[Init]

home/gui/firefox/default.nix

@@ -0,0 +1,23 @@
+{
+  config,
+  ...
+}: {
+  programs.firefox = {
+    enable = true;
+    profiles = {
+      main = {
+        id = 0;
+        settings = {
+          "browser.uidensity" = 1;
+          "privacy.trackingprotection.enabled" = true;
+          "privacy.trackingprotection.socialtracking.enabled" = true;
+          "privacy.trackingprotection.socialtracking.annotate.enabled" = true;
+          "services.sync.declinedEngines" = "passwords";
+          "services.sync.engine.passwords" = false;
+          "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
+        };
+        userChrome = builtins.readFile ./userChrome.css;
+      };
+    };
+  };
+ }

home/gui/firefox/userChrome.css

@@ -0,0 +1,14 @@
+#main-window[tabsintitlebar="true"]:not([extradragspace="true"]) #TabsToolbar > .toolbar-items {
+    opacity: 0;
+    pointer-events: none;
+}
+#main-window:not([tabsintitlebar="true"]) #TabsToolbar {
+    visibility: collapse !important;
+}
+#sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"] #sidebar-header {
+    display: none;
+}
+.tab {
+    margin-left: 1px;
+    margin-right: 1px;
+}