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WalkthroughGit dependencies with ChangesGit dependency preparation
Suggested reviewers: Merge Risk: 🔵 Low · up to Git dependencies will now install their development tools before prepare scripts, but packages using scoped registries may still fail to prepare unless registry settings are forwarded, and a small lint cleanup is needed. The PR is mergeable with explicit owner awareness and follow-up. 🚥 Pre-merge checks | ✅ 4✅ Passed checks (4 passed)
Full details: Linked Issues checkExplanation The implementation directly addresses issue Full details: Description checkExplanation The description is comprehensive. It explains the problem, implementation, scope, verification, tests, documentation, and known limits. It does not use the exact template headings, but it provides the required information in equivalent sections. Comment |
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Reproduced on the released bun (1.3.14 and current canary) with a local repository whose Same thing with |
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Updated 10:10 PM PT - Aug 27th, 2026
❌ @robobun, your commit 2736cba has 3 failures in
🧪 To try this PR locally: bunx bun-pr 38810That installs a local version of the PR into your bun-38810 --bun |
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Actionable comments posted: 5
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Inline comments:
In `@docs/pm/lifecycle.mdx`:
- Around line 78-80: Update the lifecycle steps to document the nested command
as “bun install --ignore-scripts --no-save”, including that package.json and any
committed lockfile remain unchanged. Revise step 3 to state that the
installation cleanup restores a pre-existing node_modules folder when one was
present, rather than always removing it.
In `@src/install/lifecycle_script_runner.rs`:
- Around line 382-394: Update the non-ENOENT error arm in restore_node_modules’s
renameat handling to emit a warning before returning false; include the affected
directory, the failed rename operation, and that the nested install may write
into the real node_modules and leave changes behind, matching the warning style
used by finish.
- Around line 363-368: Update path_in_package to use AutoAbsPathChecked and
propagate MaxPathExceeded instead of discarding append failures. Adjust
lifecycle cleanup callers to handle construction errors and skip each filesystem
operation when a target path cannot be built.
In `@src/install/lockfile/Package/Scripts.rs`:
- Around line 436-439: In the List implementation near FIRST_PREPARE_INDEX, add
a compile-time assertion that the constant matches the index of preprepare
defined by LockfileScripts::NAMES and Scripts::hooks(). Ensure the assertion
fails if either hook-ordering table is reordered, while preserving the existing
constant and runtime behavior.
In `@src/install/PackageManager/PackageManagerLifecycle.rs`:
- Around line 465-469: Update the cache-directory setup around
get_cache_directory to propagate its error instead of discarding it, and only
add BUN_INSTALL_CACHE_DIR to script_env when cache_directory_path is non-empty;
leave the variable unset for an empty path so nested installs use their default.
🪄 Autofix
Fix all unresolved CodeRabbit comments on this PR:
- Push a commit to this branch (recommended)
- Create a new PR with the fixes
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docs/pm/cli/add.mdxdocs/pm/lifecycle.mdxsrc/install/PackageManager/PackageManagerLifecycle.rssrc/install/lifecycle_script_runner.rssrc/install/lockfile/Package/Scripts.rstest/cli/install/bun-install-lifecycle-scripts.test.ts
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On the comment-length lint threads: the comments it flagged in the first revision were cut down or removed in 8b6eee3 and edfb67b. The ones still flagged are two or three lines each and state something the code cannot say by itself (what |
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I reviewed this PR and the automated bug hunt found no issues. Because it's a substantial feature addition to the package manager — spawning a nested bun install, forwarding registry credentials via env vars, and managing node_modules set-aside/restore across interrupted runs — a human look would still be worthwhile.
What was reviewed:
PrepareDependenciesstate machine —remove_prepare_dependenciesruns on every terminal path (non-zero exit, signal,Status::Err, spawn failure, success); the optional-dependency failure path skips it butdeinit_and_delete_packageremoves the whole package dir, which contains the set-aside directory.set_aside_node_modules/finish: placeholdermkdir/rmdirpair up, a pre-existing.bun-prepare-node_modulesis treated as the original from an interrupted run, andAutoAbsPathCheckedbounds every path.install_dependencies_for_prepareis set only for Git/Github resolutions with a prepare-family script;FIRST_PREPARE_INDEXis tied toLockfileScripts::NAMESby a compile-time assert.- The earlier stdout-drain nit is addressed (both affected test spawns now use
stdout: "ignore").
Extended reasoning...
Overview
This PR makes bun install run a nested bun install --ignore-scripts --no-save inside a git/github dependency's directory before its preprepare/prepare/postprepare scripts, so build tools from the package's devDependencies are available (matching npm/pnpm). It touches lifecycle_script_runner.rs (~250 lines added: a PrepareDependencies state enum, NestedInstallCleanup with begin/finish, an alternate argv/envp for the nested spawn, and cleanup calls threaded through every exit path of handle_exit), PackageManagerLifecycle.rs (builds a second env map forwarding BUN_CONFIG_REGISTRY/BUN_CONFIG_TOKEN/BUN_INSTALL_CACHE_DIR), Scripts.rs (a new install_dependencies_for_prepare flag on List with a compile-time assert on FIRST_PREPARE_INDEX), two docs pages, and ~310 lines of new tests plus a createGitDependency helper.
Security risks
The nested install receives the project's default-registry token via BUN_CONFIG_TOKEN in its environment. That's the same bun binary in a subdirectory of node_modules, and the token only travels alongside its own registry URL, so this is scoped — but it is a new place a credential flows and the PR explicitly notes scoped registries / _auth are not forwarded. delete_tree calls target paths built from the package's own cwd (already the lifecycle-script cwd) with fixed suffixes via length-checked AutoAbsPathChecked, so there is no user-controlled path segment.
