gnu: ibus-anthy: Update to 1.5.15.

* gnu/packages/ibus.scm (ibus-anthy): Update to 1.5.15.
* gnu/packages/patches/ibus-anthy-fix-tests.patch: Update patch.

gnu/packages/ibus.scm

@@ -349,7 +349,7 @@ (define-public libpinyin
 (define-public ibus-anthy
   (package
     (name "ibus-anthy")
-    (version "1.5.14")
+    (version "1.5.15")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -357,13 +357,13 @@ (define-public ibus-anthy
                     version "/ibus-anthy-" version ".tar.gz"))
               (sha256
                (base32
-                "16vd0k8wm13s38869jqs3dnwmjvywgn0snnpyi41m28binhlssf8"))
+                "12yrgqiq6mqc8jr49dgkk3d7mdnyqic4xs597biwjjkahgaydi2q"))
               (patches (search-patches "ibus-anthy-fix-tests.patch"))))
     (build-system glib-or-gtk-build-system)
     (arguments
      (list
       ;; The test suite hangs (see:
-      ;; https://github.com/ibus/ibus-anthy/issues/28).
+      ;; https://github.com/ibus/ibus-anthy/pull/35).
       #:tests? #f
       #:configure-flags
       ;; Use absolute exec path in the anthy.xml.

gnu/packages/patches/ibus-anthy-fix-tests.patch

@@ -1,17 +1,14 @@
 Submitted upstream: https://github.com/ibus/ibus-anthy/pull/35
 
 diff --git a/tests/test-build.sh b/tests/test-build.sh
-index e83b78f..a0efe32 100755
+index e83b78f..bbfa7e1 100755
 --- a/tests/test-build.sh
 +++ b/tests/test-build.sh
-@@ -63,26 +63,27 @@ parse_args()
+@@ -63,26 +63,33 @@ parse_args()
      done;
  }
  
 +maybe_install_pycotap() {
-+    # Check if pycotap is already available.
-+    python3 -m pycotap >/dev/null && return 0
-+
 +    # Red Hat specific hint.
 +    if test -f /etc/redhat-release ; then
 +        if ! rpm -q --quiet python3-pycotap; then
@@ -19,6 +16,15 @@ index e83b78f..a0efe32 100755
 +            exit -1
 +        fi
 +    fi;
++
++    # Check if pycotap is already available.
++    if ! python3 -m pycotap >/dev/null; then
++        echo "pycotap not found; installing via pip"
++        if ! pip install pycotap --user; then
++            echo "failed to install pycotap"
++            exit -1
++        fi
++    fi
 +}
 +
  init_environment()