diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..563996e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.ibc
diff --git a/sdl.ipkg b/sdl.ipkg
index 9dbcf06..9bc750f 100644
--- a/sdl.ipkg
+++ b/sdl.ipkg
@@ -2,10 +2,8 @@ package sdl
 
 sourcedir = src
 modules = Graphics.SDL, Graphics.Config, Effect.SDL
-opts = "-p effects" 
+opts = "-p effects"
 
 makefile = MakefileSDLC
 
 objs = sdlrun.o, sdlrun.h
-libs = SDL, SDL_gfx
-
diff --git a/src/Effect/SDL.idr b/src/Effect/SDL.idr
index bc97a90..69c2af0 100644
--- a/src/Effect/SDL.idr
+++ b/src/Effect/SDL.idr
@@ -3,35 +3,45 @@ module Effect.SDL
 import Effects
 import public Graphics.SDL
 
-Srf : Type
-Srf = SDLSurface
-
+public export
 data Colour = MkCol Int Int Int Int
 
+export
 black : Colour
 black = MkCol 0 0 0 255
 
+export
 white : Colour
 white = MkCol 255 255 255 255
 
+export
 red : Colour
 red = MkCol 255 0 0 255
 
+export
 green : Colour
 green = MkCol 0 255 0 255
 
+export
 blue : Colour
 blue = MkCol 0 0 255 255
 
+export
 yellow : Colour
 yellow = MkCol 255 255 0 255
 
+export
 cyan : Colour
 cyan = MkCol 0 255 255 255
 
+export
 magenta : Colour
 magenta = MkCol 255 0 255 255
 
+Srf : Type
+Srf = SDLSurface
+
+export
 data Sdl : Effect where
      Initialise : Int -> Int -> Sdl () () (\v => Srf)
      Quit : Sdl () Srf (\v => ())
@@ -46,39 +56,47 @@ Handler Sdl IO where
 
      handle s Flip k = do flipBuffers s; k () s
      handle s Poll k = do x <- pollEvent; k x s
-     handle s (WithSurface f) k = do r <- f s; k r s 
+     handle s (WithSurface f) k = do r <- f s; k r s
 
+public export
 SDL : Type -> EFFECT
 SDL res = MkEff res Sdl
 
+public export
 SDL_ON : EFFECT
 SDL_ON = SDL SDLSurface
 
-initialise : Int -> Int -> { [SDL ()] ==> [SDL_ON] } Eff () 
+export
+initialise : Int -> Int -> { [SDL ()] ==> [SDL_ON] } Eff ()
 initialise x y = call $ Initialise x y
 
-quit : { [SDL_ON] ==> [SDL ()] } Eff () 
+export
+quit : { [SDL_ON] ==> [SDL ()] } Eff ()
 quit = call Quit
 
+export
 flip : { [SDL_ON] } Eff ()
 flip = call Flip
 
-poll : { [SDL_ON] } Eff (Maybe Event) 
+export
+poll : { [SDL_ON] } Eff (Maybe Event)
 poll = call Poll
 
+export
 getSurface : { [SDL_ON] } Eff SDLSurface
 getSurface = call $ WithSurface (\s => return s)
 
-rectangle : Colour -> Int -> Int -> Int -> Int -> { [SDL_ON] } Eff () 
-rectangle (MkCol r g b a) x y w h 
+export
+rectangle : Colour -> Int -> Int -> Int -> Int -> { [SDL_ON] } Eff ()
+rectangle (MkCol r g b a) x y w h
      = call $ WithSurface (\s => filledRect s x y w h r g b a)
 
-ellipse : Colour -> Int -> Int -> Int -> Int -> { [SDL_ON] } Eff () 
-ellipse (MkCol r g b a) x y rx ry 
+export
+ellipse : Colour -> Int -> Int -> Int -> Int -> { [SDL_ON] } Eff ()
+ellipse (MkCol r g b a) x y rx ry
      = call $ WithSurface (\s => filledEllipse s x y rx ry r g b a)
 
