feat: Add git info to build

[max-sixty]

Not finished; needs some cleaning + need to resolve how the tests & book should work Ready to merge

Would replace #4546 (hope that's OK!)

[max-sixty]

This requires bumping the MSRV from 1.70.0 to 1.73.0. Would that be OK with everyone? @eitsupi ?

Debian is now on 1.79.0. 1.73.0 is 10 months old.

[vanillajonathan]

Bumping MSRV is fine.
Note that using fetch-tags: true may make the repo cloning take a longer time.

[eitsupi]

Thanks for working on this.
I think this feature is great and setting the MSRV to 1.73 is fine, but I don't know if this design is reasonable.
Do you know of any projects that would be helpful?

[max-sixty]

Do you know of any projects that would be helpful?

The benefit is to give us an exact version for reproducing issues. For example, if I launch a playground on this code, I get -- Generated by PRQL compiler version:0.13.0-31-gfa46187 (https://prql-lang.org), rather than 0.13.1, which isn't quite correct.

edit: I think probably I misunderstood, given you also said "I think this feature is great" — can I ask what you mean by " Do you know of any projects that would be helpful?"? TY!

[max-sixty]

I switched to using gitcl, because of rustyhorde/vergen#359. That uses the git command line — a bit less elegant but OK for the moment.

I would have thought it would be a bit slower, but actually the time to execute time bash -c 'touch prqlc/prqlc/src/lib.rs; cargo build -p prqlc' isn't noticeable. (Possibly because there's lots of noise already in that timing — anything from 1.8s to 2.4s...)

time bash -c 'touch prqlc/prqlc/src/lib.rs; cargo build -p prqlc'
   Compiling prqlc v0.13.1 (/Users/maximilian/workspace/prql/prqlc/prqlc)
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.90s

________________________________________________________
Executed in    1.95 secs    fish           external
   usr time    1.55 secs   65.00 micros    1.55 secs
   sys time    2.29 secs  371.00 micros    2.29 secs

[eitsupi]

can I ask what you mean by " Do you know of any projects that would be helpful?"? TY!

Sorry for failing to ask the right question. I just wanted to know if there are other packages out there with similar functionality.

[max-sixty]

Sorry for failing to ask the right question. I just wanted to know if there are other packages out there with similar functionality.

Ah, sorry, I understand now!

Lots of python projects do this — so running xarray.__version__ gives a git hash when it's not on a tag, for example.

For rust — I browsed dependents of vergen, which has 20K repos and 200 packages. GitHub doesn't organize by popularity, but one random example is https://github.com/sxyazi/yazi/blob/d2ebadb6314e3d124a173b6683399e8d33acb429/yazi-cli/build.rs#L8