia
2016-01-21 22:28 ` Christopher Allan Webber
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