Level of scrutiny
High. This is a user-visible behavior change to bun install in a subsystem where a wrong delete_tree or a mishandled interrupted run corrupts a project's node_modules. The set-aside/restore protocol (.bun-prepare-node_modules as sentinel/placeholder), the decision to leave installed deps in place when the rename fails (with a warning), and the credential-forwarding scope are all design calls a maintainer should confirm.
Other factors
Test coverage is thorough (hoisted + isolated linkers, bun pm trust, failing nested install, interrupted-run recovery, committed bun.lock preservation, migrated-lockfile cleanup) and hermetic (local git repo + verdaccio). All prior review threads (CodeRabbit, comment-cop, my stdout-drain nit) are resolved in the current diff. The isolated-linker case is skipped on Windows for a documented pre-existing bug. One candidate issue about a leftover migrated bun.lock after an interrupted run was examined and ruled out this run.
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The Windows failure of the isolated-linker case here (the git dependency's store entry embeds the repository URL and the package directory passes |
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CI status for edfb67b (build 97171): every lane that ran is green; the only failures are six tests tagged flaky that passed on retry, none of them related to this change. The two |
…ile: tarballs relative to their folder package (#38867) This PR bundles three independent install fixes (each was reviewed on its own PR; folded here so they land together): 1. bound the resolution part of isolated store entry names (this PR's original change) 2. send credentials embedded in a tarball URL as Basic authorization (from #39025) 3. read `file:` tarballs relative to the `file:` folder package that declares them (from #39017) Rebased on main after #39014: the isolated-store test file now computes expected git entry names through the same resolution cut (`storeEntryName`), since a `git+http+++host+port+repo.git+<url hash>+<sha>` resolution passes 80 bytes. --- ## 1. install: bound the resolution part of isolated store entry names #### Problem - With `linker = "isolated"`, a trusted git dependency with any lifecycle script makes `bun install` fail on Windows with `error: Failed to run script prepare due to error ENOENT` (exit 1). The same project installs fine with the hoisted linker. This is the Windows failure of the isolated case in #38810's test, which that PR currently skips on Windows. - A store entry is named `<name>@<resolution>` (`StoreKeyFormatter`, `src/install/isolated_install/Store.rs`). For git, github, tarball and folder dependencies the resolution is the whole URL or path with separators turned into `+` (`src/install/repository.rs` `StorePathFormatter`, `src/install/resolution.rs` `StorePathFormatter`), plus the commit for git: a git dependency checked out from a temp directory gets an entry like `dep@git+file++++C++Users+AZUREU~1+AppData+Local+Temp+lc-repro+dep-repo+3c6955c70dbe1ff186a126c93c5e77c3ae7bd6b4` (111 bytes here, 170+ in #38810's test), and the name grows with the repository path. - The package directory, `<project>\node_modules\.bun\<entry>\node_modules\<name>`, is the cwd of the package's lifecycle scripts (`Scripts::get_list` -> `lifecycle_script_runner.rs` `SpawnOptions.cwd`). bun's own file operations use long-path-capable NT paths, so the entry is created and linked, but `CreateProcessW` does not accept a current directory longer than `MAX_PATH`, and the spawn (libuv's `uv_spawn` on Windows) reports that as ENOENT. Measured on Windows x64 with the released `1.4.0-canary.1`: a package directory of 238 characters runs the script, one of 268 characters fails as above. - The same unbounded name also fails on every platform once it passes `NAME_MAX`: a tarball URL or folder path of 250+ bytes makes the install fail with `ENAMETOOLONG: File name too long: failed to link package` (the case of #37470). #### Fix - `StoreKeyFormatter` now writes the resolution through `write_resolution`: a resolution of at most 80 bytes (`MAX_RESOLUTION_LEN`) is written unchanged; a longer one is written as its first 63 bytes (backed up to a UTF-8 character boundary) followed by `+` and the 16 hex digit wyhash of the full text (seed 0, so `Bun.hash(text)` reproduces it), which is 80 bytes again. The `name@` prefix and the `+<peer hash>` suffix are unchanged. A cut git entry looks like `dep@git+file++++C++Users+AZUREU~1+AppData+Local+Temp+lc-repro-aaaaa+ef7ad81a431ad661` (the 268 character case from the measurement above; its package directory is now 206 characters). - Why this is correct: - Every path that contains an entry name is formatted through this one `Display` impl: the project store directory and the dependency symlinks into it (`Installer.rs` `append_store_path` / `append_store_node_modules_path` / `link_to_hidden_node_modules`), the lifecycle script cwd (same `append_store_path`), the global store directory name and the entry hash seeded from the name (`Installer.rs` `append_global_store_entry_path`, `isolated_install.rs` entry hash), `bun pm prune`'s set of expected directories (`prune.rs` `push_store_entry_names`) and `bun pm licenses`'s lookup (`pm_licenses_command.rs` `BunStore::lookup`, via `fmt_store_key`). They all see the same cut name; nothing persists or parses the old one (the lockfile stores resolutions, and an existing entry is detected by re-deriving its name). - The cut name stays a function of the resolution alone, so repeated installs find the same entry, and two resolutions that agree on the first 63 bytes still get distinct entries through the hash. The sink hashes the text in whatever chunks the formatters write it in (the path formatters write one character at a time); `Wyhash`'s streaming form is chunk-invariant (`test_iterative_chunked_matches_oneshot` in `src/wyhash/lib.rs`), which is what lets the tests compute the expected names with `Bun.hash`. - The cut happens inside the resolution only, so `prune.rs` (`split_store_key`, `store_has_entries`, `store_link_target`, which split the name at `@`) and `pm licenses` (which matches `<key>` or `<key>+<peer