feat(minion): add firefox sidebery customizations

I use sidebery on firefox, but sidebery is not best used without hiding
some existing firefox elements such as the original tab bar

Change-Id: I4b9af3df468e0bea92517d3bf7050c42535ad9fa
Reviewed-on: https://git.clicks.codes/c/Chimera/NixFiles/+/706
Reviewed-by: Skyler Grey <minion@clicks.codes>
Tested-by: Skyler Grey <minion@clicks.codes>
diff --git a/modules/home/users/minion/default.nix b/modules/home/users/minion/default.nix
index 677ed34..45f7530 100644
--- a/modules/home/users/minion/default.nix
+++ b/modules/home/users/minion/default.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ inputs, config, lib, pkgs, ... }:
 {
   options.chimera.minion.enable = lib.mkEnableOption "Enable Chimera options for minion";
 
@@ -102,6 +102,39 @@
         config.nur.repos.rycee.firefox-addons.refined-github
       ];
     };
+    programs.firefox.profiles.chimera.userChrome = ''
+      @import "${inputs.firefox-sidebery-gnome}/userChrome.css";
+
+      #TabsToolbar {
+        display: none;
+      }
+      #sidebar-header {
+        display: none;
+      }
+
+      /* Hide "Sign in to sync" */
+      #PanelUI-fxa-status {
+        display: none !important;
+      }
+      #appMenu-fxa-status2, #appMenu-fxa-separator {
+        display: none !important;
+      }
+    '';
+    programs.firefox.profiles.chimera.userContent = ''
+      @import "${inputs.firefox-sidebery-gnome}/userContent.css";
+
+      @-moz-document url("about:preferences") {
+        #category-sync { display:none!important; }
+        #category-more-from-mozilla { display:none!important; }
+      }
+    '';
+    programs.firefox.profiles.chimera.settings = {
+      "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
+      "svg.context-properties.content.enabled" = true;
+      "browser.uidensity" = 0;
+      "browser.theme.dark-private-windows" = false;
+      "widget.gtk.rounded-bottom-corners.enabled" = true;
+    };
 
     chimera.shell = {
       bash.enable = true;