So far, this formalization project is only about synthetic algebraic geometry (see here for more on the subject). A good place to start is here.
In ~/.agda/libraries
there should be a line PATH/cubical.agda-lib
, where PATH is the path to the root of the clone of the cubical library you want to use.
Right now, this project builds on the current master branch of the cubical agda library (github).
The agda-mode (of Emacs) is not loaded for '.lagda.md'-files which we use here, so you might want to add something like the following to your .emacs (after agda-mode setup):
;; also load agda-mode for .lagda.md
(add-to-list 'auto-mode-alist '("\\.l?agda.md\\'" . agda2-mode))
(modify-coding-system-alist 'file "\\.l?agda.md\\'" 'utf-8)