hash>`) keep working without changes. - Resolutions of 80 bytes or less are byte for byte what they were, so versions and `github:` shorthands (`github+owner+repo+<sha>` is about 60 to 75 bytes) are unaffected on upgrade. Most full git URLs are over 80 bytes (`git+https+++github.com+` is 23 bytes and the commit adds 41), so those entries are re-created once under the cut name on the first install after upgrading, and the old directories stay until `bun pm prune`, as for any re-resolved entry. The cut keeps the URL itself readable: `git-pkg@git+file++++tmp+licenses-git-repo_eXITMt+491eb29762d8d19b570b43+f87e35b31f207dd4`. - 80 is the tunable here. The package directory is `<project> + 34 + 2 * <name> + <resolution>` (+17 with peers) characters, so with 80 it fits `MAX_PATH` whenever `<project> + 2 * <name>` is at most 145 (128 with peers); #38810's case (61 character temp dir, 25 character name) ends up at about 225 instead of about 290. It also makes the entry directory name fit `NAME_MAX` together with every suffix the installers append (`+<peer hash>`, `-<entry hash>`, `.tmp-<hex>`) for names up to 119 bytes, and with the peer suffix alone for names up to 157 bytes. For comparison, pnpm's `virtual-store-dir-max-length` defaults to 120 bytes for the whole directory name; 80 bytes of resolution plus a typical name lands in the same range. - #37470 (the same mechanism with a 200 byte limit on the whole `name@resolution`, for the `NAME_MAX` case only) is closed in favor of this PR: that limit does not help the `MAX_PATH` case (the failing names above are 130 to 180 bytes), and a cut through `name@` would no longer work with `bun pm prune` / `pm licenses` (see the `prune.rs` bullet above). Its repro installs with this branch and its deep-directory case is carried over below. What it covered and this PR does not is the name part: a name over 119 bytes (157 in the project store) can still produce an entry over `NAME_MAX` once its resolution is cut; if that should be covered too, it would be the same sink applied to the name separately, keeping the `@`. #36973 (documenting the layout) would need a sentence about this rule; this PR adds a short one to `docs/pm/isolated-installs.mdx`. #38810's Windows skip of its isolated case can be removed once both land. #39014 changes the same text (it removes URL credentials, and the hash is of the text as formatted), so landing it in the same release as this avoids renaming those entries twice. - Verification, `long store entry names` in `test/cli/install/isolated-install.test.ts`: - a folder resolution of exactly 80 bytes is kept verbatim and one of 81 bytes is cut to the name computed with `Bun.hash`; two resolutions of one package that only differ after the cut point get separate entries that each resolve to their own package; a second install finds the same entries - a cut entry with a resolved peer gets `+<peer hash>` appended after the cut name and links the peer - a folder name made of 2 byte characters, positioned so that byte 63 falls inside a character, is cut at byte 62 and still installs (without the character boundary loop this case panics with `a formatting trait implementation returned an error`; the test only asserts the shape because the spelling of non-ASCII bytes in these names is #32304's subject) - (carried over from #37470) a local tarball and a folder three 85 byte directories deep, whose unbounded entry names would be 277 bytes, install; the top-level symlinks and the `.bun/node_modules` fallback link point at the cut names, and a second install finds the same entries - a tarball URL of about 290 bytes installs with `install.globalStore` enabled: the local entry has the cut name, links to `links/<cut name>-<entry hash>`, and the package imports at runtime - the reported case: a trusted `git+file://` dependency whose repository directory name alone is 60 characters runs its postinstall script with the isolated linker; the entry has the cut name - Without the `Store.rs` change the first three tests and the git one fail on the entry name (on Windows the git one fails with `error: Failed to run script postinstall due to error ENOENT`, the reported message) and the deep-directory and tarball ones exit 1 with `ENAMETOOLONG`; all of them pass with `bun bd test` on Linux (the five original ones also on a local Windows x64 build; the deep-directory one on the Windows lanes in CI). #37470's repro from its description (`./x/../` x130 tarball spec) installs with this branch with an 84 byte entry. - Also run with the fix: the rest of `isolated-install.test.ts`, `bun-pm-licenses.test.ts` (its `git dependency is listed (isolated)` case now goes through a cut name on every platform, since the repo lives in a temp dir), `bun-prune.test.ts`, `public-hoist-pattern.test.ts`, `isolated-relink.test.ts`, `bun-install-native-binlink.test.ts`, `config-version.test.ts`, and the PowerShell reproduction from the report on Windows x64 (package directory of 268 characters before, 206 after, script runs). #### Background - Isolated linker: instead of hoisting, every package is materialized once under `node_modules/.bun/<entry>/node_modules/<name>` and everything else symlinks to it. `<entry>` is `<name>@<resolution>`, plus `+<16 hex>` when the package was installed for a specific set of peer dependencies. With `install.globalStore`, `node_modules/.bun/<entry>` is itself a symlink to `<cache>/links/<entry>-<16 hex entry hash>`. - Resolution: the lockfile's description of where a package came from. It is the version for registry packages and the spec itself (folder path, tarball URL, git URL plus commit) for everything else, which is why only those entries get long. - `MAX_PATH`: Windows' 260 character limit for paths passed to Win32 APIs. Applications can opt out of it for file operations (bun does, by using `\\?