Turn rustc-dev-guide into a Josh subtree

[Kobzol]

Discussed on Zulip.

Accompanying rustc-dev-guide PR: rust-lang/rustc-dev-guide#2183

I didn't create a bootstrap step for rustc-dev-guide yet, because the rustc-dev-guide version that we currently use in this repo doesn't have linkcheck enabled and that fails tests.

The subtree starts with commit ad93c5f1c49f2aeb45f7a4954017b1e607df9f5e.

What I did:

export DIR=src/doc/rustc-dev-guide

# Remove submodule
git submodule status ${DIR}
git submodule deinit ${DIR}
git rm -r --cached ${DIR}
rm -rf ${DIR}
# Remove rustc-dev-guide from .gitmodules
git commit -m"Removed `${DIR}` submodule"

# Import history with josh
git fetch https://github.com/rust-lang/rustc-dev-guide ad93c5f1c49f2aeb45f7a4954017b1e607df9f5e
josh-filter ':prefix=src/doc/rustc-dev-guide' FETCH_HEAD
git merge --allow-unrelated FILTERED_HEAD

# A few follow-up cleanup commits

r? ehuss

[ehuss]

Thanks! I think there is a small list of prerequisites to move forward:

• Explicit approval from one of the rustc-dev-guide leads (@JohnTitor, @spastorino)
• Identify who specifically will be doing the pushing and pulling, approving reviews, how often that will be done, etc.
• Update triagebot.toml with whoever will be doing reviews. Please remove my name, I don't want to be assigned.
• Open a PR to remove rustc-dev-guide from triagebot here: https://github.com/rust-lang/triagebot/blob/0674aa256c6be600e3b0f1ea2e2cbc3250031175/src/handlers/docs_update.rs#L24
• (optional) Approve tooling/documentation/process for how you intend to do syncs: Add tooling for performing Josh synces rustc-dev-guide#2183

[ehuss]

You might also want to delete this line that updates the submodule, just in case someone in the future wants to get the test step running, to help avoid an obvious problem.

[JohnTitor]

+1, thank you!

[bors]

☔ The latest upstream changes (presumably #134926) made this pull request unmergeable. Please resolve the merge conflicts.

[rustbot]

triagebot.toml has been modified, there may have been changes to the review queue.

cc @davidtwco, @wesleywiser

[Kobzol]

• I will be doing the pushes & pulls, with the hope that it will become automated soon-ish (I will work on implementing CI workflows to automate it).
• Triagebot PR: Remove rustc-dev-guide as a submodule triagebot#1874
• I added myself as the ping person for rustc-dev-guide in triagebot.toml

[Kobzol]

Rebased.

[ehuss]

Thanks!

@bors r+

[bors]

📌 Commit 47e2baa has been approved by ehuss

It is now in the queue for this repository.

[matthiaskrgr]

@bors rollup=never

[bors]

⌛ Testing commit 47e2baa with merge c528b8c...

[bors]

☀️ Test successful - checks-actions
Approved by: ehuss
Pushing c528b8c to master...

[rust-timer]

Finished benchmarking commit (c528b8c): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results (primary -2.9%, secondary 0.0%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	2.8%	[2.8%, 2.8%]	1
Improvements ✅ (primary)	-2.9%	[-2.9%, -2.9%]	1
Improvements ✅ (secondary)	-2.8%	[-2.8%, -2.8%]	1
All ❌✅ (primary)	-2.9%	[-2.9%, -2.9%]	1

Cycles

This benchmark run did not return any relevant results for this metric.

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 764.563s -> 763.985s (-0.08%)
Artifact size: 325.55 MiB -> 325.58 MiB (0.01%)