How can we guarantee reproducible builds across different machines and OS versions?

[kenshin101]

On Machine A

pip install -r requirements.txt
pip freeze > lockA.txt

On Machine B

pip install -r requirements.txt
pip freeze > lockB.txt

Compare results

diff lockA.txt lockB.txt

❌ Different versions due to dependency resolution

[shafayatsaad]

• Use lock files (poetry.lock, package-lock.json).
• Pin exact versions of compilers and dependencies.
• Use hermetic build systems (Nix, Bazel).