Noticed on fheroes2 package: before the change fheroes2 was not able to
play MIDI samples and complained as:
PlayMusic: music parameter was NULL
It happens because default search paths for 'timidity.cfg'
did not include any of nixos's paths in 'timidity/options.h':
getenv("TIMIDITY_CFG")
"."
#define DEFAULT_PATH "/etc/timidity"
#define DEFAULT_PATH1 "/usr/share/timidity"
#define DEFAULT_PATH2 "/usr/local/share/timidity"
#define DEFAULT_PATH3 "/usr/local/lib/timidity"
As a result even with globally installed timidity MIDI can't be played.
abuse package also has the same problem and works it around by changing
directory to local copy of 'timidity.cfg':
# The timidity bundled into SDL_mixer looks in . and in several global places
# like /etc for its configuration file.
cd @out@/etc
exec @out@/bin/.abuse-bin "$@"
The change fixes SDL2_mixer by changing "/usr/share/timidity" path
to nix's timidity store path. Tested on fheroes2 with MIDI files.