tox

Tox is primarily designed for Python and lacks robust support for other languages, limiting its utility in polyglot projects.

Advanced scenarios often require complex tox.ini configurations which can be error-prone and difficult to maintain.

Creating multiple virtual environments for testing can significantly slow down the test execution process, especially in large projects with many dependencies.

While basic usage is well-documented, more complex configurations and troubleshooting guides are sparse, leading to a steep learning curve for advanced users.