chore(buildkite): switch to new CI system (#1220)

.buildkite/pipeline.yaml

@@ -1,34 +1,39 @@
 agents:
-  public: "true"
-  os: "linux"
+  queue: "nix-eval"
 
 steps:
+  - command: nix flake archive .#
+    label: ":nixos: Archive Nix flake inputs"
+    agents:
+      queue: "nix-build"
+
   - command: nix-buildkite
-    label: ":nixos: :buildkite: Build required CI jobs"
+    label: ":nixos: :buildkite:"
     plugins:
-      - hackworthltd/nix-buildkite#hackworthltd-v10:
+      - hackworthltd/nix#v1.0.0:
           file: ci.nix
-
-  - label: ":nixos: Archive Nix flake inputs"
-    command: nix flake archive .#
+          agent-tags: queue=nix-build
 
   - wait
 
   - label: ":nixos: :linux: Cache the Nix shell"
     command: |
       nix develop --print-build-logs --profile /tmp/primer --command echo "done"
+    agents:
+      queue: "nix-build"
 
   - label: ":nixos: :macos: Cache the Nix shell"
     command: |
       nix develop --print-build-logs --profile /tmp/primer --command echo "done"
     agents:
+      queue: "nix-build"
       os: "darwin"
 
   - label: ":nixos: :buildkite: :stopwatch: Run benchmarks"
     command: nix-buildkite
     agents:
-      public: "benchmarking"
+      queue: "nix-benchmark"
     plugins:
-      - hackworthltd/nix-buildkite#hackworthltd-v10:
+      - hackworthltd/nix#v1.0.0:
           file: ci-benchmarks.nix
-          agent-tags: "public=benchmarking"
+          agent-tags: queue=nix-benchmark

.buildkite/primer-wasm.yaml

@@ -1,5 +1,5 @@
 agents:
-  public: "true"
+  queue: "nix-build"
   os: "linux"
 
 steps:

.buildkite/public-cache-push.yaml

@@ -1,28 +1,23 @@
 agents:
-  public: "true"
+  queue: "cachix-push"
   os: "linux"
 
 env:
   CACHIX_CACHE_NAME: hackworthltd
-  CACHIX_CONFIG_PATH: /var/lib/cachix/hackworthltd/cachix.dhall
 
 steps:
   - label: ":nixos: Archive Nix flake inputs to public cache"
-    command: nix run github:hackworthltd/hacknix#cachix-archive-flake-inputs .# $CACHIX_CONFIG_PATH $CACHIX_CACHE_NAME
+    command: nix run github:hackworthltd/hacknix#cachix-archive-flake-inputs .# $CACHIX_CACHE_NAME
 
   - label: ":nixos: Push project to public cache"
-    command: nix run github:hackworthltd/hacknix#cachix-push-attr ciJobs $CACHIX_CONFIG_PATH $CACHIX_CACHE_NAME
-    # Limit to 1 such job at a time because this could be very
-    # bandwidth-intensive, and sustained.
-    concurrency: 1
-    concurrency_group: "primer-cachix-push"
+    command: nix run github:hackworthltd/hacknix#cachix-push-attr ciJobs $CACHIX_CACHE_NAME
 
   - wait
 
   - label: ":nixos: :linux: Cache Nix shell to public cache"
-    command: nix run github:hackworthltd/hacknix#cachix-push-flake-dev-shell primer-dev-shell $CACHIX_CONFIG_PATH $CACHIX_CACHE_NAME
+    command: nix run github:hackworthltd/hacknix#cachix-push-flake-dev-shell primer-dev-shell $CACHIX_CACHE_NAME
 
   - label: ":nixos: :macos: Cache Nix shell to public cache"
-    command: nix run github:hackworthltd/hacknix#cachix-push-flake-dev-shell primer-dev-shell $CACHIX_CONFIG_PATH $CACHIX_CACHE_NAME
+    command: nix run github:hackworthltd/hacknix#cachix-push-flake-dev-shell primer-dev-shell $CACHIX_CACHE_NAME
     agents:
       os: "darwin"