\` / NT paths), but the current directory handed to `CreateProcess` is still limited to it, and libuv maps the resulting Win32 error to ENOENT. - `NAME_MAX`: the 255 byte limit on one path component on Linux and macOS (255 UTF-16 units on NTFS); exceeding it fails with `ENAMETOOLONG` regardless of how long the whole path is. <details> <summary>Windows measurement with the released build (1.4.0-canary.1)</summary> Git repo and project created under `%TEMP%` with `linker = "isolated"`, `trustedDependencies: ["dep"]` and `"prepare": "echo prepared > prepared.txt"`; the temp directory name was lengthened to move the package directory across the limit. ``` store entry: dep@git+file++++C++Users+AZUREU~1+AppData+Local+Temp+lc-repro-aaaaaaaaaaaaaaaaaaa+dep-repo+d1a8f7c4111533cb16b52a9edcb086329e6472b5 pkg dir len: 238 prepared.txt exists: True exit: 0 store entry: dep@git+file++++C++Users+AZUREU~1+AppData+Local+Temp+lc-repro-aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa+dep-repo+30b6ecc8d4d0e4fb2f3df2402556222bf6a5b7dc pkg dir len: 268 pkg dir exists: True prepared.txt exists: False error: Failed to run script prepare due to error ENOENT exit: 1 ``` Same second layout with this PR's build: ``` store entry: dep@git+file++++C++Users+AZUREU~1+AppData+Local+Temp+lc-repro-aaaaa+ef7ad81a431ad661 pkg dir len: 206 prepared.txt exists: True exit: 0 ``` </details> <!-- robobun:evidence:begin --> --- **no test proof** · iteration 1 · Platform-specific test(s) that do not run on this machine. Deferring to CI, which covers all platforms: test/cli/install/bun-install.test.ts test/cli/install/isolated-install.test.ts <!-- robobun:evidence:end --> --- ## 2. install: send credentials embedded in a tarball URL as Basic authorization (from #39025) #### Problem - A dependency declared as a tarball URL with credentials, `"no-deps": "http://carol:s3cret@127.0.0.1:PORT/cdn/no-deps-1.0.0.tgz"`, is downloaded without an `Authorization` header. A server that needs the credentials answers 401 and the install fails with `error: GET http://carol:s3cret@127.0.0.1:PORT/cdn/no-deps-1.0.0.tgz - 401` (bun 1.4.0 and `main`, hoisted and isolated linker). npm 11 installs the same package.json and sends `Authorization: Basic Y2Fyb2w6czNjcmV0` (`base64("carol:s3cret")`). - The username-only form (`http://token@127.0.0.1:PORT/x.tgz`) does not reach the server at all: the request goes to the hostname `token@127.0.0.1`. - Cause: `NetworkTask::for_tarball` (`src/install/NetworkTask.rs`) only ever attaches the registry scope's configured token or `_auth`, and only for npm packages whose tarball is on the registry's origin. Nothing reads the URL's userinfo, and the HTTP client does not either (it only turns the userinfo of a proxy URL into `Proxy-Authorization`). The misrouted username-only form comes from `bun_url::URL::parse`, which takes `token@127.0.0.1` for the hostname when the userinfo has no `:` and a port follows (tracked separately; this change no longer depends on how that parser splits the authority). - Found while fixing the isolated store names of these URLs (#39014), not from a user report. #### Fix - `for_tarball` splits the userinfo off the request URL before anything else looks at it (`split_url_userinfo`: the authority runs from `://` to the first `/`, `?` or `#`, the userinfo is everything in it up to the last `@`, so the `@` of `/@scope/pkg/-/pkg.tgz` is not one) and sends it as `Authorization: Basic base64(userinfo)` (`basic_authorization_from_userinfo`, which appends `:` when the userinfo has no password). The request URL is the URL without the userinfo. - Precedence: when the registry scope's credentials apply to the tarball (npm package, tarball on the registry origin, scope has a token or `_auth`), they are still sent and the URL's are not. This is npm's order as well: npm-registry-fetch sets the header from the config, and node only derives `Authorization` from the URL's `auth` when the request has no such header. - Why Basic of the userinfo as written: it is what npm sends, checked against npm 11.16 for `user:pass`, `user` (sent as `user:`), `:pass` and a percent-encoded password (sent undecoded); transcript below. It is also how bun already treats credentials written into a registry URL (#38796 stores the username and password bytes as given). pnpm was not available offline. Two spellings are deliberately not npm's: a second `:` inside the password is sent as written where npm percent-encodes it, and `:token@` in a tarball URL is Basic like npm rather than the Bearer that bun's registry URLs make of it; both are called out in the test table and in the code comment. - Why the URL is requested without the userinfo: `bun_url::URL::origin` includes the userinfo and the HTTP client compares origins to decide whether `Authorization` follows a redirect, so with the userinfo left in, a redirect to the same host would drop the header (verified: with only the header added, the redirect test below fails with `authorization: null` on the second hop). It also fixes the username-only form without touching `bun_url`, and the `GET <url> - 401` line now prints the URL without the credentials. The cross-host rule is unchanged: the HTTP client strips the header on a redirect to another origin, same as for the registry token (test included). - Behavior outside the request is unchanged: `package.json`, the lockfile, the task id and the cache key still use the URL as written. Documented in `docs/pm/cli/add.mdx`. - Verified with `test/cli/install/bun-install.test.ts`, `describe("credentials embedded in a tarball URL")`: 12 tests, 10 of which fail on the unfixed build (the two guards, scoped path and registry credentials taking precedence, pass on both). The rest of the file is unchanged: the remaining failures locally are the tests that need the public internet, identical with the unmodified binary. - `cargo check -p bun_install`, `cargo clippy -p bun_install`, rustfmt and prettier are clean. #### Background - Tarball dependency: a `package.json` entry whose version is an `http(s)://` URL ending in `.tgz`/`.tar.gz`/`.tar`. Bun downloads it directly; no registry manifest is involved, so the registry's configured credentials never applied to it (`Authorization::NoAuthorization` at the call sites in `PackageManagerEnqueue.rs`). Registry packages reach the same `for_tarball` through their manifest's `dist.tarball` URL with `AllowAuthorization`, which is the case where the registry scope's credentials can apply. - Userinfo: the `user:password@` part of a URL's authority (RFC 3986 section 