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, 32 insertions, 24 deletions

diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm
index e9c83997ab..2aa6970ea9 100644
--- a/gnu/packages/gcc.scm
+++ b/gnu/packages/gcc.scm
@@ -370,13 +370,15 @@ Go.  It also includes runtime support libraries for these languages.")
               ;; This is required for building with glibc-2.26.
               ;; https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81712
               (snippet
-               '(for-each
-                  (lambda (dir)
-                    (substitute* (string-append "libgcc/config/"
-                                                dir "/linux-unwind.h")
-                      (("struct ucontext") "ucontext_t")))
-                  '("aarch64" "alpha" "bfin" "i386" "m68k"
-                    "pa" "sh" "tilepro" "xtensa")))))
+               '(begin
+                  (for-each
+                   (lambda (dir)
+                     (substitute* (string-append "libgcc/config/"
+                                                 dir "/linux-unwind.h")
+                       (("struct ucontext") "ucontext_t")))
+                   '("aarch64" "alpha" "bfin" "i386" "m68k"
+                     "pa" "sh" "tilepro" "xtensa"))
+                  #t))))
     (supported-systems %supported-systems)
     (inputs
      `(("isl" ,isl-0.11)
@@ -402,13 +404,15 @@ Go.  It also includes runtime support libraries for these languages.")
               ;; This is required for building with glibc-2.26.
               ;; https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81712
               (snippet
-               '(for-each
-                  (lambda (dir)
-                    (substitute* (string-append "libgcc/config/"
-                                                dir "/linux-unwind.h")
-                      (("struct ucontext") "ucontext_t")))
-                  '("aarch64" "alpha" "bfin" "i386" "m68k" "nios2"
-                    "pa" "sh" "tilepro" "xtensa")))))
+               '(begin
+                  (for-each
+                   (lambda (dir)
+                     (substitute* (string-append "libgcc/config/"
+                                                 dir "/linux-unwind.h")
+                       (("struct ucontext") "ucontext_t")))
+                   '("aarch64" "alpha" "bfin" "i386" "m68k" "nios2"
+                     "pa" "sh" "tilepro" "xtensa"))
+                  #t))))
     ;; Override inherited texinfo-5 with latest version.
     (native-inputs `(("perl" ,perl)   ;for manpages
                      ("texinfo" ,texinfo)))))
@@ -440,9 +444,11 @@ Go.  It also includes runtime support libraries for these languages.")
                ;;
                ;;   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67590
                ;;   http://cgit.openembedded.org/openembedded-core/commit/?id=f6e47aa9b12f9ab61530c40e0343f451699d9077
-               '(substitute* "libcc1/configure"
-                  (("\\$gcc_cv_objdump -T")
-                   "$OBJDUMP_FOR_TARGET -T")))))
+               '(begin
+                  (substitute* "libcc1/configure"
+                    (("\\$gcc_cv_objdump -T")
+                     "$OBJDUMP_FOR_TARGET -T"))
+                  #t))))
     (inputs
      `(("isl" ,isl)
        ,@(package-inputs gcc-4.7)))))
@@ -468,13 +474,15 @@ Go.  It also includes runtime support libraries for these languages.")
               ;; This can be removed when gcc-6.5.0 is released.
               ;; https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81712
               (snippet
-               '(for-each
-                  (lambda (dir)
-                    (substitute* (string-append "libgcc/config/"
-                                                dir "/linux-unwind.h")
-                      (("struct ucontext") "ucontext_t")))
-                  '("aarch64" "alpha" "bfin" "i386" "m68k" "nios2"
-                    "pa" "sh" "tilepro" "xtensa")))))
+               '(begin
+                  (for-each
+                   (lambda (dir)
+                     (substitute* (string-append "libgcc/config/"
+                                                 dir "/linux-unwind.h")
+                       (("struct ucontext") "ucontext_t")))
+                   '("aarch64" "alpha" "bfin" "i386" "m68k" "nios2"
+                     "pa" "sh" "tilepro" "xtensa"))
+                  #t))))
     (inputs
      `(("isl" ,isl)
        ,@(package-inputs gcc-4.7)))))