From mboxrd@z Thu Jan  1 00:00:00 1970
From: Leo Famulari <leo@famulari.name>
Subject: Re: [PATCH 19/43] gnu: Add ghc-bytestring.
Date: Tue, 6 Sep 2016 22:35:06 -0400
Message-ID: <20160907023506.GA29997@jasmine>
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To: ng0 <ng0@we.make.ritual.n0.is>
Cc: guix-devel@gnu.org

On Tue, Sep 06, 2016 at 10:22:42PM +0000, ng0 wrote:
> Leo Famulari <leo@famulari.name> writes:
> 
> > On Sun, Sep 04, 2016 at 04:17:18PM +0000, ng0 wrote:
> >> * gnu/packages/haskell.scm (ghc-bytestring): New variable.
> >
> >> +    (arguments
> >> +     `(#:tests? #f)) ; Test number two becomes non-responsive for 20+ minutes
> >
> > I have used `strace -f` to check if long-running quiet tests are
> > actually working or if they are stuck. That could help here.
> 
> How did you do this in the build?
> Or did you, what I suspect and would do, just run it without the guix
> build, the "normal" way?

I do it by attaching to the guix-daemon after learning it's PID:

$ pgrep guix-daemon
30606
$ strace -f -p 30606 -o /tmp/logfile

Then I do `guix build` from another terminal.