Hi HiPhish! I'm also interested in packaging this! I'll give it a closer look real soon if you are stuck. > https://pastebin.com/FyJKK6BD It's better if you paste the whole build log. In the guix environment, inspect the C_INCLUDE_PATH variable (e.g. "env | grep C_INCLUDE_PATH"), check if sdl2-mixer is in there. Otherwise try passing "-DSDL_TARGET=2" to the #:make-flags, that could do it. -- Pierre Neidhardt https://ambrevar.xyz/