8ae2e281ff
Two flaws let a transient probe failure record an SSH URL for a spec that never asked for SSH: the visibility HEAD probe ran once with retries disabled and treated any failure as private, and the SSH ls-remote probe ran before the anonymous HTTPS one. On a machine with SSH keys, a throttled HEAD request resolved a public repo to git@host:..., breaking later installs on keyless CI runners with Permission denied (publickey). The resolver now retries transient HEAD failures, probes anonymous HTTPS git access before SSH for every representation except explicit SSH URLs, falls back to HTTPS when every probe fails, and records the host-archive tarball only for repos proven public - otherwise the resolution stays type: git so ambient credentials apply. TypeScript CLI only: pacquet resolves this bug class structurally via the v12 identity redesign (pnpm/pnpm#13684), which supersedes the Rust-side commits this PR previously carried. Closes pnpm/pnpm#13276. Co-authored-by: Zoltan Kochan <z@kochan.io> Co-authored-by: Claude Fable 5 <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.