Make a service from a third party library?

Question

symfony

Composer loaded the library and is available PSR-4 by namespace. There you need to pass one parameter to the constructor, I try to define it as a service, but it does not find this class - it says that it does not exist, but everyone, including the IDE, sees it. If you try to add by use ... new ... it is, but as a service, it does not want to.

services:

  Some\Other\Libs:
    public: true
    arguments:
      $projectDir: '%kernel.project_dir%'

Answer 1

Everything is correct. The old version of the library package with an error in the paths was simply preserved. Reinstalled from scratch and it worked.