Re: [PATCH 19/43] gnu: Add ghc-bytestring.

[Leo Famulari]

On Tue, Sep 06, 2016 at 10:22:42PM +0000, ng0 wrote:
> Leo Famulari <address@hidden> 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.