fix: Set MSRV for internal packages #12381

epage · 2023-07-19T14:23:52Z

What does this PR try to resolve?

Correctly communicates the MSRV we support to our users.

For packages that are more generally mean to be used by other people, I've punted on for now (see ehuss' comment on this PR). We'll likely need to figure this out for #12432 though

Additional information

This is prep for a future change which will have us use a fixed rust version for the semver tests with a PR updating them.

rustbot · 2023-07-19T14:23:58Z

r? @ehuss

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bors · 2023-07-19T15:51:48Z

☔ The latest upstream changes (presumably #12380) made this pull request unmergeable. Please resolve the merge conflicts.

weihanglo

It is technically true that Cargo-the-library is only guaranteed to be compatible with one corresponding Rust version. And this also gets rid off some burdens we would have on MSRV. However, it is a bit too strict for every crate to stick to the latest stable. Someone may only depends on a tiny part of cargo-the-library but with this MSRV bump that couldn't anymore.

weihanglo · 2023-07-20T10:44:24Z

This is prep for a future change which will have us use a fixed rust version for the semver tests with a PR updating them.

What will this look like? I didn't get the full picture maybe because of missing this?

epage · 2023-07-20T13:57:20Z

Someone may only depends on a tiny part of cargo-the-library but with this MSRV bump that couldn't anymore.

Unless its behind a feature flag or relying on a behavior change, MSRV is all-or-nothing.

epage · 2023-07-20T13:58:29Z

This is prep for a future change which will have us use a fixed rust version for the semver tests with a PR updating them.

What will this look like? I didn't get the full picture maybe because of missing this?

Either one could be done first. Basically, we'd have a similar regex-based PR update so cargo +stable run -p semver-check could be cargo +1.71.0 run -p semver-check

bors · 2023-07-20T23:24:38Z

☔ The latest upstream changes (presumably #12310) made this pull request unmergeable. Please resolve the merge conflicts.

weihanglo · 2023-07-21T14:05:29Z

Some crates like crates-io and home are pretty not directly coupled with cargo, feel like they shouldn't be set with the same MSRV.

(and perhaps cargo-util if we have a firmed definition of what utils are…)

epage · 2023-07-21T16:18:40Z

Some crates like crates-io and home are pretty not directly coupled with cargo, feel like they shouldn't be set with the same MSRV.

The choices I'm aware of

Don't set MSRV and put it in users hands
- Short term: users have to play around to find the version that works
- Long term: with MSRV aware resolver, users will still have to play around to find the version that works
Set to latest
- Might be too high in some cases
- Easy to verify
Set different MSRVs
- To ensure accuracy, we'd need to add MSRV check jobs
- We'd need to hand-manage the list of which packages to verify with which MSRV or write a tool
Manage multiple workspaces, one of the core of cargo and one for more external stuff
-This might be of more interest if we start taking responsibility for Rust APIs for cargo (e.g. build scripts, metadata)

Considering

home is primarily for cargo (nasty cargo fetch #12386) (and cargo-util looks similar)
So far, we've not been looking to take on the maintenance load of clients for our crates (making them more "buyer beware")
We want our process to scale with adding more packages, including CI

To me, it seems like its a choice to no MSRV or latest (until / unless we decide to have multiple workspaces) and setting it would be useful so I would lean towards that.

Thoughts?

weihanglo · 2023-07-21T18:15:49Z

From the point of view of maintenance, I agree on all the points above. However, I believe this will frustrate some people, especially home crate users, though I doubt we will have any significant release they want in any future 😆. Besides, developers of crates depending on cargo or cargo-util should have known they live on the bleeding edge.

That is to say, I think the approach is pretty acceptable. And yes, if cargo-the-library ends up being more modularized, we can explore a more fine-grained MSRV control.

I'd like to do a quick poll before proceeding.

@rfcbot fcp merge

rfcbot · 2023-07-21T18:15:50Z

Team member @weihanglo has proposed to merge this. The next step is review by the rest of the tagged team members:

No concerns currently listed.

Once a majority of reviewers approve (and at most 2 approvals are outstanding), this will enter its final comment period. If you spot a major issue that hasn't been raised at any point in this process, please speak up!

See this document for info about what commands tagged team members can give me.

weihanglo · 2023-07-21T18:17:28Z

BTW, version bump check is somehow broken. See #12347. You may need to manually check if it does need a bump for nightly.

