nmeum

There is a fun footgun related to compile-time code generation using procedural macros in Rust: if the macro has non-deterministic behavior, then the build process of any crate using it is not reproducible.

Here's a little write-up explaining how I uncovered such an issue in the hashify crate while trying to package Rust software for Guix: https://notes.8pit.net/notes/iqfs.html

#Guix #Rust #reproducibility #ReproducibleBuilds