3.2.1). HTTP never puts it on the wire; clients that honor it (npm through minipass-fetch, curl, browsers) convert it into `Authorization: Basic base64(user:password)`. - `NetworkTask::for_tarball` builds one HTTP request per tarball download: `url_buf` (the request URL) and `header_buf` (the headers, built with `HeaderBuilder` in two passes, `count` then `append`, because the buffer is allocated exactly once in between). Retries reuse the same request, so the header is sent on every attempt. - `bun_url::URL::parse` is the allocation-free splitter the HTTP client and `for_tarball` use; it is not a WHATWG parser. Its `origin` is a prefix of the input string, which is why it still contains the userinfo. <details> <summary>npm 11.16 against a local server logging the Authorization header (same tarball, same package.json shape)</summary> ``` userinfo in the dependency URL header npm sent carol:s3cret@ Basic Y2Fyb2w6czNjcmV0 = base64("carol:s3cret") carol@ Basic Y2Fyb2w6 = base64("carol:") :s3cret@ Basic OnMzY3JldA== = base64(":s3cret") carol:s3%40cret@ Basic Y2Fyb2w6czMlNDBjcmV0 = base64("carol:s3%40cret"), not decoded carol:s3:cret@ Basic Y2Fyb2w6czMlM0FjcmV0 = base64("carol:s3%3Acret"), bun sends base64("carol:s3:cret") carol:s3cret@ + 302 to same host Basic ... on both hops ``` bun 1.4.0-canary.1 (eabb96d) for the first row: the server logs `auth=null` and bun prints `error: GET http://carol:s3cret@127.0.0.1:PORT/cdn/no-deps-1.0.0.tgz - 401`. </details> --- ## 3. install: read `file:` tarballs relative to the `file:` folder package that declares them (from #39017) #### Problem - A `file:` folder dependency whose own package.json declares a local tarball fails to install (released 1.4.0 canary and main, both linkers): project package.json `{"dependencies":{"lib":"file:./vendor/lib"}}`, `vendor/lib/package.json` declaring `"tool": "file:./tool.tgz"`, `vendor/lib/tool.tgz` present: ``` error: ENOENT extracting tarball from tool error: tool@file:./tool.tgz failed to resolve ``` - The path is read as `<project>/tool.tgz`. If that file happens to exist it is installed as `tool` instead of the folder's copy, with no error. The directory form of the same declaration (`"tool": "file:./tool"`) is already resolved relative to `vendor/lib`. - Cause: `enqueue_local_tarball` (`src/install/PackageManager/PackageManagerEnqueue.rs`) picks the directory a local tarball path is relative to, and the only declarer it looked at was a workspace (`get_workspace_pkg_if_workspace_dep`). Every other declarer, including a `file:` folder package, fell through to the top-level dir. - The same choice was also wrong in the other direction: a root `overrides` / `resolutions` entry or catalog entry pointing a dependency at `file:./x.tgz` was read relative to the workspace when the dependency it applied to was declared by a workspace member, so `overrides: { bar: "file:./bar.tgz" }` with `bar.tgz` in the project root failed with the same ENOENT as soon as a workspace depended on `bar`. This is #25835 (`overrides`) and #25752 (`catalogs`); both reproduce as reported on the released build and install with this change. The directory form of an override is already resolved relative to the project (`Folder` arm of `get_or_put_resolved_package`). Fixes #25835 Fixes #25752 #### Fix - `enqueue_local_tarball` now takes the base directory from `local_tarball_base_dir`: the directory of the declaring package when it is a workspace or a `file:` folder package and that package's own specifier is the tarball path being read; the top-level dir in every other case. - Why the declaring package: a path in a package.json means a file next to that package.json, which is what npm does for `file:` and what bun already does for workspace declarers and for the directory form. A `file:` folder package is read from the project like a workspace is, and its `Resolution::Folder` payload is its directory relative to the top-level dir (`folder_resolver.rs`, `NewResolver { folder_path: rel }`), the same shape as a workspace's `Resolution::Workspace` payload, so both are joined the same way. The only other `Resolution::Folder` packages are the stubs created for `file:` directories declared by something other than the root or a workspace (`Folder` arm of `get_or_put_resolved_package`); those carry no dependency list, so they are never the declarer of an edge. - Why the "own specifier" condition: `overrides`, `resolutions` and catalogs are only parsed from the root package.json (`Package.rs`, `FEATURES.is_main`), and applying one leaves the declaring package's stored edge untouched (the replacement is local to `enqueue_dependency_with_main_and_success_fn`). So when the stored edge's specifier is not the path being read, the root wrote the path and the top-level dir is the only directory it can mean. Without this condition, root overrides applied to a folder-declared dependency, which work today only because of the bug, would start being read from the folder. - Why it is decided from the edge and not from the resolve pass's `version_was_replaced`: `enqueue_local_tarball` is also reached from `enqueue_tarball_for_reading` when a project with a `bun.lock` is installed into an empty cache. The lockfile row keeps the path as declared (`"tool": ["bar@./tool.tgz", ...]