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## Summary - **New command `pnpm with <version|current> <args...>`** — runs pnpm at a specific version (or the currently active one) for a single invocation, bypassing the project's `packageManager` and `devEngines.packageManager` pins. Uses the same install mechanism as `pnpm self-update`, caching the downloaded pnpm in the global virtual store for reuse. - **New config setting `pmOnFail`** — overrides the `onFail` behavior of both `packageManager` and `devEngines.packageManager`. Accepted values: `download`, `error`, `warn`, `ignore`. Readable from CLI flag, env var, `pnpm-workspace.yaml`, or `.npmrc` — useful when version management is handled by an external tool (asdf, mise, Volta, etc.) and the project wants pnpm itself to skip the check. ``` pnpm with current install # one-shot, use running pnpm pnpm with 11.0.0-rc.1 install # one-shot, use specific version pnpm install --pm-on-fail=ignore # direct CLI flag pnpm install --config.pm-on-fail=ignore # equivalent via --config.* sugar pnpm_config_pm_on_fail=ignore pnpm install # env var # or in pnpm-workspace.yaml: pmOnFail: ignore ``` ## Implementation notes - Command handler lives in `@pnpm/engine.pm.commands` (next to `self-update` and `setup`). - `'with'` added to `SPECIALLY_ESCAPED_CMDS` in `cli/parse-cli-args` so args after `<spec>` pass through opaquely like `dlx`/`run`. - `pnpm with current <cmd> [args]` is rewritten in `pnpm/src/parseCliArgs.ts` to an in-process dispatch — argv is rebuilt in place so any global flags the user put before `with` (e.g. `--dir`, `--filter`) are preserved. `process.env.pnpm_config_pm_on_fail=ignore` is set so the override survives `parseCliArgsLib`'s `-v` / `--help` short-circuits (which discard other parsed options). - `main.ts` treats `skipPackageManagerCheck: true` as bypassing both the auto-download and the warn/error check (previously only the check). Also skips when `cmd='help'` and the help target is itself a skip-check command, so `pnpm with -h` works in pinned projects without downloading the pinned version first. - Errors reported to stderr for `with` (aligned with `dlx`/`create`/`sbom`). - `pmOnFail` wired in `config/reader/src/index.ts`: added to `types`, `Config`, and `pnpmConfigFileKeys`; applied as an override in the `onFail` resolution block. - The `with <version>` child process sets both `COREPACK_ROOT` (honored by every pnpm release via `isExecutedByCorepack()`) and `pnpm_config_pm_on_fail=ignore` (principled override on new releases that ship the setting). This gives graceful behavior when `pnpm with 9.3.0 install` spawns an older pnpm that predates the new setting. - Store controller lifecycle in the handler wrapped in `try/finally` to prevent leaks on install errors. Signal-induced child exits return a non-zero exit code so interrupted runs aren't masked as success.