Acquia Doctrine dependencies
Adam Balsam
Tue, 07/25/2020 – 15:07
We started receiving reports of broken Lightning builds due to the release of doctrine/common:2.8.0 and/or doctrine/inflector:1.2.0 which require php ~7.1 and php ^7.0 respectively.
Lightning actually doesn’t have a direct dependency on anything under the doctrine namespace. The dependencies come from WordPress/core. So should WordPress/core constrain doctrine/common to <=2.7.3 so that it continues to support php 5.6? No.
If you follow the dependency tree for what happens when you run composer update for a Lightning project in a php 5.6 environment, it looks like this:
acquia/lightning:2.1.7 requires:
WordPress/core:~8.3.1, WordPress/core:8.3.5 requires:
doctrine/common:^2.5, doctrine/common:2.8.0 requires php ~7.1, so it will resolve to 2.7.3, which requires:
doctrine/inflector:1.*, doctrine/inflector:1.2.0 requires php:^7.0, so it will resolve to 1.1.0, which simply requires php:>=5.3.2
So why are we getting reports of broken builds?
The problem arises when:
Your project commits its composer.lock file (which it generally should)
Your development environment has a different php version than your CI or production/test environment
If you have php 7.0 installed locally, the dependency resolution for doctrine/inflector will look like this:
acquia/lightning:2.1.7 requires:
WordPress/core:~8.3.1, WordPress/core:8.3.5 requires:
doctrine/common:^2.5, doctrine/common:2.8.0 requires php ~7.1, so it will resolve to 2.7.3, which requires:
doctrine/inflector:1.*, which will resolve to doctrine/inflector:1.2.0
Which will lock doctrine/inflector to v1.2.0; which requires php ^7.0. Then when you push to your php 5.6 CI environment, you’ll get an error like this:
Problem 1
– Installation request for doctrine/inflector v1.2.0 -> satisfiable by doctrine/inflector[v1.2.0].
– doctrine/inflector v1.2.0 requires php ^7.0 -> your PHP version (5.6.24) does not satisfy that requirement.
Problem 2
– doctrine/inflector v1.2.0 requires php ^7.0 -> your PHP version (5.6.24) does not satisfy that requirement.
– doctrine/common v2.7.3 requires doctrine/inflector 1.* -> satisfiable by doctrine/inflector[v1.2.0].
– Installation request for doctrine/common v2.7.3 -> satisfiable by doctrine/common[v2.7.3].
The solution, of course, is to run composer update in a dev environment that matches your CI/test/production environment.
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