(I'll try fixing that in the next few days)

weihanglo · 2023-08-24T08:10:15Z

.github/renovate.json5

+      ],
+      depNameTemplate: 'latest-msrv',
+      packageNameTemplate: 'rust-lang/rust',
+      datasourceTemplate: 'github-releases',


Just mind that 1.71.1 is not yet in GitHub Release.

weihanglo · 2023-08-24T08:11:05Z

@bors r+

bors · 2023-08-24T08:11:07Z

📌 Commit 87b6e0e has been approved by weihanglo

It is now in the queue for this repository.

bors · 2023-08-24T08:48:40Z

⌛ Testing commit 87b6e0e with merge 8b39dc0...

fix: Set MSRV for internal packages ### What does this PR try to resolve? Correctly communicates the MSRV we support to our users. For packages that are more generally mean to be used by other people, I've punted on for now (see ehuss' comment on this PR). We'll likely need to figure this out for #12432 though ### Additional information This is prep for a future change which will have us use a fixed rust version for the semver tests with a PR updating them.

bors · 2023-08-24T09:39:12Z

☀️ Test successful - checks-actions
Approved by: weihanglo
Pushing 8b39dc0 to master...

bors · 2023-08-24T09:39:15Z

👀 Test was successful, but fast-forwarding failed: 422 Update is not a fast forward

weihanglo · 2023-08-24T10:47:36Z

@bors retry

bors · 2023-08-24T11:01:39Z

⌛ Testing commit 87b6e0e with merge 2a159aa...

bors · 2023-08-24T11:54:38Z

☀️ Test successful - checks-actions
Approved by: weihanglo
Pushing 2a159aa to master...

Update cargo 13 commits in 2cc50bc0b63ad20da193e002ba11d391af0104b7..925280f028db3a322935e040719a0754703947cf 2023-08-22 22:43:08 +0000 to 2023-08-25 21:16:44 +0000 - string leek is stable (rust-lang/cargo#12559) - refactor: Pull out cargo-add MSRV code for reuse (rust-lang/cargo#12553) - Contrib: Add process for security responses. (rust-lang/cargo#12487) - Support dependencies from registries for artifact dependencies, take 2 (rust-lang/cargo#12421) - fix(toml): Improve parse errors (rust-lang/cargo#12556) - Create dedicated unstable flag for asymmetric-token (rust-lang/cargo#12551) - chore(deps): update latest msrv to v1.72.0 (rust-lang/cargo#12549) - changelog: add link to CVE-2023-40030 (rust-lang/cargo#12550) - refactor(install): Move value parsing to clap (rust-lang/cargo#12547) - fix: Set MSRV for internal packages (rust-lang/cargo#12381) - doc: fix two links to tracing docs (rust-lang/cargo#12537) - use AND search when having multiple terms (rust-lang/cargo#12548) - fix(log): Use a more compact relative-time format (rust-lang/cargo#12542) r? ghost

weihanglo · 2023-08-29T23:45:40Z

Just realized, with this pull request and #12395, it is inevitable that every time a Rust release comes out, cargo-util and crates-io will be forced to release a version due to the bump of package.rust-version, even when there is no actual code change involved.

Is that something we've considered? It feels like a bit unnecessary.

Set and verify all MSRVs in CI ### What does this PR try to resolve? Allow us to advertise an MSRV for all public packages, unblocking #12432. Packages are broken down into two MSRV policies - Internal packages: `rust-version=stable` - Public packages: `rust-version=stable-2` To support this - RenovateBot will automatically update all MSRVs - CI will verify all packages build according to their MSRV Since this takes the "single workspace" approach, the downside is that common dependencies are subject to each package's MSRV. We also can't rely on `-Zmsrv-policy` to help us generate a lockfile because it breaks down when trying to support multiple MSRVs in a workspace ### How should we test and review this PR? Per commit ### Additional information #12381 skipped setting some MSRVs because we weren't sure how to handle it. For `cargo-credential`, we needed to do something and did one-off verification (#12623). `cargo-hack` recently gained the ability to automatically select MSRVs for each package allowing us to scale this up to the entire workspace. I don't know if we consciously chose an MSRV policy for `cargo-credential` but it looked like N-2 so that is what I stuck with and propagated out. - Without an aggressive sliding MSRV, we discourage people from using newer features because they will feel like they need permission which means it needs to be justified - Without an aggressive sliding MSRV, if the MSRV at one point in time works for someone, they tend to assume it will always work, leading to frustration at unmet expectations. I switched the MSRV check to `cargo check` from `cargo test` because I didn't want to deal with the out-of-diskspace issues and `check` will catch 99% of MSRV issues. Potential future improvements to `cargo-hack` - Allow `--version-range ..stable` so we can verify all MSRVs that aren't stable which would bypass the diskspace issues and allow us to more easily use `cargo test` again - Verify on a `cargo package` version of a crate (taiki-e/cargo-hack#216)

