No, it's not about the reproducibility of crates or language-package-manager-packages, it's only about the reproducibility of packages in specific linux distrib

No, it's not about the reproducibility of crates or language-package-manager-packages, it's only about the reproducibility of packages in specific linux distributions. Those linux distributions often include their own custom build scripts and patches to make things reproducible. Debian isn't just execing "npm install" or "cargo install" when you "apt install <package>", so "reproducibility" in the context of this webpage doesn't necessarily mean anything at all about specific crates/packages, other than that the debian/arch/opensuse maintainers were able to make their build process for that package, possibly with patches, reproducible.