{ config , pkgs , ... }: { programs.firefox = { enable = true; profiles = { icy = { isDefault = true; path = "34x366wc.default"; userChrome = '' #sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"] #sidebar-header { display: none; } #main-window[tabsintitlebar="true"]:not([extradragspace="true"]) #TabsToolbar > .toolbar-items { opacity: 0; pointer-events: none; } #main-window:not([tabsintitlebar="true"]) #TabsToolbar { visibility: collapse !important; } ''; }; }; }; }