` under `"lib": [..., { "dependencies": { "tool": "file:./tool.tgz" } }]`), and the edge's declarer and specifier are available there too, so both passes compute the same directory. Lockfile format is unchanged and existing lockfiles keep working; the path in the row is joined onto a different directory only for declarers that previously failed or installed the wrong file. - Declarers extracted from the cache (registry, git, tarball packages) still fall through to the top-level dir, as before; #38986 is changing what happens to those separately. `Lockfile::get_parent_pkg_of_dependency` is the same helper that PR adds. - Left as is: the lockfile identity of a local tarball is still the path as written (`bar@./tool.tgz`), so two project packages declaring the same relative path to two different files still share one row and one read, the limitation workspaces already have. A package.json inside a folder dependency that worked around this bug by writing a project-relative path (`file:./vendor/lib/tool.tgz`) will now need the path relative to itself, which is what npm requires for it as well. - Verified with `test/cli/install/bun-install.test.ts`, `describe("file: tarball declared by a file: folder dependency")`: the folder's tarball is installed with the hoisted and with the isolated linker, and a root override supplying the path is read from the project. Each test plants a different tarball at the other candidate path and runs a fresh install followed by `--frozen-lockfile` into an emptied cache, so both the resolve pass and the install from `bun.lock` have to read the right file. `test/cli/install/bun-workspaces.test.ts`, `relative tarballs > from a root override / catalog entry applied to a workspace dependency`, covers #25835 and #25752 the same way. The four folder/workspace tests install the wrong tarball without the `src/` change (checked against a debug build of main and against the released build); the override-on-folder test passes before and after and pins that case. - Also run with this change: `bun-workspaces.test.ts` (74 pass), `overrides.test.ts` + `nested-overrides.test.ts` (151 pass), `bun-lock.test.ts` (40 pass), `bun-install.test.ts -t "tarball|tgz|file:|folder|override|resolutions"` (51 pass; `should treat non-GitHub http(s) URLs as tarballs` fails identically on the released build, it needs network), `isolated-install.test.ts`, `bun-add.test.ts` and `bun-install-registry.test.ts` filtered to tarball/file tests (all pass). `cargo clippy -p bun_install` is clean. #### Background - A `file:` dependency on a directory is a `Tag::Folder` dependency; one on a `.tgz` is a `Tag::Tarball` dependency with a local URI. The latter resolves to `Resolution::LocalTarball(<path as written>)`; the path string is both the task id for reading it and the package's identity in `bun.lock`. - bun reads the package.json of the root, of workspace members and of `file:` folder dependencies from disk (`Package::parse`), and stores for each of the latter two a `Resolution::Workspace` / `Resolution::Folder` whose payload is the package directory relative to the top-level dir. Packages from the registry, git or a tarball get their dependency lists from the manifest or the extracted archive instead and have no directory in the project while they resolve. - Dependency edges live in one flat buffer and every package owns a contiguous slice of it, which is how the package that declared an edge is found. The edge stores the specifier as declared; overrides, resolutions and catalogs replace it only for the duration of resolving that edge. - `enqueue_local_tarball` is called from two places: the `Tarball` arm of the resolve pass (no lockfile row yet, the tarball is read to learn the package's name and dependencies) and `enqueue_tarball_for_reading` during install (a row exists in `bun.lock`, but the extracted package is missing from the cache). It computes the on-disk path on the main thread and hands it to a thread pool task, which only reads the file. Closes #39025 Closes #39017 --------- Co-authored-by: Jarred Sumner <jarred@jarredsumner.com>
…s prepare scripts A git or github dependency is installed straight from its checkout, so the build tools its prepare scripts need (its devDependencies) exist nowhere in the tree. With the package in trustedDependencies, bun ran the script anyway and it failed with "command not found". For a git/github dependency with a preprepare/prepare/postprepare script, the lifecycle script runner now runs `bun install --ignore-scripts --no-save` inside the package before the first of those scripts and deletes the resulting node_modules once the scripts finish. A node_modules folder that already exists in the package (conflicting versions bun nested there, or one committed to the repository) is moved aside for the duration and restored afterwards. The nested install gets the project's registry, token and cache directory through the environment variables bun install reads. Untrusted packages are unaffected: the scripts stay blocked and listed by `bun pm untrusted`, and `bun pm trust` goes through the same runner.
…after interrupted runs The set-aside directory now exists for the whole duration of the nested install (an empty placeholder when the package had no node_modules), so a run that finds it can tell an interrupted earlier run apart and keeps the original instead of deleting it. The cleanup also runs when the nested install or a script is killed by a signal or fails to spawn, and removes a bun.lock that the nested install wrote while migrating the checkout's package-lock.json, which --no-save does not prevent. The isolated-linker test case is skipped on Windows: the store path of a git dependency there is longer than MAX_PATH and every lifecycle script of such a package fails to spawn, independently of this change.
…e length-checked paths Also ties FIRST_PREPARE_INDEX to the script name table with a compile-time assertion, does not export an empty BUN_INSTALL_CACHE_DIR to the nested install, trims the comments, and documents the exact nested command and the restore step.
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Re-reviewed after the latest push — both earlier inline findings are addressed and this pass found nothing new. Given the scope (nested bun install spawn path, node_modules set-aside/restore across every exit arm, registry token forwarding), a human look is still worthwhile.
What was reviewed:
handle_exit:remove_prepare_dependencies()now runs on theExited-nonzero,Signaled,Err, andspawn_next_script-failure exits; the optional-dep arms delete the whole package dir so.bun-prepare-node_modulesgoes with it.- Tests: the two spawns that piped stdout without draining it now use
stdout: "ignore"; remaining spawns drain all pipes concurrently. set_aside_node_modules/NestedInstallCleanup::finish: interrupted-run recovery keeps the original and discards leftovers; ENOENT rename → placeholder mkdir; length-checked paths; failure to set aside warns and degrades to leaving deps in place.put_install_config_for_prepare:BUN_CONFIG_TOKENis only set alongsideBUN_CONFIG_REGISTRY.
