chore(prqlc): bump MSRV to 1.70.0

[eitsupi]

prqlc can now be binary installed on each platform.

I think the some of current problem with MSRV in dependencies is the prqlc dependency (#3520), so I think it makes sense to only update prqlc's MSRV.

[max-sixty]

Ah, brilliant!

Because we don't mind about Debian for prqlc, only for prqlr, and prqlr only requires prql-compiler?

This will make managing dependencies much easier...

[eitsupi]

Because we don't mind about Debian for prqlc, only for prqlr, and prqlr only requires prql-compiler?

Of course I think there is value in keeping MSRV small, but I thought it was worth thinking about this since clap's MSRV is now 1.70.

• prql-compiler needs to worry about downstream projects, but prqlc doesn't need to worry about downstream projects, so I think the impact of MSRV is small.
• prqlc has binaries in Homebrew and the official GitHub release, so I think many people install it from there.

[eitsupi]

By the way, Debian testing is now on the migration from rustc 1.67 to 1.69, and 1.70 is now experimental, so there is a possibility that it will be updated to 1.70 soon.
https://tracker.debian.org/pkg/rustc

Ubuntu LTSs are 1.66 now.
https://launchpad.net/ubuntu/+source/rustc

[max-sixty]

Of course I think there is value in keeping MSRV small, but I thought it was worth thinking about this since clap's MSRV is now 1.70.

Yes very much agree.

To confirm though — is the main reason we stay on a lower version because of prqlr on debian? And not prqlc?

[eitsupi]

To confirm though — is the main reason we stay on a lower version because of prqlr on debian? And not prqlc?

At least that's true for me.
Of course I'm monitoring Debian's rustc version, so as soon as they reach 1.70 I'll make changes here as well.
(I think setting it to 1.70 makes sense since many crates are starting to set MSRV to 1.70.)

[max-sixty]

At least that's true for me. Of course I'm monitoring Debian's rustc version, so as soon as they reach 1.70 I'll make changes here as well. (I think setting it to 1.70 makes sense since many crates are starting to set MSRV to 1.70.)

Perfect, thanks for the clarification and agree.