Update stackage

Author: hasufell

stack.yaml

@@ -1,4 +1,4 @@
-resolver: lts-7.14
+resolver: lts-18.23
 packages:
 - example-client
 - hackage-repo-tool
@@ -8,5 +8,11 @@ packages:
 - hackage-security-curl
 - hackage-security-http-client
 - precompute-fileinfo
+
+flags:
+  hackage-repo-tool:
+    use-old-time: false
+
 extra-deps:
-- http-client-0.5.5
+- optparse-applicative-0.15.1.0@sha256:29ff6146aabf54d46c4c8788e8d1eadaea27c94f6d360c690c5f6c93dac4b07e,4810
+