Extended reasoning...
Overview
This PR makes bun install run a nested bun install --ignore-scripts --no-save inside a trusted git/github dependency's directory before its preprepare/prepare/postprepare scripts, so build tools from devDependencies are available (npm parity, issue #10297). The runner gains a PrepareDependencies state machine and NestedInstallCleanup that sets aside any pre-existing node_modules to .bun-prepare-node_modules, runs the nested install, runs the scripts, then removes the nested install's output and restores the original. Scripts.rs flags the case with install_dependencies_for_prepare and a FIRST_PREPARE_INDEX const with a compile-time assert. PackageManagerLifecycle.rs builds a second envp forwarding registry/token/cache-dir. Docs and a ~350-line test block (local git+file:// repo, Verdaccio, hoisted+isolated linkers, pm trust, failure messaging, interrupted-run recovery) are added.
Security risks
The nested install forwards BUN_CONFIG_REGISTRY and BUN_CONFIG_TOKEN from the parent's default scope into a subprocess whose cwd is the git checkout. The token is only ever set together with its own registry URL (guarded by did_override_default_scope || !scope.token.is_empty()), so it is not sent to a registry the checkout's own config might point at instead — but it is still the project's token going into an environment where the checkout's preprepare script runs afterward with the same envp the scripts already had (the install envp is separate). No new exposure beyond what running a trusted dependency's scripts already implies. The nested install runs with --ignore-scripts, so transitive-dep scripts don't execute. Path handling uses AutoAbsPathChecked and bun_sys wrappers; delete_tree targets are constructed from the package's own cwd (already validated as the install location) plus fixed literals, not attacker-controlled names.
Level of scrutiny
High. This is ~690 lines across the package manager's lifecycle-script runner — subprocess spawning with a refactored argv builder, filesystem rename/delete of node_modules trees on every exit path, and credential forwarding. It's cross-platform (Windows-gated isolated-linker skip, renameat semantics) and the failure-path matrix (non-zero exit × signal × spawn error × optional dep × interrupted prior run) is exactly the kind of thing that needs a maintainer's eyes. The known-limits list in the PR description (scoped registries not forwarded, files not applied, transitive scripts skipped) is a set of policy calls a maintainer should sign off on.
Other factors
Both inline findings from the earlier revision are now fixed in the code: every diverging arm of handle_exit and both spawn_next_script error sites route through remove_prepare_dependencies() (or, for optional deps, delete the whole package directory which subsumes it), and the two tests that piped stdout without draining now use stdout: "ignore". Test coverage is thorough and hermetic (local git repo + Verdaccio, no network), asserts stderr before exitCode, and uses .toEqual on combined-state objects. The bug-hunting pass on this revision reached a dry streak with no findings.
…olated-linker test on Windows `bun_sys::mkdir` goes through libuv on Windows and fails with ENAMETOOLONG past MAX_PATH; `mkdirat` takes the same long-path route as the `renameat` next to it. With main bounding isolated store entry names, the isolated linker case passes on Windows, so its skip is gone.
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Note GitHub couldn't provide a complete incremental comparison for this pull request, so CodeRabbit is performing a full review instead. This review may take a little longer. |
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Note GitHub couldn't provide a complete incremental comparison for this pull request, so CodeRabbit is performing a full review instead. This review may take a little longer. |
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Actionable comments posted: 3
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Inline comments:
In `@src/install/lifecycle_script_runner.rs`:
- Around line 1346-1356: Update exit_after_spawn_failure to accept err as
crate::Error by value instead of by reference, then pass the Error value
directly at all three call sites while preserving the existing error reporting
and exit behavior.
In `@src/install/PackageManager/PackageManagerLifecycle.rs`:
- Around line 446-469: The put_install_config_for_prepare method must forward
the scoped registry configuration from PackageManagerOptions::registries to the
nested install, not only options.scope. Export the registry and token
environment settings for each configured scope using the format consumed by
scope_for_package_name, while preserving the existing default-scope and
cache-directory forwarding.
In `@test/cli/install/bun-install-lifecycle-scripts.test.ts`:
- Around line 2130-2131: Replace the for-loop parameterization around the
linker-specific test with describe.each() over the existing "hoisted" and
"isolated" values, preserving the test body and linker interpolation; update the
closing block to match the describe.each structure.
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Beyond the inline finding, I re-checked the two concerns from the earlier review: remove_prepare_dependencies() is now called on the Status::Signaled, Status::Err, and exit_after_spawn_failure paths (src/install/lifecycle_script_runner.rs:1135, 1165, 1355), and the two tests that piped stdout without draining it now use stdout: "ignore" — both are addressed.
Extended reasoning...
The latest push (8705a4e) switched mkdir to mkdirat for the placeholder and removed the Windows skip on the isolated-linker test; the commit message says main now bounds isolated store entry names so the MAX_PATH issue is gone. I verified the two earlier inline comments from this reviewer are resolved in code: cleanup now runs on every diverging arm of handle_exit and in exit_after_spawn_failure, and the tests that previously left a piped stdout undrained now spawn with stdout: "ignore" (or drain all three in Promise.all). Nothing further to add beyond the posted inline finding about the PR description vs. the now-unskipped isolated-linker test.
