Actually I found that to be one of the major strength, it encouraged me to look into how the corresponding Linux API's work and made me realize that it isn't al

Actually I found that to be one of the major strength, it encouraged me to look into how the corresponding Linux API's work and made me realize that it isn't all that hard to get something like an OpenGL window (at least if you use GLEW) with basic input working. Even something like the dynamic code reloading he does by using Windows API calls, can be ported fairly trivially to Linux.