There is nothing in this commit except for the changes made by
nix-shell -p nixfmt-rfc-style --run "nixfmt ."
If this has mucked up your open branches then sorry about that. You
can probably nixfmt them to match before merging
- a module to fetch them with http(s)
- a service using templating to consume them
- update an example to use it
needs service restarts
needs other services to use the template mechanism
needs tidying up
