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, 17 insertions, 13 deletions

diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index 24f402128c..25ef8ccad0 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -100,7 +100,8 @@
                 ;; in OCaml's directory in the store, which is read-only.
                 (substitute* "Makefile"
                   (("--prefix")
-                   "--libdir $(LIBDIR) --prefix")))))))
+                   "--libdir $(LIBDIR) --prefix"))
+                #t)))))
 
 ;; They also require almost the same set of arguments
 (define janestreet-arguments
@@ -781,7 +782,8 @@ libpanel, librsvg and quartz.")
             ;; Without the '-fix' argument, the html file produced does not
             ;; have functioning internal hyperlinks.
             (substitute* "doc/Makefile"
-              (("hevea unison") "hevea -fix unison"))))))
+              (("hevea unison") "hevea -fix unison"))
+            #t))))
     (build-system gnu-build-system)
     (outputs '("out"
                "doc"))                  ; 1.9 MiB of documentation
@@ -2196,17 +2198,19 @@ file (POSIX like) and filename.")
                 "1ln7vc7ip6s5xbi20mhnn087xi4a2m5vqawx0703qqnfkzhmslqy"))
             (modules '((guix build utils)))
             (snippet
-             '(substitute* "test/test-main/Test.ml"
-                ;; most of these tests fail because ld cannot find crti.o, but according
-                ;; to the log file, the environment variables {LD_,}LIBRARY_PATH
-                ;; are set correctly whene LD_LIBRARY_PATH is defined beforhand.
-                (("TestBaseCompat.tests;") "")
-                (("TestExamples.tests;") "")
-                (("TestFull.tests;") "")
-                (("TestPluginDevFiles.tests;") "")
-                (("TestPluginInternal.tests;") "")
-                (("TestPluginOCamlbuild.tests;") "")
-                (("TestPluginOMake.tests;") "")))))
+             '(begin
+                (substitute* "test/test-main/Test.ml"
+                  ;; most of these tests fail because ld cannot find crti.o, but according
+                  ;; to the log file, the environment variables {LD_,}LIBRARY_PATH
+                  ;; are set correctly whene LD_LIBRARY_PATH is defined beforhand.
+                  (("TestBaseCompat.tests;") "")
+                  (("TestExamples.tests;") "")
+                  (("TestFull.tests;") "")
+                  (("TestPluginDevFiles.tests;") "")
+                  (("TestPluginInternal.tests;") "")
+                  (("TestPluginOCamlbuild.tests;") "")
+                  (("TestPluginOMake.tests;") ""))
+                #t))))
     (build-system ocaml-build-system)
     (native-inputs
      `(("ocamlify" ,ocamlify)