disable clang temporarily

.travis.yml

@@ -1,7 +1,8 @@
 language: c
 compiler:
   - gcc
-  - clang
+# TODO: re-enable clang once libxkbcommon >= 0.5.0 can be installed from packages. Compiling libxkbcommon with clang fails in the libtool step.
+#  - clang
 before_install:
   # The travis VMs run on Ubuntu 12.04 which is very old and a huge pain to get
   # into a state where we can build a recent version of i3status :(.