Declarative hydra, spec files, details should be added to the page.
Testing performance / jobset
This may be of interest to integrate in the article:
if you want to test hydra performance without fully configuring hydra, just try these 2 commandsnix-build '<nixpkgs>' -A hydra ./result/bin/hydra-eval-jobs -I ~/nixpkgs/ ~/nixpkgs/pkgs/top-level/release.nix
it will spit out a giant blob of json, chew up 4gig of ram, and write .drv files for every single package to the store