prior using diagrams's vectors and points throughout

image-triangles.cabal

@@ -54,19 +54,34 @@ executable image-triangles
   other-modules: Render, Triangles
 
   -- LANGUAGE extensions used by modules in this package.
-  other-extensions:    TupleSections
+  default-extensions:  ScopedTypeVariables,
+                       OverloadedStrings,
+                       TemplateHaskell,
+                       DataKinds,
+                       FlexibleContexts,
+                       FlexibleInstances,
+                       MultiParamTypeClasses,
+                       OverloadedLabels,
+                       TypeFamilies,
+                       TupleSections,
+                       UndecidableInstances,
+                       RecursiveDo,
+                       RecordWildCards,
+                       RankNTypes,
+                       DuplicateRecordFields
 
   -- Other library packages from which modules are imported.
   build-depends:       base
                      , random
                      , hip
+                     , vector-th-unbox
                      , colour
                      , diagrams-lib
                      , diagrams-svg
                      , parallel
                      , repa
                      , vector
-                     , vector-th-unbox
+                     , scotty
 
 
   -- Directories containing source files.
@@ -78,4 +93,4 @@ executable image-triangles
                -rtsopts
 --               -prof
 --               -fexternal-interpreter
---               -fprof-auto
+--               import Servant.Client