Ok I have found the solution, I forgot to also do
b.installArtifact(raylib_artifact);
and for my own library header it was simply
lib.installHeadersDirectory(b.path("src"), "", .{});
So anyway problem solved
Ok I have found the solution, I forgot to also do
b.installArtifact(raylib_artifact);
and for my own library header it was simply
lib.installHeadersDirectory(b.path("src"), "", .{});
So anyway problem solved