gnu: Use the 'patches' field of <origin>.

* gnu/packages/apr.scm,
  gnu/packages/autotools.scm,
  gnu/packages/avahi.scm,
  gnu/packages/cdrom.scm,
  gnu/packages/cmake.scm,
  gnu/packages/cpio.scm,
  gnu/packages/cross-base.scm,
  gnu/packages/emacs.scm,
  gnu/packages/flex.scm,
  gnu/packages/fontutils.scm,
  gnu/packages/glib.scm,
  gnu/packages/grub.scm,
  gnu/packages/guile.scm,
  gnu/packages/idutils.scm,
  gnu/packages/libevent.scm,
  gnu/packages/linux.scm,
  gnu/packages/mail.scm,
  gnu/packages/make-bootstrap.scm,
  gnu/packages/mp3.scm,
  gnu/packages/oggvorbis.scm,
  gnu/packages/pdf.scm,
  gnu/packages/plotutils.scm,
  gnu/packages/qemu.scm,
  gnu/packages/recutils.scm,
  gnu/packages/rush.scm,
  gnu/packages/scheme.scm,
  gnu/packages/system.scm,
  gnu/packages/tcsh.scm,
  gnu/packages/valgrind.scm,
  gnu/packages/vpn.scm,
  gnu/packages/w3m: Use the 'patches' field of <origin> instead of
  adding a patch as input plus using #:patches.

1 files changed, 3 insertions, 6 deletions

diff --git a/gnu/packages/libevent.scm b/gnu/packages/libevent.scm
index 8f2d5dad46..dce1ac1a69 100644
--- a/gnu/packages/libevent.scm
+++ b/gnu/packages/libevent.scm
@@ -37,16 +37,13 @@
                    "-stable.tar.gz"))
              (sha256
               (base32
-               "1xblymln9vihdmf1aqkp8chwvnhpdch3786bh30bj75slnl31992"))))
+               "1xblymln9vihdmf1aqkp8chwvnhpdch3786bh30bj75slnl31992"))
+             (patches (list (search-patch "libevent-dns-tests.patch")))))
     (build-system gnu-build-system)
     (inputs
-     `(("patch/dns-tests" ,(search-patch "libevent-dns-tests.patch"))
-
-       ;; Dependencies used for the tests and for `event_rpcgen.py'.
+     `(;; Dependencies used for the tests and for `event_rpcgen.py'.
        ("which" ,which)
        ("python" ,python-wrapper)))
-    (arguments
-     '(#:patches (list (assoc-ref %build-inputs "patch/dns-tests"))))
     (home-page "http://libevent.org/")
     (synopsis
      "libevent, an event notification library")