gloss VS glut

That Picture type is what does all the heavy lifting. Have you read its Haddocks already? There's an example using play in gloss-examples if it helps you (it just renders the most recent event as text on the screen). When I was new to Haskell and gloss, I found "following the types" helped. There's only a limited amount of things you can do with Picture, and those limitations can help guide you.

Haskell is the purest of the pure, and a fun language. Never done graphics with it but I see Gloss looks decent - https://github.com/benl23x5/gloss.

If you just want to draw stuff on a window, then have a look at gloss (a very simple yet useful interface to OpenGL) and sdl2 (which gives bindings to the SDL library).

This question is in the gloss FAQ:

Ideally, I'd like something like gloss in Haskell.

I cant find glut in any of the fedora repos so you should download it straight from https://github.com/markkilgard/glut. Also theres a project called freeglut which is in the repos which u can download by just running `dnf install freeglut-devel` its basically a close enough re implementation of glut thats opensource.

Look at what happened to GLUT. Because of the license that forbids modification (and the project being de-facto abandoned by its original author) people will generally choose to use FreeGLUT which has more permissive licensed, and the original GLUT is slowly being forgotten. (Different license requirements, but you get my point.)