Update shake bounds of install script

install/hls-install.cabal

@@ -1,40 +1,47 @@
-name:                hls-install
-version:             0.8.0.0
-synopsis:            Install the haskell-language-server
-license:             BSD3
-author:              Many, TBD when we release
-maintainer:          samuel.pilz@posteo.net
-copyright:           2019
-build-type:          Simple
-cabal-version:       >=2.0
+name:          hls-install
+version:       0.8.0.0
+synopsis:      Install the haskell-language-server
+license:       BSD3
+author:        Many, TBD when we release
+maintainer:    samuel.pilz@posteo.net
+copyright:     2019
+build-type:    Simple
+cabal-version: >=2.0
 
 library
-  hs-source-dirs:      src
-  exposed-modules:     HlsInstall
-  other-modules:       BuildSystem
-                     , Stack
-                     , Version
-                     , Cabal
-                     , Print
-                     , Env
-                     , Help
-  build-depends:       base >= 4.9 && < 5
-                     , shake >= 0.16.4 && < 0.19
-                     , directory
-                     , filepath
-                     , extra
-                     , text
-  default-extensions: LambdaCase
-                    , TupleSections
-                    , RecordWildCards
-  default-language:    Haskell2010
+  hs-source-dirs:     src
+  exposed-modules:    HlsInstall
+  other-modules:
+    BuildSystem
+    Cabal
+    Env
+    Help
+    Print
+    Stack
+    Version
+
+  build-depends:
+      base       >=4.9    && <5
+    , directory
+    , extra
+    , filepath
+    , shake      >=0.17.5
+    , text
+
+  default-extensions:
+    LambdaCase
+    RecordWildCards
+    TupleSections
+
+  default-language:   Haskell2010
 
   if flag(run-from-stack)
-    cpp-options:       -DRUN_FROM_STACK
+    cpp-options: -DRUN_FROM_STACK
+
   else
     build-depends: cabal-install-parsers
 
 flag run-from-stack
-  description:         Inform the application that it is run from stack
-  default:             False
-  manual:              True
+  description: Inform the application that it is run from stack
+  default:     False
+  manual:      True