Using AWS is what causes it so using AWS can be what fixes it, too.

The old version of nixpkgs let us get away with setting neither isNormalUser
nor isSystemUser but setting all of the things a normal user would get
directly.  The new version of nixpkgs demands one of these flags be set.  So,
set it, and remove all of the redundant settings that it implies.

Continuous deployment for the grid systems

See merge request !115

I hope I'm almost done with this branch.

... This breaks the tie, thx to https://github.com/DBCDK/morph/issues/146

... that don't have it by default. (<5.6)

This was supposed to reduce evaluation-time memory enough to let low-memory
staging servers self-deploy.  But it didn't.

Grafana: No phoning home

See merge request !119

Seems this is opt-out:
https://github.com/NixOS/nixpkgs/blob/9d1350d9d56411b685ff3de5839ed6728b1bf808/nixos/modules/services/monitoring/grafana.nix#L576-L582

some words about key locations

See merge request !116

Add monitoring (scraping + dashboard) for PaymentServer

Closes privatestorageops#300

See merge request !117

Known issues:

  - Error rate tooltip computes over whole range (sum), should be per second or per minute or so
  - Duration buckets not great. Should also be per second probably.