refactor(ops): Split //ops/nixos into different locations r/2482

Splits //ops/nixos into:

* //ops/nixos.nix - utility functions for building systems
* //ops/machines - shared machine definitions (read by readTree)
* //ops/modules - shared NixOS modules (skipped by readTree)

This simplifies working with the configuration fixpoint in whitby, and
is overall a bit more in line with how NixOS systems in user folders
currently work.

Change-Id: I1322ec5cc76c0207c099c05d44828a3df0b3ffc1
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2931
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: glittershark <grfn@gws.fyi>

1 files changed, 0 insertions, 48 deletions

diff --git a/ops/nixos/tvl-buildkite.nix b/ops/nixos/tvl-buildkite.nix
deleted file mode 100644
index 2aa3b81811f4..000000000000
--- a/ops/nixos/tvl-buildkite.nix
+++ /dev/null
@@ -1,48 +0,0 @@
-# Configuration for the TVL buildkite agents.
-{ config, depot, pkgs, lib, ... }:
-
-let
-  cfg = config.services.depot.buildkite;
-  agents = lib.range 1 cfg.agentCount;
-  description = "Buildkite agents for TVL";
-
-  # All Buildkite hooks are actually besadii, but it's being invoked
-  # with different names.
-  buildkiteHooks = pkgs.runCommandNoCC "buildkite-hooks" {} ''
-    mkdir -p $out/bin
-    ln -s ${depot.ops.besadii}/bin/besadii $out/bin/post-command
-  '';
-in {
-  options.services.depot.buildkite = {
-    enable = lib.mkEnableOption description;
-    agentCount = lib.mkOption {
-      type = lib.types.int;
-      description = "Number of Buildkite agents to launch";
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
-    # Run the Buildkite agents using the default upstream module.
-    services.buildkite-agents = builtins.listToAttrs (map (n: rec {
-      name = "whitby-${toString n}";
-      value = {
-        inherit name;
-        enable = true;
-        tokenPath = "/etc/secrets/buildkite-agent-token";
-        hooks.post-command = "${buildkiteHooks}/bin/post-command";
-      };
-    }) agents);
-
-    # Set up a group for all Buildkite agent users
-    users = {
-      groups.buildkite-agents = {};
-      users = builtins.listToAttrs (map (n: rec {
-        name = "buildkite-agent-whitby-${toString n}";
-        value = {
-          group = lib.mkForce "buildkite-agents";
-          extraGroups = [ name ];
-        };
-      }) agents);
-    };
-  };
-}