-line : Colour -> Int -> Int -> Int -> Int -> { [SDL_ON] } Eff () 
-line (MkCol r g b a) x y ex ey 
+export
+line : Colour -> Int -> Int -> Int -> Int -> { [SDL_ON] } Eff ()
+line (MkCol r g b a) x y ex ey
      = call $ WithSurface (\s => drawLine s x y ex ey r g b a)
-
-
diff --git a/src/Graphics/Config.idr b/src/Graphics/Config.idr
new file mode 100644
index 0000000..c39260d
--- /dev/null
+++ b/src/Graphics/Config.idr
@@ -0,0 +1,2 @@
+%flag C "-L/usr/local/Cellar/sdl_gfx/2.0.25/lib -L/usr/local/lib -lSDL_gfx -lSDLmain -lSDL -Wl,-framework,Cocoa"
+%flag C "-D_GNU_SOURCE=1 -D_THREAD_SAFE -I/usr/local/Cellar/sdl_gfx/2.0.25/include/SDL -I/usr/local/include/SDL"
diff --git a/src/Graphics/SDL.idr b/src/Graphics/SDL.idr
index 940a658..cbfda6d 100644
--- a/src/Graphics/SDL.idr
+++ b/src/Graphics/SDL.idr
@@ -3,26 +3,24 @@ module Graphics.SDL
 import Graphics.Config
 
 %include C "sdlrun.h"
-%include C "SDL/SDL.h"
 %link C "sdlrun.o"
-%lib C "SDL_gfx"
 
 -- Set up a window
 
-abstract 
+export
 data SDLSurface = MkSurface Ptr
 
-public
+export
 startSDL : Int -> Int -> IO SDLSurface
 startSDL x y = do ptr <- do_startSDL
 		  return (MkSurface ptr)
   where do_startSDL = foreign FFI_C "startSDL" (Int -> Int -> IO Ptr) x y
 
-public
+export
 endSDL : IO ()
 endSDL = foreign FFI_C "SDL_Quit" (IO ())
 
-public
+export
 flipBuffers : SDLSurface -> IO ();
 flipBuffers (MkSurface ptr) 
      = foreign FFI_C "flipBuffers" (Ptr -> IO ()) ptr
@@ -30,7 +28,7 @@ flipBuffers (MkSurface ptr)
 
 -- Some drawing primitives
 
-public
+export
 filledRect : SDLSurface -> Int -> Int -> Int -> Int ->
                            Int -> Int -> Int -> Int -> IO ()
 filledRect (MkSurface ptr) x y w h r g b a 
@@ -38,7 +36,7 @@ filledRect (MkSurface ptr) x y w h r g b a
            (Ptr -> Int -> Int -> Int -> Int ->
             Int -> Int -> Int -> Int -> IO ()) ptr x y w h r g b a
 
-public
+export
 filledEllipse : SDLSurface -> Int -> Int -> Int -> Int ->
                               Int -> Int -> Int -> Int -> IO ()
 filledEllipse (MkSurface ptr) x y rx ry r g b a 
@@ -46,7 +44,7 @@ filledEllipse (MkSurface ptr) x y rx ry r g b a
            (Ptr -> Int -> Int -> Int -> Int ->
             Int -> Int -> Int -> Int -> IO ()) ptr x y rx ry r g b a
 
-public
+export
 drawLine : SDLSurface -> Int -> Int -> Int -> Int ->
                          Int -> Int -> Int -> Int -> IO ()
 drawLine (MkSurface ptr) x y ex ey r g b a 
@@ -57,7 +55,7 @@ drawLine (MkSurface ptr) x y ex ey r g b a
 -- TODO: More keys still to add... careful to do the right mappings in
 -- KEY in sdlrun.c
 
-public
+public export
 data Key = KeyUpArrow
          | KeyDownArrow
 	 | KeyLeftArrow
@@ -120,7 +118,7 @@ Eq Key where
   (KeyAny x)    == (KeyAny y)     = x == y
   _             == _              = False
 
-public
+public export
 data Button = Left | Middle | Right | WheelUp | WheelDown
 
 Eq Button where
@@ -131,7 +129,7 @@ Eq Button where
   WheelDown == WheelDown = True
   _ == _ = False
 
-public
+public export
 data Event = KeyDown Key
            | KeyUp Key
            | MouseMotion Int Int Int Int
@@ -152,10 +150,9 @@ Eq Event where
       = b == b' && x == x' && y == y'
   _           == _           = False
 
