Join the #reproducible-builds:nixos.org channel on matrix.

To rebuild a package locally and check it matches the one from the binary cache you can use nix-build '<nixpkgs>' -A notion --check. This does not ‘actively’ vary the environment like reprotest does, but will catch basic reproducibility problems.

See r13y.com for the status of our current milestone: building the nixos-unstable minimal ISO reproducibly. More information on the problems listed there can be found on this pad.

Look for pull requests and issues around reproducible builds.

Look into trustix.

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