Navigating the jungle of reproducible environments can be pretty tough, as there is a myriad of problems to consider: does this language-specific package manager build packages reproducibly? How does it integrate its external dependencies? Is the compiler bootstrapped? Will all the metadata it's using disappear in X years? Will my distributed artifacts work without external assumptions? Do I have tools and guarantees to examine all of this?

With these interrogations in mind, I will give an overview of Guix, the swiss army knife of environments, and describe how it can help you achieve reproducibility. I will also be comparing it with some other practices I've seen and try to dismiss some misconceptions about them, highlighting Guix's strengths.