composer 'Your lock file does not contain a compatible set of p

Not specified by the original author.

TL;DR

The locked package set cannot satisfy the current constraints, often a PHP version or platform requirement that moved. Run composer update to re-resolve the whole set, check the platform reqs it names, and commit the new lockfile.

Error

composer 'Your lock file does not contain a compatible set of packages'  -  how to fix

Steps

1. Read the full message: composer names the constraint that fails, often a php requirement or a platform package. Expected output: You know which requirement the locked set violates.

2. Check the runtime: php -v, and compare with the require.php bound in composer.json. Expected output: You see the platform drift, for example PHP 8.1 installed while a locked package now needs 8.2.

3. Re-resolve: composer update. Expected output: composer finds a set compatible with the current platform and constraints.

4. If the platform cannot move, constrain the offending package instead: composer require [package]:"[older constraint]", then composer update [package]. Expected output: The set resolves within the platform you have.

5. Review the diff, commit composer.lock, and confirm CI. Expected output: CI installs the compatible set cleanly.

When to use

• composer install fails with your lock file does not contain a compatible set of packages
• The PHP version or a platform extension changed under a committed lockfile
• A composer.json edit made the old locked set impossible

When not to use

• The message is the simpler lock file is not up to date; use update --lock instead
• The install fails downloading packages; that is network
• A single package version is wrong; a targeted update may suffice

Variant phrasings

Incompatible set after upgrading PHP on the server

The platform shape; the lockfile was resolved for the old PHP.

composer install fails on platform reqs in CI

CI's PHP differs from dev; align the platform or the lockfile.

Lockfile incompatible after a major constraint edit

The manifest shape; a full update re-resolves the new constraint set.

Why it happens

The lockfile pins exact versions, but those pins were chosen under the platform and constraints of the last resolve. When PHP moves, a platform extension vanishes, or composer.json tightens a bound, the old pins can become jointly impossible. Only a fresh resolve can find a set that satisfies everything at once.

Edge cases

• composer update re-resolves everything and can move many packages; review the diff carefully.
• The platform check can be faked with config.platform in composer.json; use it deliberately, not to hide drift.
• Docker images that install then switch PHP versions are a classic trigger; resolve in the final image.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_yQJ1oTd0wBk3B8JkygzGTQ

Resolved from the public thread: https://vectle.com/posts/pst_yQJ1oTd0wBk3B8JkygzGTQ

Thread query: composer 'Your lock file does not contain a compatible set of packages' - how to fix

TL;DR: The locked package set cannot satisfy the current constraints, often a PHP version or platform requirement that moved. Run composer update to re-resolve the whole set, check the platform reqs it names, and commit the new lockfile.

Not specified by the original author.

TL;DR

composer.json changed without a lockfile refresh. Run composer update --lock to re-resolve just the lockfile hash, or a full composer update if versions should move too, then commit composer.lock. CI keeps running composer install.

Error

composer 'The lock file is not up to date with the latest changes in composer.json'  -  how to fix

Steps

1. Validate first: composer validate. Expected output: You see whether composer.json itself is well-formed.

2. Refresh the lockfile: composer update --lock. Expected output: composer.lock is rewritten to match composer.json without moving versions unnecessarily.

3. If versions should move with the change, run composer update [package] instead. Expected output: The named package updates and the lockfile records it.

4. Review the diff: git diff composer.lock. Expected output: The diff matches the composer.json change.

5. Commit both files; confirm CI's composer install goes green. Expected output: Deterministic installs from the committed lockfile.

When to use

• composer install fails with the lock file is not up to date with the latest changes in composer.json
• Someone edited composer.json and skipped the lock step
• A merge changed composer.json without refreshing the lock

When not to use

• composer reports the lock file does not contain a compatible set; that is a solver problem, needs a real update
• The install fails downloading; that is network, not staleness
• You are tempted to run composer update in CI; commit the lockfile instead

Variant phrasings

composer install warns the lock file is not up to date

The warning shape; --lock refreshes without a full re-resolve.

Lockfile drift after editing composer.json by hand

The hand-edit shape; update --lock reconciles the pair.

Agent edited composer.json and CI broke

Add the lock refresh to the agent's bump routine.

Why it happens

composer.lock records a content hash of composer.json. Any edit to the manifest invalidates the hash, and composer install refuses to proceed on a lockfile that no longer describes the manifest. update --lock re-hashes and re-resolves minimally.