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CI status for 2736cba (build 107285, rebased onto current main): the new lifecycle tests pass on every lane, including the isolated-linker case on both Windows lanes. The build is red on three tests that this change does not touch and that are not in the install area: |
Problem
preparescript with tools from theirdevDependencies(tsc,tshy,tsup, ...), and nothing installs those devDependencies.trustedDependencies, bun runs the script anyway and the whole install fails:bash: tshy: command not found/error: prepare script from "rimraf" exited with 127.bun pm trust <pkg>fails the same way.Scripts::get_script_entries(src/install/lockfile/Package/Scripts.rs) queues the prepare family forGit/Githubresolutions like any other lifecycle script, andLifecycleScriptSubprocessruns it innode_modules/<pkg>with only the package's hoisted runtime dependencies around. npm and pnpm install the checkout's dependencies and devDependencies before runningprepare.Fix
Listgetsinstall_dependencies_for_prepare, set increate_listforGit/Githubpackages that have apreprepare/prepare/postpreparescript.lifecycle_script_runner.rs) then spawnsbun install --ignore-scripts --no-savewith the package directory as cwd before the first prepare-family script, runs the scripts as before, and removes what the nested install left when the last script exits or anything fails (non-zero exit, signal, spawn failure).--ignore-scriptsbecause the runner is in the middle of running this package's own scripts;--no-saveso the package.json and a committed lockfile stay as they are. Abun.lockthe nested install still writes while migrating a committedpackage-lock.json(bun saves migrated lockfiles regardless of--no-save) is removed too.node_modulesmatters: the nested install also installs the package's peer and regular dependencies, so leaving it in place would make the package load its own copies ofreactand friends instead of the project's. The package's runtime dependencies are the ones the project installed, outside the package directory with both linkers.node_modulesthe package already has (with the hoisted linker: version conflicts bun nested there; or one committed to the repository) is renamed to.bun-prepare-node_modulesfor the duration and renamed back at the end; an empty placeholder is created when there was none. Finding that directory already present means an earlier run was interrupted: it still holds the original, so the currentnode_modulesis the leftovers and gets deleted instead. If the package directory cannot be prepared this way (rename/mkdir failure, path too long), bun warns and leaves the installed dependencies in place.spawn_package_lifecycle_scriptsbuilds a second environment for the nested install withBUN_CONFIG_REGISTRY(+BUN_CONFIG_TOKEN, only ever together with its registry) when the project overrides the default registry or has a token, andBUN_INSTALL_CACHE_DIR. The nested install's project directory is the checkout, so it would not otherwise see the project'sbunfig.toml/.npmrc.error: bun install --ignore-scripts --no-save for the prepare script of "<pkg>" exited with 1; scripts keep their existingerror: prepare script from "<pkg>" exited with Ntext. Optional dependencies are dropped like they are for any failing script.Blocked 1 postinstall/bun pm untrustedas before), for--ignore-scripts, or for npm/folder/tarball packages.bun pm trustand the isolated linker use the same runner.describeblock in test/cli/install/bun-install-lifecycle-scripts.test.ts: hoisted and isolated linker (the repository ships apackage-lock.json, so the migratedbun.lockcleanup is exercised), a pre-existing nestednode_modulesand a committedbun.locksurvive while the devDependency is removed,bun pm trust, a failing nested install, and recovery from an interrupted run. Against the released bun, 8 of the original 10 cases fail withwhat-bin: command not found/ exit 127; with this change all pass.preprepare/prepare/postpreparetest now also exercises the nested install);cargo check -p bun_install --target x86_64-pc-windows-msvcis clean.mkdirat, which takes the long-path route there;mkdirgoes through libuv and stops at MAX_PATH).trustedDependenciesis what turnsprepareon.Fixes #10297
Supersedes #35677, which injected the nested install into the
preprepareslot but left the installed devDependencies (and peers) innode_modules/<pkg>/node_modules.Known limits, unchanged from before: the checkout is copied as is (
filesis not applied), the lifecycle scripts of the package's own dependencies do not run during the nested install, and scoped registries /_authcredentials are not forwarded to it. Whetherprepareshould run withouttrustedDependencies(npm's behavior) is a separate policy decision and not touched here.Background
package.jsonscriptsthat package managers run while installing.preinstall/install/postinstallrun for every installed package;preprepare/prepare/postpreparerun for the project itself and, because there is no published build to download, for packages installed from git. Bun only runs a dependency's scripts if it is intrustedDependencies(git dependencies are never in the default allow list).LifecycleScriptSubprocess: one instance per package with scripts. It holds the package'sList(one optional command per script slot, inScripts::NAMESorder: preinstall, install, postinstall, preprepare, prepare, postprepare), spawns the slots one after another throughsh -c(bun execon Windows), and handles each exit inhandle_exit. The nested install is one more spawn of the same object, with a direct argv instead of a shell command;current_script_indexkeeps pointing at the prepare script it is preparing for.node_modulesand puts version conflicts intonode_modules/<pkg>/node_modules; the isolated linker puts each package innode_modules/.bun/<pkg>@<version>/node_modules/<pkg>with its dependencies symlinked next to it. In both layouts the package's runtime dependencies live outside the package directory, which is why everything the nested install writes inside it can be removed again.Earlier revision
The first push deleted a leftover
.bun-prepare-node_modulesat the start of a run and only cleaned up on a non-zero exit, which would have destroyed the package's own nested dependencies after an interrupted run; it also left a migratedbun.lockbehind and reported a failed nested install asinstalling the dependencies of "<pkg>" for its prepare script failed (...). Review of that revision led to the placeholder/interrupted-run handling, the cleanup on every failure path, the lockfile removal, the shared message prefix, and the length-checked paths described above.no test proof · iteration 5 · platform-specific test(s) that do not run on this machine, deferring to CI, which covers all platforms: test/cli/install/bun-install-lifecycle-scripts.test.ts