Update stack.yaml to use current nightly.

Need to override optparse-simple, else we git a git hash problem.

Author: alanz

stack.yaml

@@ -1,4 +1,4 @@
-resolver: nightly-2018-12-01 # GHC 8.6.2
+resolver: nightly-2018-12-27 # GHC 8.6.3
 packages:
 - .
 - hie-plugin-api
@@ -10,7 +10,6 @@ extra-deps:
 - ./submodules/ghc-mod
 - ./submodules/ghc-mod/core
 
-- apply-refact-0.6.0.0
 - butcher-1.3.2.1
 - cabal-plan-0.4.0.0
 - constrained-dynamic-0.1.0.0
@@ -20,31 +19,17 @@ extra-deps:
 - hsimport-0.8.6
 - monad-memo-0.4.1
 - multistate-0.8.0.1
-- resolv-0.1.1.2
-- lsp-test-0.5.0.2
-- pretty-show-1.8.2
+- optparse-simple-0.1.0
 - syz-0.2.0.0
 - temporary-1.2.1.1
 - yaml-0.8.32
 
 
-
-
 flags:
   haskell-ide-engine:
     pedantic: true
   hie-plugin-api:
     pedantic: true
-  # ekg-core:
-  #   allow-newer: true
-  # ekg-json:
-  #   allow-newer: true
-  # ekg-wai:
-  #   allow-newer: true
-  # base:
-  #   allow-newer: true
-  # process:
-  #   allow-newer: true
 
 # allow-newer: true