Write set-icon script

home.nix

@@ -4,6 +4,18 @@ let
   unstable = import nixpkgs-unstable {
     inherit system;
   };
+  setIcon = ''
+#!/usr/bin/env bash
+
+dbus-send \
+    --system \
+    --print-reply \
+    --type=method_call \
+    --dest="org.freedesktop.Accounts" \
+    /org/freedesktop/Accounts/User1000 \
+    org.freedesktop.Accounts.User.SetIconFile \
+    "string:$1"
+  '';
 in
 {
   imports = [ ./zsh.nix ./ssh.nix ];
@@ -41,6 +53,8 @@ in
     wireshark
 
     picocom
+
+    (writeShellScriptBin "set-icon" setIcon)
   ];
 
   home.stateVersion = "22.05";