* Support revisions
Cabal files are now obtained from the index tarball (as cabal does)
directly. This allows us to always pick the cabal file revision that
cabal would pick, without having to understand or reference hackage.
* Update nix-tools materialised plan for new tooling
* Update materialized files
* Eval on x86_64-linux
* Turn off full materialization check
* Replace pkgs.writeText with passAsFile
Nix derivations are already able to pass a attribute to the builder as a
file. This means we don't need to use pkgs.writeText to turn the
cabalFile attribute into a file, saving one derivation.
* Bump closure size limit to 540
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Co-authored-by: Hamish Mackenzie <Hamish.K.Mackenzie@gmail.com>
