Compiling a module is still a lot more straight-forward than recompiling the whole of Nginx, which is probably the main obstacle to people using it (at least it is in my case).

Cool. We're working now to make this possible.

(And, in fact, to work at all when compiling against 1.9.11, since the addition of dynamic modules broke us: https://github.com/pagespeed/ngx_pagespeed/issues/1110 )

Piotr is working his magic for ngx_pagespeed 1.10 https://github.com/pagespeed/ngx_pagespeed/issues/1114 just need a patch for 1.9 branch too