Use custom service in place of PHPStan's implementation

[kingkero]

I want to tinker with how PHPStan validates the result cache (i.e. ignore PHP version or PHP extensions). For this I found out that this part is managed via the following lines in the config:

	-
		implement: PHPStan\Analyser\ResultCache\ResultCacheManagerFactory
		arguments:
			scanFileFinder: @fileFinderScan
			cacheFilePath: %resultCachePath%
			analysedPaths: %analysedPaths%
			composerAutoloaderProjectPaths: %composerAutoloaderProjectPaths%
			usedLevel: %usedLevel%
			cliAutoloadFile: %cliAutoloadFile%
			bootstrapFiles: %bootstrapFiles%
			scanFiles: %scanFiles%
			scanDirectories: %scanDirectories%
			checkDependenciesOfProjectExtensionFiles: %resultCacheChecksProjectExtensionFilesDependencies%

Is it possible to use either a custom factory or make that factory return a custom implementation of the ResultCacheManager?

I tried:

• Putting the ResultCacheManager in a custom directory and pointing compoer.json's autoload PSR-4 section to this directory (in the hopes that autoloading would pick my class over PHPStan's one) - no error but no result.
• Implementing the ResultCacheManagerFactory interface in my code - gave nette exceptions about having 2 possible candidates for the injection, wasn't able to solve this.

[ondrejmirtes]

It's not possible, because some things from PHPStan core are not meant to be overridable. Instead of overriding and doing your own implementation, you should open feature requests to enhance PHPStan core. But they need to make sense for the general PHPStan userbase.

I don't think you really want to ignore a change in PHP version for the purpose of result cache as that will often lead to a stale cache.

[kingkero]

Thanks for the quick reply, I'll stop putting more efforts into this.

We have minor differences in setups between CI and Test, so initially my thought was that it might be simpler to exclude phpExtensions or PHP patch version from matching, instead of fixing the actual root cause.

These are not things relevant for the general userbase.