msx-example

install nix

determinate nix installer has flakes and nix-command enabled out of the box, otherwise you have to enable them manually. So I recommend the easy way of installing nix like this with everything set up:

curl -fsSL https://install.determinate.systems/nix | sh -s -- install --determinate --no-confirm

build rom

nix shell nixpkgs#z88dk --command zcc +msx -create-app -subtype=rom -o main main.c

run rom

openmsx ./main.rom