pathappend improvement

templates/path/pathappend.service.j2

@@ -5,7 +5,7 @@ Description=append home directory paths to PATH environment variable
 
 [Service]
 Type=oneshot
-ExecStart=fish -c "set -x PATH ~/bin ~/.local/bin $PATH; systemctl --user import-environment PATH"
+ExecStart=fish -c "for np in ~/.local/bin ~/bin; if not contains $np $PATH; set -x PATH $np $PATH; end; end; systemctl --user import-environment PATH"
 
 [Install]
 WantedBy=default.target