Various changes

- `hs` host
  - cam subdomain behind reverse proxy
  - dynamic dns updater script
- `pc` host
  - ext4 instead of btrfs
  - ca-derivations experimental feature
- nix from unstable channel (2.8)
- cura from stable (unstable went broken)
- Emacs
  - company-nixos-options
  - helm-nixos-options
  - nix-modeline
  - disable format hook on save for nix mode
- nix from master (only in overlay, not used)
- bat (alias for cat)
- batman (alias for batman)
- disabled weird extra options for nix I couldn't even remember of
- Fira Code for sway/waybar
- New plain style for waybar

users/profiles/emacs/emacs.d/config/config-nix.el

@@ -1,7 +1,10 @@
 (use-package nix-mode
   :mode "\\.nix\\'"
-  :hook 
-  (before-save . lsp-format-buffer))
+  ;;:hook
+  ;;(before-save . lsp-format-buffer)
+  )
+
+
 (require 'sudo-utils)
 
 (defun nixos-rebuild-switch ()