gnu: Use invoke and return #t from all builders.

* gnu/packages/admin.scm, gnu/packages/android.scm, gnu/packages/audio.scm,
gnu/packages/avr.scm, gnu/packages/base.scm, gnu/packages/bioinformatics.scm,
gnu/packages/certs.scm, gnu/packages/check.scm, gnu/packages/code.scm,
gnu/packages/commencement.scm, gnu/packages/dictionaries.scm,
gnu/packages/docbook.scm, gnu/packages/emacs.scm, gnu/packages/embedded.scm,
gnu/packages/fonts.scm, gnu/packages/games.scm, gnu/packages/gnome.scm,
gnu/packages/gnu-doc.scm, gnu/packages/guile.scm, gnu/packages/hurd.scm,
gnu/packages/javascript.scm, gnu/packages/libreoffice.scm,
gnu/packages/linux.scm, gnu/packages/lisp.scm, gnu/packages/lxde.scm,
gnu/packages/mail.scm, gnu/packages/markup.scm, gnu/packages/mate.scm,
gnu/packages/pkg-config.scm, gnu/packages/qt.scm, gnu/packages/rust.scm,
gnu/packages/scheme.scm, gnu/packages/sdl.scm, gnu/packages/statistics.scm,
gnu/packages/syncthing.scm, gnu/packages/tex.scm, gnu/packages/web.scm,
gnu/packages/wine.scm, gnu/packages/xfce.scm: In the builders of packages
using 'trivial-build-system', use invoke where appropriate, raise exceptions
on errors, and otherwise return #t.

1 files changed, 2 insertions, 1 deletions

diff --git a/gnu/packages/rust.scm b/gnu/packages/rust.scm
index 7d0eb70875..69d329bf9a 100644
--- a/gnu/packages/rust.scm
+++ b/gnu/packages/rust.scm
@@ -206,7 +206,8 @@ manager, which is required to build itself.")
            ;; binaries expect a compiler called cc. Thus symlink gcc
            ;; to cc.
            (symlink (string-append gcc "/bin/gcc")
-                    (string-append out "/bin/cc"))))))
+                    (string-append out "/bin/cc"))
+           #t))))
     (home-page "https://www.rust-lang.org")
     (synopsis "Rust bootstrapping meta package")
     (description "Meta package for a rust environment. Provides pre-compiled