Coming soon:

• Explaining how self: super: { /* Code here */ } works
• Using super.callPackage
• Using a default.nix file as an overlay for a folder
• Probably worth mentioning the difference between super.callPackage blah {}; and import blah; and how callPackage works. (Probably including an example of import blah with pkgs; {blah1, blah2, blah3, blah...} and why super.callPackage blah {} is so much better).