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The Rust CLI and pnpr embed the versions their release builds report and verify (`PNPM_VERSION` in pnpm/crates/config/src/defaults.rs, the crate version in pnpr/crates/pnpr/Cargo.toml, and its Cargo.lock entry). These were mirrored from the npm wrappers by `syncRustVersions` in bump.ts — a step separate from the meta-updater, so running `pnpm version -r` without the full bump flow bumped the wrappers (pacquet 12.0.0-alpha.10, pnpr 0.1.0-alpha.2) while the Rust sources stayed at the previous versions. The release workflow's "Verify the committed version" step then failed, and nothing caught the drift before the tag. Move the sync into the meta-updater as a set of Rust-source file handlers, so it is written by `pnpm update-manifests` and, crucially, validated by `meta-updater --test` in pre-push and CI — a missed sync now fails locally instead of at release time. bump.ts drops the redundant `syncRustVersions` and runs `pnpm update-manifests` after `pnpm version -r`; the root `bump` script no longer needs its own trailing `update-manifests`. Regenerating brings the Rust sources up to the already-bumped wrapper versions (alpha.10 / alpha.2), unblocking the release. Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Fast, disk space efficient package manager:
- Fast. Up to 2x faster than the alternatives (see benchmark).
- Efficient. Files inside
node_modulesare linked from a single content-addressable storage. - Great for monorepos.
- Strict. A package can access only dependencies that are specified in its
package.json. - Deterministic. Has a lockfile called
pnpm-lock.yaml. - Works as a Node.js version manager. See pnpm runtime.
- Works everywhere. Supports Windows, Linux, and macOS.
- Battle-tested. Used in production by teams of all sizes since 2016.
- Experimental Rust port. Includes pacquet, an experimental port of the CLI written in Rust.
- See the full feature comparison with npm and Yarn.
To quote the Rush team:
Microsoft uses pnpm in Rush repos with hundreds of projects and hundreds of PRs per day, and we’ve found it to be very fast and reliable.
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Background
pnpm uses a content-addressable filesystem to store all files from all module directories on a disk. When using npm, if you have 100 projects using lodash, you will have 100 copies of lodash on disk. With pnpm, lodash will be stored in a content-addressable storage, so:
- If you depend on different versions of lodash, only the files that differ are added to the store.
If lodash has 100 files, and a new version has a change only in one of those files,
pnpm updatewill only add 1 new file to the storage. - All the files are saved in a single place on the disk. When packages are installed, their files are linked from that single place consuming no additional disk space. Linking is performed using either hard-links or reflinks (copy-on-write).
As a result, you save gigabytes of space on your disk and you have a lot faster installations!
If you'd like more details about the unique node_modules structure that pnpm creates and
why it works fine with the Node.js ecosystem, read this small article: Flat node_modules is not the only way.
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Getting Started
Benchmark
pnpm is up to 2x faster than npm and Yarn classic. See all benchmarks here.
Benchmarks on an app with lots of dependencies:
License
MIT, except the pnpr/ directory, which is source-available under the PolyForm Shield License 1.0.0.