Project's flake is incomplete.

[2coffee2crab]

Chore

Describe the chore

The flake provided on the repo does not produce a viable development environment.

Additional context

The project's README file mentions that one can use nix develop to set up a suitable environment. However, this environment is incomplete: trying to compile the codebase will fail for several reasons:

• Compilation fails at pgt_query with a bindgen error, because libclang is not included in the environment.
• bindgen also fails to find headers from the standard library unless LIBCLANG_PATH is properly set.¹
• Compilation of tikv-jemalloc-sys fails. This one is trickier, the issue comes from nixpkgs and their environment, because it adds the -Wall flag during compilation.²³

In addition, the development environment is missing some packages: docker, docker-compose and docker-buildx. I think the latter may not be necessary, but Docker will issue a warning if it isn't present.

Finally, on the topic of unused packages: I'm not sure all the settings included on the flake are necessary, but I just started reading through the codebase, so I thought better not to remove anything.

I changed the flake.nix to address the above issues, and can confirm that it's working on NixOS. I'd be more than happy to open a PR if you want.

Cheers!

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Relevant issues

Several have been reported multiple times, I added the ones that offered a solution.

Footnotes

1. Unset LIBCLANG_PATH issue ↩

2. tikv-jemalloc-sys build fails on newer clang packages from nixpkgs: issue. ↩

3. Some versions of GCC on nixpkgs have unwanted flags: issue. ↩