Update protobuf and remove old versions #29134
Merged
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Motivation for this change
First motivation was to update protobuf to 3.4 so that TensorFlow 1.3 could be used. Later I updated all nixpkgs to use protobuf 3.4 (the latest version), sans one package that needs an old version (3.1).
Things done
build-use-sandbox
innix.conf
on non-NixOS)nix-shell -p nox --run "nox-review wip"
./result/bin/
)Remaining packages which don't build with this change seem to fail because of unrelated reason.