librustdoc no longer part of distributable

[nrc]

librustdoc used to be distributed with other compiler crates and could be found in the sysroot. This is no longer the case which breaks any crate which does extern crate rustdoc;.

I assume this wasn't intentional and is due to the changes with how rustdoc is being built.

cc @Mark-Simulacrum @alexcrichton

[alexcrichton]

Hm this was indeed intentional, all due to #43482. That being said, it wasn't intended to break things!

@nrc did you have tools using extern crate rustdoc out of tree? That's sort of something I'd hope that we wouldn't have to keep working :(

[Mark-Simulacrum]

Yes, this was indeed intentional. We can technically fix this I think if we need to, but I'd prefer not to -- it'd be a bit of a hack.

[nrc]

did you have tools using extern crate rustdoc out of tree?

Yes, rustw does. It only uses its markdown rendering though. I'd assume I could pull that into an external crate, but iirc, the last time I tried that it was tied into rustdoc and compiler internals in weird ways.

I'll look into that - I assume Steve will have to solve a similar problem for new rustdoc, so maybe I can use that?

[Mark-Simulacrum]

Well, if it's not working out to migrate to either the new rustdoc or otherwise solve the problem, let us know and we can discuss making librustdoc remain in the sysroot.

[Mark-Simulacrum]

@rfcbot fcp close

Let's see if this works...

If not, I'll just close; I don't think this is going to change. rustdoc is unstable, and shouldn't really be used for markdown rendering anyway...

[rfcbot]

Team member @Mark-Simulacrum has proposed to close this. The next step is review by the rest of the tagged teams:

• @Mark-Simulacrum
• @TimNN
• @aidanhs
• @alexcrichton
• @aturon
• @carols10cents
• @erickt
• @frewsxcv
• @shepmaster

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