* feat(manager): pass extracted constraints to updateArtifacts `extractedConstraints` were collected during extraction but only ever read by `fetch.ts` for the lookup. At artifact time every manager had to derive the same tool constraints a second time, and when the updated package file no longer carried the constraint there was nothing to fall back to. `generateBranchConfig()` now merges the `extractedConstraints` of all upgrades of a branch onto the branch config, which reaches `updateArtifacts()` through `patchConfigForArtifactsUpdate()`. `UpdateArtifactsConfig` declares the field and documents what it contains. The new `resolveToolConstraint()` helper implements the ladder once: user `constraints` > an optional artifact-time derivation > the extracted value. The derivation is ranked above the extracted value on purpose: it reads the package files as the branch changed them, so poetry (python is an updatable dependency there), composer, pipenv (`pipenv` can be a dev package) and pep621 (`requires-python` is an updatable dependency) would otherwise regress to a stale constraint. pipenv, pep621 uv/pdm, poetry and composer are migrated to the helper and keep their derivation. Behaviour change: these managers now use the extract-time constraint as a last resort instead of running unconstrained, for example on lock file maintenance where pipenv deletes `Pipfile.lock` before deriving. `execute-post-upgrade-commands.ts` is unaffected: it reads `upgrade.constraints` per upgrade, and the extracted values are kept in a separate field rather than folded into `constraints`, so post-upgrade task tool constraints still come from user config only. Not migrated, because their constraints are never extracted, so the fallback would be dead code: bundler (`ruby`/`bundler`), pixi (`pixi`), pep621 uv (`required-version`) and npm's node ladder, whose last step already reads `package.json` engines. * refactor(manager): resolve tool constraints through resolveToolConstraint() Every manager now obtains the constraint of a tool it runs through `resolveToolConstraint()` instead of reading `config.constraints` itself, so the precedence "user config, then a value derived from the updated files, then the constraints collected during extraction" applies everywhere. The helper treats an empty string as not set at every step and accepts the `PostUpdateConfig` shape, whose `constraints` may be `null`. Behaviour changes that go beyond the new fallback to extracted constraints: - `mix` applies its hardcoded erlang default only after the extracted constraint, so an erlang version collected at extraction can win over it. - `kustomize` decides `HELM_EXPERIMENTAL_OCI` from the fully resolved helm constraint; `generateHelmEnvs()` takes that value instead of the config. - `npm` (yarn): an upgrade of yarn without a new value now consults the user constraint before deriving one from package.json or the lock file. - The "Using <tool> constraint from config" debug lines in bundler, composer, copier and pip-compile are gone, as the helper is the only reader of the config now. Helpers that read the config synchronously became async: bundler `getBundlerConstraint()`, copier `getPythonVersionConstraint()` and `getCopierVersionConstraint()`, pip-compile `get*VersionConstraint()` and `getToolVersionConstraint()`, gomod `deriveGoToolchainConstraints()` and `getUpdateImportPathCmds()`, mise `getMiseLockToolConstraints()`. composer `getPhpConstraint()` is removed. Each converted manager has a test showing the extracted constraint reaching the executed tool, and, where a derive callback exists, that the derived value still wins over it. * refactor(linters): add prefer-resolve-tool-constraint rule Reports member reads and destructuring of `constraints` and `extractedConstraints` from a manager config in `lib/modules/manager/**`, so that tool constraints are resolved through `resolveToolConstraint()` in `lib/modules/manager/util.ts` only. Writes and the same properties on package files, which extraction has to populate, are not reported. The helper itself and spec files are exempt in `.oxlintrc.json`. * refactor(manager): inline thin resolveToolConstraint wrappers Drop copier/utils.ts and the pip-compile getPipToolsVersionConstraint / getUvVersionConstraint helpers, which only forwarded to resolveToolConstraint(). Callers now call it directly. * docs(development): note lock file maintenance in tool constraints section * refactor(manager): address review on tool constraint resolution composer only runs extractConstraints() when a user constraint is missing, via Lazy. UpdateArtifactsConfig no longer re-declares constraints and extractedConstraints, which ToolConstraintsConfig already provides.
npm problems and workarounds
Invalid lock file (npm ci fails)
Unfortunately, npm itself sometimes generates invalid lock files which fail npm ci.
Try adding "postUpdateOptions": ["npmInstallTwice"] to tell Renovate run any npm install command (which is used to update lock files) twice.
This is less efficient than running npm once, but has been known to fix most problems of this type.
Renovate already runs npm install twice during lock file maintenance, because regenerating a lock file from scratch is known to need a second pass.
If this npm bug remains unfixed, and it becomes too frequent for Renovate users, then we may need to modify Renovate to do this by default. Please post feedback to the Renovate repository "Discussions" if you're needing to use this feature frequently or widely.
Yarn
Version Selection / Installation
If Renovate detects a packageManager setting for Yarn in package.json then it will use Corepack to install Yarn.
HTTP Proxy Support
Yarn itself does not natively recognize/support the HTTP_PROXY and HTTPS_PROXY environment variables.
You can configure RENOVATE_X_YARN_PROXY=true as an environment variable to enable configuring of Yarn proxy (e.g. if you cannot configure these proxy settings yourself in ~/.yarnrc.yml).
If set, and Renovate detects Yarn 2+, and one or both of those variables are present, then Renovate will run commands like yarn config set --home httpProxy http://proxy prior to executing yarn install.
This will result in the ~/.yarnrc.yml file being created or modified with these settings, and the settings are not removed afterwards.
Configuration/conversion of NO_PROXY to Yarn config is not supported.