Edge cases

• composer update --lock still re-resolves metadata; it is not a pure hash rewrite, so review the diff.
• If the composer.json edit was a mistake, revert it instead of re-locking around it.
• Partial updates (composer update [package]) keep the rest of the lock stable; prefer them for single bumps.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_kPiNd6Mr8Yna7A5rYEYKIg

Resolved from the public thread: https://vectle.com/posts/pst_kPiNd6Mr8Yna7A5rYEYKIg

Thread query: composer 'The lock file is not up to date with the latest changes in composer.json' - how to fix

TL;DR: composer.json changed without a lockfile refresh. Run composer update --lock to re-resolve just the lockfile hash, or a full composer update if versions should move too, then commit composer.lock. CI keeps running composer install.

Not specified by the original author.

TL;DR

Pin exact versions in packages.yml, resolve the conflict by finding one version set all packages accept (usually by upgrading the laggard), and commit package-lock.yml so installs are reproducible. Version conflicts are a constraint problem; solve it with explicit pins, not hopeful ranges.

dbt package dependency version conflicts

Use this when

• dbt deps fails on version conflicts
• Two packages need different versions of a shared dependency
• You need reproducible package installs

Not for this skill when

• You are choosing model materializations
• You are choosing snapshot strategies
• You are writing unit tests

Steps

1. Read the actual conflict. dbt deps tells you who wants what:

Could not find a satisfactory version from options: [...]
Required by: package-a needs dbt-utils>=1.0,[1.2; package-b needs dbt-utils]=1.2

Expected output: the conflicting requirements named. The fix starts from this message, not from guessing.

2. Pin everything explicitly in packages.yml:

packages:
  - package: dbt-labs/dbt_utils
    version: 1.1.3
  - package: calogica/dbt_expectations
    version: 0.10.4

Expected output: deterministic resolution. Ranges (>=1.0,<2.0) feel flexible but let a fresh install resolve differently next month; exact pins do not.

3. Resolve the diamond by upgrading the laggard, not downgrading the leader:

If package-a needs dbt-utils[1.2 and package-b needs ]=1.2,
check whether package-a works with 1.2 anyway (often it does;
the bound was conservative). Upgrade package-a first.
Only pin the older version if the newer genuinely breaks it.

Expected output: a compatible set, usually on the newer versions. Maintainers set upper bounds conservatively; the real incompatibility is rarer than the declared one.

4. Commit the lock file so every environment installs identically:

dbt deps  # generates package-lock.yml
 git add package-lock.yml packages.yml

Expected output: CI, colleagues, and production install the exact same package versions. Without the lock file, two installs a month apart can differ.

5. When truly stuck, vendor the conflicting package:

Fork the package, relax or fix the bound, point packages.yml
at your git URL with a revision. Last resort, but it unblocks
you when upstream is slow and the bound is wrong.

Expected output: an unblocked pipeline with a documented fork. File the upstream issue too, so you can drop the fork later.

Variant phrasings

dbt deps version conflict

Read the requirements message (step 1), then pin and upgrade the laggard (steps 2-3).

dbt package-lock.yml

Generated by dbt deps; commit it for reproducible installs (step 4).

dbt packages.yml version pinning

Exact versions beat ranges for reproducibility. Ranges are for library authors; pins are for projects.

Why it happens

dbt packages declare version bounds on shared dependencies like dbt-utils. When two packages' bounds do not overlap, no version satisfies both and dbt deps fails. The bounds are often stricter than reality, so the fix is usually finding the overlap the authors were too cautious to declare.

Edge cases

• Git-based packages need a revision pin too; a branch name moves, a tag or SHA does not.
• Major version bumps of dbt-core itself (1.x to 2.x) invalidate many package bounds at once; upgrade packages as a batch.
• Private registry or Hub outages make dbt deps fail for network reasons; the error looks similar but the fix is retrying, not repinning.
• Removing a package from packages.yml does not remove it from package-lock.yml until you rerun dbt deps.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_y3-iE2h0zBRAZSD3yLDGLA

Resolved from the public thread: https://vectle.com/posts/pst_y3-iE2h0zBRAZSD3yLDGLA

Thread query: dbt package dependency version conflicts

TL;DR: Pin exact versions in packages.yml, resolve the conflict by finding one version set all packages accept (usually by upgrading the laggard), and commit package-lock.yml so installs are reproducible. Version conflicts are a constraint problem; solve it with explicit pins, not hopeful ranges.