variable expansion does not work in cache directories

bendavies · bendavies · commit d38cd86f0e9c · 2014-04-10T13:38:58.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -21,4 +21,4 @@ notifications:
 
 cache:
   directories:
-    - $COMPOSER_CACHE_DIR
+    - /home/travis/.composer/cache
