System: Mac OS X Big Sur
ghc : 8.8.4
cabal: 3.2.0.0
I can install all gloss-examples and run without issues.
But when I use makelens ''Foo
It suddenly complains:
<command line>: can't load framework: OpenGL (not found)
I tried with microlens
and same behavior.
Why?
Below are the codes I've used:
{-# LANGUAGE TemplateHaskell #-}
import Control.Lens hiding (element)
import Graphics.Gloss
import Graphics.Gloss.Interface.Pure.Game
data ManGame = ManGame {
mgPic :: Picture,
mgX :: Float,
mgY :: Float
-- Add _mgKeyDown to have press and hold function
} deriving Show
--makeLenses ''ManGame
This works. But if I uncommented the last line, it reports error during compilation.
For the cabal file(I've used the same as with other gloss-examples programs):
Executable gloss-game
Main-is: Main.hs
hs-source-dirs: picture/Game
Build-depends:
base >= 4.8 && < 5
, lens
, gloss == 1.13.*
Default-Language:
Haskell2010
ghc-options:
-O2
-Wall
-threaded
-rtsopts