Cache .stack-work in Travis script

I noticed that significant amount of the time on Travis is spent building library dependencies. This line should allow `stack` to cache the `extra-deps` libraries.
yesodweb · Oct 22, 2017 · 497a496 · 497a496
1 parent bddb397
commit 497a496
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/.travis.yml b/.travis.yml
@@ -46,6 +46,7 @@ script: travis/run.sh
 cache:
   directories:
   - $HOME/.stack
+  - .stack-work
 
 
 # zookeeper doesn't seem to work any more