gnu: All snippets report errors using exceptions, else return #t.

* gnu/packages/admin.scm, gnu/packages/algebra.scm, gnu/packages/audio.scm,
gnu/packages/backup.scm, gnu/packages/base.scm,
gnu/packages/bioinformatics.scm, gnu/packages/cdrom.scm,
gnu/packages/chez.scm, gnu/packages/code.scm, gnu/packages/compression.scm,
gnu/packages/cross-base.scm, gnu/packages/crypto.scm, gnu/packages/cups.scm,
gnu/packages/databases.scm, gnu/packages/dns.scm, gnu/packages/emacs.scm,
gnu/packages/emulators.scm, gnu/packages/engineering.scm,
gnu/packages/enlightenment.scm, gnu/packages/fpga.scm,
gnu/packages/freedesktop.scm, gnu/packages/ftp.scm, gnu/packages/games.scm,
gnu/packages/gcc.scm, gnu/packages/geo.scm, gnu/packages/ghostscript.scm,
gnu/packages/gl.scm, gnu/packages/glib.scm, gnu/packages/gnome.scm,
gnu/packages/gnuzilla.scm, gnu/packages/graphics.scm, gnu/packages/gtk.scm,
gnu/packages/guile.scm, gnu/packages/irc.scm, gnu/packages/java.scm,
gnu/packages/kerberos.scm, gnu/packages/linux.scm, gnu/packages/lisp.scm,
gnu/packages/lxde.scm, gnu/packages/machine-learning.scm,
gnu/packages/mail.scm, gnu/packages/maths.scm, gnu/packages/messaging.scm,
gnu/packages/monitoring.scm, gnu/packages/mp3.scm, gnu/packages/music.scm,
gnu/packages/netpbm.scm, gnu/packages/networking.scm, gnu/packages/node.scm,
gnu/packages/nvi.scm, gnu/packages/ocaml.scm, gnu/packages/pdf.scm,
gnu/packages/perl.scm, gnu/packages/php.scm, gnu/packages/plotutils.scm,
gnu/packages/pretty-print.scm, gnu/packages/profiling.scm,
gnu/packages/pulseaudio.scm, gnu/packages/python-crypto.scm,
gnu/packages/python.scm, gnu/packages/qt.scm, gnu/packages/robotics.scm,
gnu/packages/sawfish.scm, gnu/packages/scanner.scm, gnu/packages/scheme.scm,
gnu/packages/scribus.scm, gnu/packages/sdl.scm,
gnu/packages/serialization.scm, gnu/packages/shells.scm,
gnu/packages/slang.scm, gnu/packages/smalltalk.scm, gnu/packages/ssh.scm,
gnu/packages/sync.scm, gnu/packages/syncthing.scm, gnu/packages/tbb.scm,
gnu/packages/terminals.scm, gnu/packages/texinfo.scm,
gnu/packages/text-editors.scm, gnu/packages/textutils.scm,
gnu/packages/tls.scm, gnu/packages/unrtf.scm,
gnu/packages/version-control.scm, gnu/packages/video.scm,
gnu/packages/vpn.scm, gnu/packages/web.scm, gnu/packages/wm.scm,
gnu/packages/wxwidgets.scm, gnu/packages/xdisorg.scm, gnu/packages/xorg.scm:
In all snippets, report errors using exceptions, or else return #t.

1 files changed, 11 insertions, 10 deletions

diff --git a/gnu/packages/wm.scm b/gnu/packages/wm.scm
index f12eedab43..b16ef29ea5 100644
--- a/gnu/packages/wm.scm
+++ b/gnu/packages/wm.scm
@@ -673,16 +673,17 @@ experience.")
                "0kwpbls9h1alxcmvxh5g9qb995fds5b2ngcr44w0ibazkyls2pdc"))
              (modules '((guix build utils)
                         (srfi srfi-19)))
-             (snippet
-              ;; Remove non-reproducible timestamp and use the date of the
-              ;; source file instead.
-              '(substitute* "common/version.c"
-                 (("__DATE__ \" \" __TIME__")
-                  (date->string
-                   (time-utc->date
-                    (make-time time-utc 0
-                               (stat:mtime (stat "awesome.c"))))
-                   "\"~c\""))))
+             (snippet '(begin
+                         ;; Remove non-reproducible timestamp and use the date
+                         ;; of the source file instead.
+                         (substitute* "common/version.c"
+                           (("__DATE__ \" \" __TIME__")
+                            (date->string
+                             (time-utc->date
+                              (make-time time-utc 0
+                                         (stat:mtime (stat "awesome.c"))))
+                             "\"~c\"")))
+                         #t))
              (patches (search-patches "awesome-reproducible-png.patch"))))
     (build-system cmake-build-system)
     (native-inputs `(("asciidoc" ,asciidoc)