enable cpphs for conditional compilations

package.yaml

@@ -34,6 +34,9 @@ dependencies:
 - http-types
 - warp
 
+build-tools:
+- cpphs
+
 executables:
   tickLeisteServer:
     main:                Main.hs
@@ -42,6 +45,9 @@ executables:
     - -threaded
     - -rtsopts
     - -with-rtsopts=-N
+    - -cpp
+    - -pgmP cpphs
+    - -optP --cpp
 
 tests:
   tickLeisteServer-test:

tickLeisteServer.cabal

@@ -31,7 +31,9 @@ executable tickLeisteServer
       Paths_tickLeisteServer
   hs-source-dirs:
       app
-  ghc-options: -threaded -rtsopts -with-rtsopts=-N
+  ghc-options: -threaded -rtsopts -with-rtsopts=-N -cpp -pgmP cpphs -optP --cpp
+  build-tools:
+      cpphs
   build-depends:
       aeson
     , base >=4.7 && <5
@@ -56,6 +58,8 @@ test-suite tickLeisteServer-test
   hs-source-dirs:
       test
   ghc-options: -threaded -rtsopts -with-rtsopts=-N
+  build-tools:
+      cpphs
   build-depends:
       aeson
     , base >=4.7 && <5