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, 22 insertions, 20 deletions

diff --git a/gnu/packages/video.scm b/gnu/packages/video.scm
index bf5999177e..41d15558f0 100644
--- a/gnu/packages/video.scm
+++ b/gnu/packages/video.scm
@@ -303,15 +303,15 @@ H.264 (MPEG-4 AVC) video streams.")
         (base32
          "0hknnnnx9661igm1r73dc7aqxnnrl5a8yvyvr1nhd9ymn2klwpl5"))
        (modules '((guix build utils)))
-       (snippet
-        '(begin
-           ;; Delete bundled libraries.
-           (for-each delete-file-recursively
-                     '("lib/libebml"
-                       "lib/libmatroska"
-                       "lib/nlohmann-json"
-                       "lib/pugixml"
-                       "lib/utf8-cpp"))))))
+       (snippet '(begin
+                   ;; Delete bundled libraries.
+                   (for-each delete-file-recursively
+                             '("lib/libebml"
+                               "lib/libmatroska"
+                               "lib/nlohmann-json"
+                               "lib/pugixml"
+                               "lib/utf8-cpp"))
+                   #t))))
     (build-system gnu-build-system)
     (inputs
      `(("boost" ,boost)
@@ -387,8 +387,9 @@ and creating Matroska files from other media files (@code{mkvmerge}).")
          (base32
           "1gyd94jkwdii9308m07nymsbxrmrcl81c0j8i10zhslr2mj07w0v"))
         (modules '((guix build utils)))
-        (snippet
-         '(delete-file-recursively "source/compat/getopt"))))
+        (snippet '(begin
+                    (delete-file-recursively "source/compat/getopt")
+                    #t))))
     (build-system cmake-build-system)
     (arguments
      `(#:tests? #f ; tests are skipped if cpu-optimized code isn't built
@@ -1794,10 +1795,10 @@ from sites like Twitch.tv and pipes them into a video player of choice.")
                (base32
                 "10m3ry0b2pvqx3bk34qh5dq337nn8pkc2gzfyhsj4nv9abskln47"))
               (modules '((guix build utils)))
-              (snippet
-               ;; As of glibc 2.26, <xlocale.h> no longer is.
-               '(substitute* "src/framework/mlt_property.h"
-                  (("xlocale\\.h") "locale.h")))))
+              (snippet '(begin
+                          ;; As of glibc 2.26, <xlocale.h> no longer is.
+                          (substitute* "src/framework/mlt_property.h"
+                            (("xlocale\\.h") "locale.h"))))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f ; no tests
@@ -1983,7 +1984,8 @@ implementation.")
           "1x2ag1f2fwa4yh1g5spv99w9x1m33hbxlqwyhm205ssq0ra234bx"))
         (patches (search-patches "libvdpau-va-gl-unbundle.patch"))
         (modules '((guix build utils)))
-        (snippet '(delete-file-recursively "3rdparty"))))
+        (snippet '(begin (delete-file-recursively "3rdparty")
+                         #t))))
     (build-system cmake-build-system)
     (arguments
      '(#:tests? #f)) ; Tests require a running X11 server, with VA-API support.
@@ -2495,10 +2497,10 @@ many codecs and formats supported by libmediainfo.")
                (base32
                 "0f5kxpayqn3yhabqrd2cqlc74i6x2xr01jfkank1lcilxnfyrsnq"))
               (modules '((guix build utils)))
-              (snippet
-               ;; As of glibc 2.26, <xlocale.h> no longer is.
-               '(substitute* "liveMedia/include/Locale.hh"
-                  (("xlocale\\.h") "locale.h")))))
+              (snippet '(begin
+                          ;; As of glibc 2.26, <xlocale.h> no longer is.
+                          (substitute* "liveMedia/include/Locale.hh"
+                            (("xlocale\\.h") "locale.h"))))))
     (build-system gnu-build-system)
     (arguments
      '(#:tests? #f ; no tests