SRE-984: Move Turborepo from generated package.json to Cargo workspaces

.changeset/config.json

@@ -13,7 +13,6 @@
   "ignore": [
     "@apps/*",
     "@local/*",
-    "@rust/*",
     "@tests/*",
     "@hashintel/block-design-system",
     "@hashintel/design-system",

.config/nextest.toml

@@ -3,6 +3,9 @@ fail-fast      = false
 failure-output = "final"
 status-level   = "skip"
 
+# The two tests live in `harpc-net`. A package matcher would name the crate, but nextest
+# rejects a matcher that names no package of the workspace, and a pruned workspace may not
+# contain the crate.
 [[profile.ci.overrides]]
-filter  = 'package(harpc-net) and (test(session::test::echo_tcp_concurrent) or test(session::test::echo_memory_concurrent))'
+filter  = 'test(session::test::echo_tcp_concurrent) or test(session::test::echo_memory_concurrent)'
 retries = 3

.github/CONTRIBUTING.md

@@ -46,7 +46,7 @@ New local packages should follow these rules:
 1. Anything which is imported or consumed by something else belongs in `libs/` and have a `package.json` `"name"`:
    - beginning with `@local/` for non-published JavaScript dependencies
    - identical to their `npm` name for published JavaScript dependencies
-   - begin with `@rust/` for Rust dependencies
+   - Rust crates carry no `package.json`; Turborepo knows them by their `Cargo.toml` `[package].name`
 2. Things which are executed belong in `apps/`, and are named `@apps/app-name
 3. Packages which aren't published to `npm` should have `"private": true` in their `package.json`
 4. All TypeScript packages should be `"type": "module"`

.github/actions/prune-repository/action.yml

@@ -12,16 +12,41 @@ runs:
       shell: bash
       env:
         SCOPE: ${{ inputs.scope }}
-      run: python3 ${{ github.action_path }}/prune.py "$SCOPE"
+      run: |
+        read -r -a scopes <<< "${SCOPE//$'\n'/ }"
+        turbo prune "${scopes[@]}"
+
+    # `turbo prune` copies the workspace directories and the root manifests; paths a package
+    # reads from outside any workspace are copied here.
+    - name: Copy paths outside the workspaces
+      shell: bash
+      env:
+        SCOPE: ${{ inputs.scope }}
+      run: |
+        copy() { mkdir -p "out/$(dirname "$1")" && cp -R "$1" "out/$1"; }
+        read -r -a scopes <<< "${SCOPE//$'\n'/ }"
+        for scope in "${scopes[@]}"; do
+          case "$scope" in
+            # The app's product tests execute evaluation runners and inspect committed evidence.
+            @apps/brunch-agent)
+              copy libs/@hashintel/brunch-agent/docs
+              copy libs/@hashintel/brunch-agent/evaluations
+              ;;
+          esac
+        done
 
     - name: Copy required files
       shell: bash
       run: |
-        cp -R Cargo.toml Cargo.lock rust-toolchain.toml oxfmt.config.ts infra/ out/
+        cp -R oxfmt.config.ts infra/ out/
 
-        # Globs are fun, especially in Bash. Covers all dot-files except `.`, `..`, and `.git`.
-        shopt -s extglob
-        cp -R .[!.!(.git)]* .git?* out/
+        # Every dot-file except `.git`, merged into what `turbo prune` already wrote there (the
+        # pruned `.cargo/config.toml`, the `.claude/hooks` workspace), which stays as it is.
+        shopt -s dotglob nullglob
+        for entry in .[!.]*; do
+          [ "$entry" = .git ] && continue
+          rsync --archive --ignore-existing "$entry" out/
+        done
 
     - name: Remove old repository files
       shell: bash