Improved documentation for my config

system/README.org

@@ -0,0 +1,23 @@
+#+title: System-level Nix Modules
+#+author: Emmet
+
+** System-level Nix Modules
+Separate Nix files can be imported as modules using an import block:
+#+BEGIN_SRC nix
+imports = [ import1.nix
+            import2.nix
+            ...
+          ];
+#+END_SRC
+
+My system-level Nix modules are organized into this directory:
+- [[./hardware-configuration.nix][hardware-configuration]] - Default hardware config generated for my system
+- [[./style][style]] - Stylix setup (system-wide base16 theme generation) - Currently broken and needs fixing; last time I tried it doesn't work nicely with home-manager stylix at the same time
+
+** Variables imported from flake.nix
+Variables can be imported from [[../flake.nix][flake.nix]] by setting the =specialArgs= block inside the flake (see [[../flake.nix][my flake]] for more details).  This allows variables to merely be managed in one place ([[../flake.nix][flake.nix]]) rather than having to manage them in multiple locations.
+
+I currently import the following variables to the system config:
+- =myTheme= - base16 theme stored in ../themes to be used
+- =myBackgroundUrl= - Direct link to background wallpaper (used for login screen)
+- =myBackgroundSha256= - Checksum for background image used when downloading