Hi Guix, Till now I've used custom channel for package definition only. However, I want to add to the channel also the definition for the operating system. The problem is when I run =guix pull= the command fails. The reason is probaly due to the newly added configuration file which returns OS as a result. Without such a file the commands succeeds. Is there a way to tell Guix not to evaulate such a file? I looked into the Guix channel and the files are there with the extension tmpl. That however, didn't help. In the gnu/system.scm file there is at the end expression with note: "This is not super elegant but we can't pass SYSTEM and TARGET to 'operating-system-derivation' So is this the right direction to pursue and dig little bit deeper into the store-lift function?