tests/niminaction/Chapter8/sdl/sdl_test.nim fails on NetBSD

[euantorano]

The test tests/niminaction/Chapter8/sdl/sdl_test.nim fails on NetBSD with the following error:

Category: niminaction
Name: tests/niminaction/Chapter8/sdl/sdl_test.nim C --nilseqs:on
Action: compile
Result: reNimcCrash
-------- Expected -------

--------- Given  --------
$ /home/euant/Nim/bin/nim c --hints:on -d:testing --nimblePath:tests/deps --nils                                                                                           eqs:on --nimCache:nimcache/tests/niminaction/Chapter8/sdl/sdl_test.nim_22e00266e                                                                                           4109c0b56c15164c94e87a4 --stdout '--hint[Path]:off' '--hint[Processing]:off' tes                                                                                           ts/niminaction/Chapter8/sdl/sdl_test.nim
Hint: used config file '/home/euant/Nim/config/nim.cfg' [Conf]
Hint: used config file '/home/euant/Nim/config/config.nims' [Conf]
Hint: used config file '/home/euant/Nim/tests/config.nims' [Conf]
sdl.nim(10, 10) Error: SDL library name not set for this platform

Note: No CI service supports NetBSD at the moment as far as I'm aware, but I'm running the tests locally so that we can add future CI integration.