-public
+export
 pollEvent : IO (Maybe Event)
 pollEvent 
     = do MkRaw e <- 
             foreign FFI_C "pollEvent" (Ptr -> IO (Raw (Maybe Event))) prim__vm
          return e
-
diff --git a/src/MakefileSDLC b/src/MakefileSDLC
index 5209312..faba77f 100644
--- a/src/MakefileSDLC
+++ b/src/MakefileSDLC
@@ -1,11 +1,11 @@
 CC = gcc
-CFLAGS = `idris --include` `sdl-config --cflags`
+CFLAGS = `idris --include` `pkg-config --cflags SDL_gfx`
 
 sdlrun.o: config sdlrun.c sdlrun.h
 
 config: .PHONY
-	echo "%flag C \"`sdl-config --libs`\"" > Graphics/Config.idr
-	echo "%flag C \"`sdl-config --cflags`\"" >> Graphics/Config.idr
+	echo "%flag C \"`pkg-config --libs SDL_gfx`\"" > Graphics/Config.idr
+	echo "%flag C \"`pkg-config --cflags SDL_gfx`\"" >> Graphics/Config.idr
 
 clean: .PHONY
 	rm sdlrun.o
diff --git a/src/sdlrun.h b/src/sdlrun.h
index 71f478a..35b7d1e 100644
--- a/src/sdlrun.h
+++ b/src/sdlrun.h
@@ -1,8 +1,6 @@
 #ifndef __SDLRUN_H
 #define __SDLRUN_H
 
-#include <idris_rts.h>
-
 // Start SDL, open a window with dimensions (x,y)
 void* startSDL(int x, int y);
 
@@ -19,6 +17,6 @@ void drawLine(void* s_in,
 	      int r, int g, int b, int a);
 
 // Events
-void* pollEvent(VM* vm); // builds an Idris value
+void* pollEvent(void* vm); // builds an Idris value
 
 #endif
diff --git a/test/.gitignore b/test/.gitignore
new file mode 100644
index 0000000..bbaa5c4
--- /dev/null
+++ b/test/.gitignore
@@ -0,0 +1,3 @@
+etest
+simple
+test
diff --git a/test/Makefile b/test/Makefile
new file mode 100644
index 0000000..acee4c7
--- /dev/null
+++ b/test/Makefile
@@ -0,0 +1,14 @@
+.PHONY: all
+all: etest test
+
+.PHONY: etest
+etest:
+	idris --build etest.ipkg
+
+.PHONY: simple
+simple:
+	idris --build simple.ipkg
+
+.PHONY: test
+test:
+	idris --build test.ipkg
diff --git a/test/etest.idr b/test/etest.idr
index 1521eb0..3cdb5f4 100644
--- a/test/etest.idr
+++ b/test/etest.idr
@@ -1,7 +1,7 @@
 module Main
 
 {- Test program for SDL effect - draws a rectangle and an ellipse on a
-scrolling starfield background, with the position of the ellipse 
+scrolling starfield background, with the position of the ellipse
 controlled by the arrow keys -}
 
 import Effects
@@ -26,28 +26,28 @@ data Vars = Position -- position of ellipse
 -- generation and console I/O
 
 Prog : Type -> Type -> Type
-Prog i t = Eff IO [SDL i, 
-                   Position ::: STATE (Int, Int), 
-                   XMove ::: STATE Int,
-                   YMove ::: STATE Int,
-                   Frames ::: STATE Integer,
-                   Starfield ::: STATE (List (Int, Int)),
-                   RND,
-                   STDIO] t
+Prog i t = Eff t [SDL i,
+                  Position ::: STATE (Int, Int),
+                  XMove ::: STATE Int,
+                  YMove ::: STATE Int,
+                  Frames ::: STATE Integer,
+                  Starfield ::: STATE (List (Int, Int)),
+                  RND,
+                  STDIO]
 
 -- Convenient shorthand for initialised SDL
 Running : Type -> Type
 Running t = Prog SDLSurface t
 
-initStarfield : List (Int, Int) -> Int -> Eff m [RND] (List (Int, Int))
+initStarfield : List (Int, Int) -> Int -> Eff (List (Int, Int)) [RND]
 initStarfield acc 0 = return acc
 initStarfield acc n = do x <- rndInt 0 639
                          y <- rndInt 0 479
                          initStarfield ((fromInteger x, fromInteger y) :: acc) (n - 1)
 
