These macros allow for nicer and more condensed loading of package, service, and system modules in the OS EDSL. For an example of this, please take a look of the sample-os-config.scm (above the commented-out line). I want to thank davexunit for his influence on this , this will be my first non-package recipe config. :^) As always, if you see something blatantly astray don't be shy to poke the ol' bootay. Thanks & Regards. - JGrant.