Various

- firewall rule for VNC for `pc` host
- `go-translate` emacs package with custom bindings
- `magit-delta` to improve diffs readability with `magit` through
  `delta`
- `fira-code-mode` enabled only in `prog-mode`
- `mpv` is spawned by `qutebrowser` without waiting for video being
  loaded

hosts/pc/configuration.nix

@@ -51,6 +51,15 @@
     };
   };
 
+
+  networking.firewall = {
+    enable = true;
+    allowPing = true;
+    allowedTCPPorts = [
+      5900 # vnc
+    ];
+  };
+
   # TODO: disable, only for playing
   services.hydra = {
     enable = true;