-updateStarfield : List (Int, Int) -> Eff m [RND] (List (Int, Int))
+updateStarfield : List (Int, Int) -> Eff (List (Int, Int)) [RND]
 updateStarfield xs = upd [] xs where
-  upd : List (Int, Int) -> List (Int, Int) -> Eff m [RND] (List (Int, Int))
+  upd : List (Int, Int) -> List (Int, Int) -> Eff (List (Int, Int)) [RND]
   upd acc [] = return acc
   upd acc ((x, y) :: xs)
       = if (y > 479) then do
@@ -56,7 +56,7 @@ updateStarfield xs = upd [] xs where
            else
              upd ((x, y+1) :: acc) xs
 
-drawStarfield : List (Int, Int) -> Eff IO [SDL_ON] ()
+drawStarfield : List (Int, Int) -> Eff () [SDL_ON]
 drawStarfield [] = return ()
 drawStarfield ((x, y) :: xs) = do line white x y x y
                                   drawStarfield xs
@@ -132,12 +132,11 @@ emain = do initialise 640 480
                        when continue eventLoop
 
 main : IO ()
-main = run [(), Position := (320,200), 
-                XMove := 0, 
-                YMove := 0, 
+main = runInit [SDL (),
+                Position := (320,200),
+                XMove := 0,
+                YMove := 0,
                 Frames := 0,
                 Starfield := List.Nil,
                 1234567890,
                 ()] emain
-
-
diff --git a/test/etest.ipkg b/test/etest.ipkg
new file mode 100644
index 0000000..4c5c7fa
--- /dev/null
+++ b/test/etest.ipkg
@@ -0,0 +1,6 @@
+package etest
+
+pkgs = effects, sdl
+
+main = etest
+executable = etest
diff --git a/test/simple.idr b/test/simple.idr
new file mode 100644
index 0000000..7e44c45
--- /dev/null
+++ b/test/simple.idr
@@ -0,0 +1,18 @@
+module Main
+
+import Graphics.SDL
+
+main : IO ()
+main = (do
+  surface <- startSDL 640 480
+  rest surface)
+    where
+      rest : SDLSurface -> IO ()
+      rest surface = do
+        filledRect surface 100 100 50 50 255 0 0 128
+        flipBuffers surface
+        event <- pollEvent
+        case event of
+          Just (KeyDown KeyEscape) => pure ()
+          Just (AppQuit) => pure ()
+          _ => rest surface
diff --git a/test/simple.ipkg b/test/simple.ipkg
new file mode 100644
index 0000000..0c360db
--- /dev/null
+++ b/test/simple.ipkg
@@ -0,0 +1,6 @@
+package test
+
+pkgs = effects, sdl
+
+main = simple
+executable = simple
diff --git a/test/test.idr b/test/test.idr
index d1332c0..211bbfb 100644
--- a/test/test.idr
+++ b/test/test.idr
@@ -15,7 +15,7 @@ main = do surface <- startSDL 640 480
                              filledRect s 0 0 640 480 0 0 0 128
                              filledRect s 100 100 50 50 255 0 0 128
                              filledEllipse s x y 20 20 0 255 0 128
-                             when ((f `mod` 100) == 0) $ print f
+                             when ((f `mod` 100) == 0) $ printLn f
                              flipBuffers s
                              processEvent s (f+1) (x+mx) (y+my) mx my event
 
@@ -40,11 +40,9 @@ main = do surface <- startSDL 640 480
                 = do print k
                      eventLoop s f x y mx my
         processEvent s f x y mx my (Just (MouseMotion mousex mousey _ _))
-                = do print (mousex, mousey)
+                = do printLn (mousex, mousey)
                      eventLoop s f x y mx my
         processEvent s f x y mx my (Just (MouseButtonUp Left mousex mousey))
-                = do print (mousex, mousey)
+                = do printLn (mousex, mousey)
                      eventLoop s f mousex mousey mx my
         processEvent s f x y mx my _ = eventLoop s f x y mx my
-
-
diff --git a/test/test.ipkg b/test/test.ipkg
new file mode 100644
index 0000000..1e91934
--- /dev/null
+++ b/test/test.ipkg
@@ -0,0 +1,6 @@
+package test
+
+pkgs = effects, sdl
+
+main = test
+executable = test