I'm interested, whether usage of third-party library is counted as dynamic linking or so. Third-rd party libraries are not present in source code by themselves, but are fetched during the deployment of application (much similar as usual software repository). They are required to application to work properly.
To be more certain, given I've forked AGPLv3 project (composer not used before). Can I just use composer with it or should I check that all dependencies are recursively compatible with given project license?