feat: several updates

hosts/work/configuration.nix

@@ -41,12 +41,12 @@
     initrd.kernelModules = [ "amdgpu" ];
     plymouth.enable = true;
   };
-  programs.obs-studio = {
-    enable = true;
-    plugins = [ pkgs.obs-studio-plugins.wlrobs ];
-  };
   programs = {
     niri.enable = true; # test...
+    obs-studio = {
+      enable = true;
+      plugins = [ pkgs.obs-studio-plugins.wlrobs ];
+    };
     # xwayland.enable = true;
   };
   hardware = {
@@ -72,6 +72,7 @@
     tailscale.useRoutingFeatures = "client";
   };
   environment.systemPackages = [
+    pkgs.cachix
     pkgs.pavucontrol
     pkgs.swaylock
     pkgs.xwayland-satellite