Pkgsrc changes: * Remove NetBSD-8 support (embedded LLVm requires newer C++ than what is in -8; it's conceivable that this could still build with an external LLVM) * undo powerpc 9.0 file naming tweak, since we no longer support -8. * Remove patch to LLVM for powerpc now included by upstream. * Minor adjustments, checksum changes etc. Upstream changes: Version 1.74.1 (2023-12-07) =========================== - [Resolved spurious STATUS_ACCESS_VIOLATIONs in LLVM] (rust-lang/rust#118464) - [Clarify guarantees for std::mem::discriminant] (rust-lang/rust#118006) - [Fix some subtyping-related regressions] (rust-lang/rust#116415) Version 1.74.0 (2023-11-16) ========================== Language -------- - [Codify that `std::mem::Discriminant<T>` does not depend on any lifetimes in T] (rust-lang/rust#104299) - [Replace `private_in_public` lint with `private_interfaces` and `private_bounds` per RFC 2145] (rust-lang/rust#113126) Read more in [RFC 2145](https://rust-lang.github.io/rfcs/2145-type-privacy.html). - [Allow explicit `#[repr(Rust)]`] (rust-lang/rust#114201) - [closure field capturing: don't depend on alignment of packed fields] (rust-lang/rust#115315) - [Enable MIR-based drop-tracking for `async` blocks] (rust-lang/rust#107421) Compiler -------- - [stabilize combining +bundle and +whole-archive link modifiers] (rust-lang/rust#113301) - [Stabilize `PATH` option for `--print KIND=PATH`] (rust-lang/rust#114183) - [Enable ASAN/LSAN/TSAN for `*-apple-ios-macabi`] (rust-lang/rust#115644) - [Promote loongarch64-unknown-none* to Tier 2] (rust-lang/rust#115368) - [Add `i686-pc-windows-gnullvm` as a tier 3 target] (rust-lang/rust#115687) Libraries --------- - [Implement `From<OwnedFd/Handle>` for ChildStdin/out/err] (rust-lang/rust#98704) - [Implement `From<{&,&mut} [T; N]>` for `Vec<T>` where `T: Clone`] (rust-lang/rust#111278) - [impl Step for IP addresses] (rust-lang/rust#113748) - [Implement `From<[T; N]>` for `Rc<[T]>` and `Arc<[T]>`] (rust-lang/rust#114041) - [`impl TryFrom<char> for u16`] (rust-lang/rust#114065) - [Stabilize `io_error_other` feature] (rust-lang/rust#115453) - [Stabilize the `Saturating` type] (rust-lang/rust#115477) - [Stabilize const_transmute_copy] (rust-lang/rust#115520) Stabilized APIs --------------- - [`core::num::Saturating`] (https://doc.rust-lang.org/stable/std/num/struct.Saturating.html) - [`impl From<io::Stdout> for std::process::Stdio`] (https://doc.rust-lang.org/stable/std/process/struct.Stdio.html#impl-From%3CStdout%3E-for-Stdio) - [`impl From<io::Stderr> for std::process::Stdio`] (https://doc.rust-lang.org/stable/std/process/struct.Stdio.html#impl-From%3CStderr%3E-for-Stdio) - [`impl From<OwnedHandle> for std::process::Child{Stdin, Stdout, Stderr}`] (https://doc.rust-lang.org/stable/std/process/struct.Stdio.html#impl-From%3CStderr%3E-for-Stdio) - [`impl From<OwnedFd> for std::process::Child{Stdin, Stdout, Stderr}`] (https://doc.rust-lang.org/stable/std/process/struct.Stdio.html#impl-From%3CStderr%3E-for-Stdio) - [`std::ffi::OsString::from_encoded_bytes_unchecked`] (https://doc.rust-lang.org/stable/std/ffi/struct.OsString.html#method.from_encoded_bytes_unchecked) - [`std::ffi::OsString::into_encoded_bytes`] (https://doc.rust-lang.org/stable/std/ffi/struct.OsString.html#method.into_encoded_bytes) - [`std::ffi::OsStr::from_encoded_bytes_unchecked`] (https://doc.rust-lang.org/stable/std/ffi/struct.OsStr.html#method.from_encoded_bytes_unchecked) - [`std::ffi::OsStr::as_encoded_bytes`] (https://doc.rust-lang.org/stable/std/ffi/struct.OsStr.html#method.as_encoded_bytes) - [`std::io::Error::other`] (https://doc.rust-lang.org/stable/std/io/struct.Error.html#method.other) - [`impl TryFrom<char> for u16`] (https://doc.rust-lang.org/stable/std/primitive.u16.html#impl-TryFrom%3Cchar%3E-for-u16) - [`impl<T: Clone, const N: usize> From<&[T; N]> for Vec<T>`] (https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#impl-From%3C%26%5BT;+N%5D%3E-for-Vec%3CT,+Global%3E) - [`impl<T: Clone, const N: usize> From<&mut [T; N]> for Vec<T>`] (https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#impl-From%3C%26mut+%5BT;+N%5D%3E-for-Vec%3CT,+Global%3E) - [`impl<T, const