ru.nix

{ config, pkgs, lib, ... }:
{
  rune.project.name = "shopify-pay";
  rune.framework.rails.enable = true;

  aspect.packages.include = with pkgs; [
    geolite2 ngrok mysqlClient57 overmind watchman toxiproxy v8
  ];

  rune.project.repoName = "pay";
  aspect.developmentServer.hostname = "pay.myshopify.io";
  aspect.developmentServer.port = 40018;

  aspect.gitHooks.pre-commit = [ ./bin/git/pre-commit.sh ];

  aspect.customEnv = {
    KARAFKA_BOOT_FILE = "./shopify_pay_karafka/config/application.rb";
  };

  aspect.integrations = {
    shop-accounts = {};
    cardsink-copy = {};
    cardserver-copy = {};
    hosted-fields-copy = {};
  };

  aspect.commands = {
    server.default = {
      description = "Start overmind (rails server, karafka, sidekiq)";
      run = "overmind start -f Procfile.dev";
    };
    karafka.default = { run = "karafka"; };
    sidekiq.default = {
      run = "sidekiq -q payment_create -q payment_poll -q mailers -q default -q maintenance -q kafka";
    };
    ngrok.default = {
      description = "Starts the ngrok tunnel";
      run = "ngrok start -config config/ngrok.yml shopify-pay";
    };
    staging.default = {
      description = "Test your branch on staging";
      run = ''
        git push origin +@:staging --no-verify
        open ${config.aspect.shipit.stagingUrl}
      '';
    };
  };
}

Hi Burke!
I think I had the same idea with project.nix. It's in an experimental stage as of now with support for pre-commit-hooks.nix and IOHK's haskell.nix.
Is runix published somewhere?
Do you think we could standardize a core of certain module options so the community can contribute their own tooling and language integrations?