bug#26805: [PATCH] gs-fonts: add missing podule imports

[Sergei Trofimovich <slyfox@inbox.ru>]

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On Tue, 09 May 2017 12:20:46 +0200
ludo@gnu.org (Ludovic Courtès) wrote:

> Hello!
> 
> Sergei Trofimovich <slyfox@inbox.ru> skribis:
> 
> > On code-updates branch 'gs-fonts' build fails as:
> >
> > ice-9/psyntax.scm:1534:32: In procedure expand-macro:
> > ice-9/psyntax.scm:1534:32: Syntax error:
> > ...-gs-fonts-8.11-guile-builder:1:2300: source expression failed to match
> > any pattern in form (%modify-phases phases* (delete (quote configure)))
> > builder for `/gnu/store/...-gs-fonts-8.11.drv' failed with exit code 1  
> 
> Any idea when this problem appeared?  That’s on core-updates, right?

Yes, core-updates. It was caused by guile-2.0->guile-2.2 switch.

> > +      #:modules ((guix build gnu-build-system)
> > +                 (guix build utils)
> > +                 (srfi srfi-1))  
> 
> The first two modules are here by default (see ‘%default-modules’ in
> (guix build-system gnu)), so I wonder why adding (srfi srfi-1) would
> help here.
> 
> Thoughts?

In http://lists.gnu.org/archive/html/guix-devel/2017-05/msg00010.html
thread Andy explains syntax-rules changed the rules on how syntax-match
is done in guile-2.2: now things are matched by binding, not by name.

That means evaluation of -guile-builder needs to keep things in scope at
<some-strange-evaluation-time-i-have-no-understanding-about> :)

The breakage is quite widespread. Danny applied 3 patches already to fix
similar problems. I have at least 5 more packages fixed (or "fixed"?) in a
similar way and more to go.

-- 

  Sergei

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