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e1e29c1520
Adds a `--no-runtime` flag (config: `runtime: boolean`, default `true`) that suppresses install of runtime entries declared via `devEngines.runtime` (the `runtime:` protocol) **without modifying the lockfile**.
The lockfile keeps the runtime entry, so frozen-lockfile validation still passes; only the runtime fetch and `.bin` linking are skipped. Useful in CI matrices where the runtime is provisioned externally (e.g. via `pnpm runtime -g set node <version>`) before `pnpm install` runs.
The existing `--runtime-on-fail=ignore` is unsuitable for this case: it mutates the manifest and regenerates the lockfile to drop the runtime entry, which trips frozen-lockfile validation. The two flags are orthogonal and serve different purposes.
### Implementation
The hook lives in the lockfile filter stage:
- `lockfile/filtering/src/filterImporter.ts` — strips `runtime:` refs from the importer's deps maps when `skipRuntimes` is set.
- `lockfile/filtering/src/filterLockfileByImportersAndEngine.ts` — new `skipRuntimes?: boolean` option; runtime-protocol direct deps are dropped before they enter `pickedPackages`, so they never reach the dep graph or bin-linker. Applies to all runtimes (`node`, `deno`, `bun`) since they share the `runtime:` protocol prefix.
The option is plumbed through `installing/deps-restorer`, `installing/deps-installer`, and `installing/commands` to the user-facing `pnpm install --no-runtime` flag.
### Example
```json
// package.json
{
"devEngines": {
"runtime": {
"name": "node",
"version": "22.13.0",
"onFail": "download"
}
}
}
```
Local dev: `pnpm install` — installs node 22.13.0 as before.
CI matrix entry:
```yaml
- run: pn runtime -g set node ${{ matrix.node }}
- run: pn install --no-runtime
```
The lockfile is unchanged; the matrix's externally-provisioned node is used.