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fix(package): Normalize paths in Cargo.toml #13729

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merged 3 commits into from
Apr 10, 2024
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@epage epage commented Apr 10, 2024

What does this PR try to resolve?

On the surface, this resolves problems that aren't too big of a deal

  • Clean up redundant information in paths (e.g. .////.//foo.rs being foo.rs) which is just visual
  • Switch paths with \ in them to /

However, this is prep for #13713 where these will be a much bigger deal

  • If the user does ./foo.rs, we might fail to compare that with the list of files included in the package
  • We'll generate paths with \ and need to make sure the packages can still be used on Windows

How should we test and review this PR?

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rustbot commented Apr 10, 2024

r? @ehuss

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@rustbot rustbot added A-manifest Area: Cargo.toml issues S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Apr 10, 2024
@epage epage marked this pull request as draft April 10, 2024 01:31
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ChrisDenton commented Apr 10, 2024

Would it be worth asserting that std::path::is_separator('/') is true for the platform? Mind you, off the top of my head, I can't think of any host platforms where that would be false.

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epage commented Apr 10, 2024

Would it be worth asserting that std::path::is_separator('/') is true for the platform? Mind you, off the top of my head, I can't think of any host platforms where that would be false.

I had wondered about something along those lines but then almost everything else will already be broken in cargo that I shrugged my shoulders. For example, every dependency you try to use will have / in the paths.

For now, this is more for visual consistency.
However, this blocks rust-lang#13713 as we need to be able to make these paths
comparable to what is included in the package.
A windows user could use `\` and no Linux or Mac user could use the
package.
This normalizes the separator to what works on all platforms.
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Thanks!

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@bors r+

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bors commented Apr 10, 2024

📌 Commit 8b593e5 has been approved by Muscraft

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Apr 10, 2024
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bors commented Apr 10, 2024

⌛ Testing commit 8b593e5 with merge f8a73f7...

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bors commented Apr 10, 2024

☀️ Test successful - checks-actions
Approved by: Muscraft
Pushing f8a73f7 to master...

@bors bors merged commit f8a73f7 into rust-lang:master Apr 10, 2024
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@epage epage deleted the slash branch April 10, 2024 16:18
bors added a commit to rust-lang-ci/rust that referenced this pull request Apr 10, 2024
Update cargo

11 commits in 28e7b2bc0a812f90126be30f48a00a4ada990eaa..74fd5bc730b828dbc956335b229ac34ba47f7ef7
2024-04-05 19:31:01 +0000 to 2024-04-10 18:40:49 +0000
- chore: downgrade to openssl v1.1.1 (again) (rust-lang/cargo#13731)
- fix(cargo-fix): dont apply same suggestion twice (rust-lang/cargo#13728)
- refactor: make `resolve_with_previous` clearer (rust-lang/cargo#13727)
- fix(package): Normalize paths in `Cargo.toml` (rust-lang/cargo#13729)
- refactor: Track when MSRV is explicitly set, either way (rust-lang/cargo#13732)
- [fix]:Build script not rerun when target rustflags change (rust-lang/cargo#13560)
- feat(add): Stabilize MSRV-aware version req selection (rust-lang/cargo#13608)
- Fix github fast path redirect. (rust-lang/cargo#13718)
- Add release notes for 1.77.1 (rust-lang/cargo#13717)
- doc(semver): remove mention of deprecated tool rust-semverver (rust-lang/cargo#13715)
- chore: fix some typos (rust-lang/cargo#13714)

r? ghost
@rustbot rustbot added this to the 1.79.0 milestone Apr 10, 2024
bors added a commit that referenced this pull request Apr 29, 2024
fix(toml): Warn, rather than fail publish, if a target is excluded

### What does this PR try to resolve?

We have a couple of problems with publishing
- Inconsistent errors: if a target that `package` doesn't verify is missing `path`, it will error, while one with `path` won't, see #13456
- Users may want to exclude targets and their choices are
  - Go ahead and include them.  I originally excluded my examples before doc-scraping was a think.  The problem was if I had to set `required-features`, I then could no longer exclude them
  - Muck with `Cargo.toml` during publish and pass `--allow-dirty`

This fixes both by auto-stripping targets on publish.  We will warn the user that we did so.

This is a mostly-one-way door on behavior because we are turning an error case into a warning.
For the most part, I think this is the right thing to do.
My biggest regret is that the warning is only during `package`/`publish` as it will be too late to act on it and people who want to know will want to know when the problem is introduced.
The error is also very late in the process but at least its before a non-reversible action has been taken.
Dry-run and `yank` help.

Fixes #13456
Fixes #5806

### How should we test and review this PR?

Tests are added in the first commit and you can then follow the commits to see how the test output evolved.

The biggest risk factors for this change are
- If the target-stripping logic mis-identifies a path as excluded because of innocuous path differences (e.g. case)
- Setting a minimum MSRV for published packages: `auto*` were added in 1.27 (#5335) but were insta-stable.  `autobins = false` did nothing until 1.32 (#6329).  I have not checked to see how this behaves pre-1.32  or pre-1.27.  Since my memory of that error is vague, I believe it will either do a redundant discovery *or* it will implicitly skip discovery

Resolved risks
- #13729 ensured our generated target paths don't have `\` in them
- #13729 ensures the paths are normalize so the list of packaged paths

For case-insensitive filesystems, I added tests to show the original behavior (works locally but will fail when depended on from a case-sensitive filesystem) and tracked how that changed with this PR (on publish warn that those targets are stripped).  We could try to normalize the case but it will also follow symlinks and is likely indicative of larger casing problems that the user had.  Weighing how broken things are now , it didn't seem changing behavior on this would be too big of a deal.

We should do a Call for Testing when this hits nightly to have people to `cargo package` and look for targets exclusion warnings that don't make sense.

### Additional information

This builds on #13701 and the work before it.

By enumerating all targets in `Cargo.toml`, it makes it so rust-lang/crates.io#5882 and rust-lang/crates.io#814 can be implemented without any other filesystem interactions.

A follow up PR is need to make much of a difference in performance because we unconditionally walk the file system just in case `autodiscover != Some(false)` or a target is missing a `path`.

We cannot turn off auto-discovery of libs, so that will always be done for bin-only packages.
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6 participants