Running tests locally. It's primitive, but incredibly reliable, and a breeze to debug if (big if) there is any dependency issue.

How do you ensure you or your contributors didn’t forget to run the tests?

You’d need at least some hash of sources + test results, and check that it matches that (in CI).

And you’d still deal with environment differences.

	▲	nomilk 26 minutes ago \| parent [-]
		> How do you ensure you didn’t forget to run the tests? Reasonable concern. In ~10 years of indy development, I haven't forgotten to run tests before pushing to main, ever. So setting up and maintaining complicated machinery to solve a problem that could (but never has) happened doesn't justify taking focus off other more important things, namely building. The benefit probably increases with team size (I'm a team of 1, so I appreciate the luxury of being able to dodge CI/CD entirely).