N: usize> From<[T; N]> for Arc<[T]>`] (https://doc.rust-lang.org/stable/std/sync/struct.Arc.html#impl-From%3C%5BT;+N%5D%3E-for-Arc%3C%5BT%5D,+Global%3E) - [`impl<T, const N: usize> From<[T; N]> for Rc<[T]>`] (https://doc.rust-lang.org/stable/std/rc/struct.Rc.html#impl-From%3C%5BT;+N%5D%3E-for-Rc%3C%5BT%5D,+Global%3E) These APIs are now stable in const contexts: - [`core::mem::transmute_copy`] (https://doc.rust-lang.org/beta/std/mem/fn.transmute_copy.html) - [`str::is_ascii`] (https://doc.rust-lang.org/beta/std/primitive.str.html#method.is_ascii) - [`[u8]::is_ascii`] (https://doc.rust-lang.org/beta/std/primitive.slice.html#method.is_ascii) Cargo ----- - [fix: Set MSRV for internal packages] (rust-lang/cargo#12381) - [config: merge lists in precedence order] (rust-lang/cargo#12515) - [fix(update): Clarify meaning of --aggressive as --recursive] (rust-lang/cargo#12544) - [fix(update): Make `-p` more convenient by being positional] (rust-lang/cargo#12545) - [feat(help): Add styling to help output ] (rust-lang/cargo#12578) - [feat(pkgid): Allow incomplete versions when unambigious] (rust-lang/cargo#12614) - [feat: stabilize credential-process and registry-auth] (rust-lang/cargo#12649) - [feat(cli): Add '-n' to dry-run] (rust-lang/cargo#12660) - [Add support for `target.'cfg(..)'.linker`] (rust-lang/cargo#12535) - [Stabilize `--keep-going`] (rust-lang/cargo#12568) - [feat: Stabilize lints] (rust-lang/cargo#12648) Rustdoc ------- - [Add warning block support in rustdoc] (rust-lang/rust#106561) - [Accept additional user-defined syntax classes in fenced code blocks] (rust-lang/rust#110800) - [rustdoc-search: add support for type parameters] (rust-lang/rust#112725) - [rustdoc: show inner enum and struct in type definition for concrete type] (rust-lang/rust#114855) Compatibility Notes ------------------- - [Raise minimum supported Apple OS versions] (rust-lang/rust#104385) - [make Cell::swap panic if the Cells partially overlap] (rust-lang/rust#114795) - [Reject invalid crate names in `--extern`] (rust-lang/rust#116001) - [Don't resolve generic impls that may be shadowed by dyn built-in impls] (rust-lang/rust#114941) Internal Changes ---------------- These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. None this cycle.

rustbot assigned ehuss Jul 19, 2023

epage force-pushed the msrv branch 2 times, most recently from b7e2473 to 4284fa2 Compare July 19, 2023 15:06

epage force-pushed the msrv branch from 4284fa2 to 0b36b15 Compare July 19, 2023 15:52

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epage mentioned this pull request Aug 1, 2023

Official API for reading cargo env variables #12431

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Tracking Issue for credential-process RFC 2730 #8933

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epage force-pushed the msrv branch 3 times, most recently from 3fd7ee0 to 87b6e0e Compare August 23, 2023 19:10

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Support dependencies from registries for artifact dependencies, take 2 #12421

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Update cargo rust-lang/rust#115243

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Support stable-X as a version descriptor rust-lang/rustup#2291

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Set and verify all MSRVs in CI #12654

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RFC: Make Cargo respect minimum supported Rust version (MSRV) when selecting dependencies rust-lang/rfcs#3537

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home: reduce MSRV to 1.64 #13270

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fix: Set MSRV for internal packages #12381

fix: Set MSRV for internal packages #12381

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fix: Set MSRV for internal packages #12381

fix: Set MSRV for internal packages #12381

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What does this PR try to resolve?

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