Fix appveyor build.

Our latest appveyor build failed with: ``` ghc-pkg.EXE: C:\sr\snapshots\141c7015\pkgdb\package.cache: you don't have permission to modify this file ``` According to commercialhaskell/stack#3492, "The likely workaround is to switch to GHC 8.2.1", so this moves to lts-10.6 (ghc 8.2.2).
joelburget · Feb 22, 2018 · 684feef · 684feef
1 parent d1f2892
commit 684feef
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/stack.yaml b/stack.yaml
@@ -1,6 +1,6 @@
 # stack yaml for ghc builds
 
-resolver: lts-8.15
+resolver: lts-10.6
 
 packages:
 - '.'