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fix(resolver): Make resolver behavior independent of package order #12602

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merged 2 commits into from
Sep 5, 2023

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@epage epage commented Aug 30, 2023

This address one of the problems mentioned in #12599

The intent behind the path_pkg check is to make sure we update
workspace members in the lockfile if their version number changed.
In this case, we don't need to recursively walk, because the change
doesn't affect dependencies. However, we also shouldn't prevent
recursive walks which is what we are doing today, both for packages
marked to keep and for packages that have been "poisoned". So we fix
this by moving that call after all recursive adds are complete so as to
not interfere with them.

This should not affect Cargo.lock at rest, so no upgrade compatibility concerns.

This just allows more packages to be considered available to change which can prevent unclear failures.

The main case I can think of that this does something "undesirable" is when wanting to prevent another "bug" from manifesting: the updating of git dependencies when updating workspace members (#12599). I think I'm ok with that as that needs to be looked into separately.

This addresses the ordering issue of for one of the problems from rust-lang#12599.

The intent behind the `path_pkg` check is to make sure we update
workspace members in the lockfile if their version number changed.
In this case, we don't need to recursively walk, because the change
doesn't affect dependencies.  However, we also shouldn't *prevent*
recursive walks which is what we are doing today, both for packages
marked to keep and for packages that have been "poisoned".  So we fix
this by moving that call after all recursive adds are complete so as to
not interfere with them.
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epage commented Aug 30, 2023

r? @Eh2406

@rustbot rustbot added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Aug 30, 2023
@epage epage changed the title fix(resolver): Make resolver behavior independent or package order fix(resolver): Make resolver behavior independent of package order Aug 30, 2023
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Eh2406 commented Aug 31, 2023

It's always a little disturbing when you can remove a line of code and the tests still pass. Especially when it's documented to fix a known bug.

It is in the pile of hacks for lockfiles. I will need to load this code back into my had before I can be shore this is good.

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epage commented Aug 31, 2023

It's always a little disturbing when you can remove a line of code and the tests still pass. Especially when it's documented to fix a known bug.

Except this doesn't remove any code, it just ones style of processing before the other. It does concern me a little bit but less than trying to fix the other issue in #12599. In that one, it is removal of a line or two and that does cause tests to fail.

@epage epage force-pushed the resolver branch 2 times, most recently from d9f1e05 to 874b4dd Compare August 31, 2023 21:50
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epage commented Aug 31, 2023

@rfcbot ready

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Eh2406 commented Sep 5, 2023

🤞

@bors r+

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bors commented Sep 5, 2023

📌 Commit 0af2f65 has been approved by Eh2406

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 Sep 5, 2023
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bors commented Sep 5, 2023

⌛ Testing commit 0af2f65 with merge d14c85f...

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bors commented Sep 5, 2023

☀️ Test successful - checks-actions
Approved by: Eh2406
Pushing d14c85f to master...

@bors bors merged commit d14c85f into rust-lang:master Sep 5, 2023
18 checks passed
@epage epage deleted the resolver branch September 6, 2023 00:11
bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 6, 2023
Update cargo

21 commits in 96fe1c9e1aecd8f57063e3753969bb6418fd2fd5..d14c85f4e6e7671673b1a1bc87231ff7164761e1
2023-08-29 20:10:34 +0000 to 2023-09-05 22:28:10 +0000
- fix(resolver): Make resolver behavior independent of package order (rust-lang/cargo#12602)
- cargo-credential: change serialization of cache expiration (rust-lang/cargo#12622)
- Update registry-web-api.md yank/unyank comments (rust-lang/cargo#12619)
- test: new options of debuginfo are no longer unstable (rust-lang/cargo#12618)
- use split_once for cleaner code (rust-lang/cargo#12615)
- stop using lazy_static (rust-lang/cargo#12616)
- doc: adjust all doc headings one level up (rust-lang/cargo#12595)
- chore(deps): update compatible (rust-lang/cargo#12609)
- chore(deps): update rust crate cargo_metadata to 0.17.0 (rust-lang/cargo#12610)
- Prepare for partial-version package specs (rust-lang/cargo#12591)
- refactor: Use more serde_untagged (rust-lang/cargo#12581)
- fix(cli): Help users know possible `--target` values (rust-lang/cargo#12607)
- Tab completion for --target uses rustup but fallsback to rustc (rust-lang/cargo#12606)
- Fewer temporary needless strings (rust-lang/cargo#12604)
- fix(help): Provide better commands heading for styling (rust-lang/cargo#12593)
- fix(update): Clarify meaning of --aggressive as --recursive (rust-lang/cargo#12544)
- docs(changelog): Clarify language for Cargo.lock policy (rust-lang/cargo#12601)
- fix typo: "default branch branch" -> "default branch" (rust-lang/cargo#12598)
- fix: add error for unsupported credential provider version (rust-lang/cargo#12590)
- fix(help): Explain --explain (rust-lang/cargo#12592)
- fix(help): Remove redundant information from new/init (rust-lang/cargo#12594)

r? ghost
@ehuss ehuss added this to the 1.74.0 milestone Sep 30, 2023
epage added a commit to epage/cargo that referenced this pull request Nov 14, 2023
Before, when running `cargo update <member>`, we'd not reuse the
previous resolve result and when the resolver started walking into the
dependencies, it would do a git fetch.

Now, we won't even try to resolve the workspace members and so we won't
look at those dependencies and do git fetch.

This will make `cargo update <workspace-member>`
match `cargo update --workspace`.
I considered whether there were other ways of handling this but I
figured aiming for consistency in approaches was the best way.
We can investigate improving those approaches separately.

There are other discrepancies in the different code paths (handling of
patches, adding sources) but I'm deferring looking over those.

Between this and rust-lang#12602, this should finnally resolve rust-lang#12599.

Fixes rust-lang#12599
epage added a commit to epage/cargo that referenced this pull request Nov 14, 2023
Before, when running `cargo update <member>`, we'd not reuse the
previous resolve result and when the resolver started walking into the
dependencies, it would do a git fetch.

Now, we won't even try to resolve the workspace members and so we won't
look at those dependencies and do git fetch.

This will make `cargo update <workspace-member>`
match `cargo update --workspace`.
I considered whether there were other ways of handling this but I
figured aiming for consistency in approaches was the best way.
We can investigate improving those approaches separately.

There are other discrepancies in the different code paths (handling of
patches, adding sources) but I'm deferring looking over those.

Between this and rust-lang#12602, this should finnally resolve rust-lang#12599.

Fixes rust-lang#12599
epage added a commit to epage/cargo that referenced this pull request Nov 17, 2023
Before, when running `cargo update <member>`, we'd not reuse the
previous resolve result and when the resolver started walking into the
dependencies, it would do a git fetch.

Now, we won't even try to resolve the workspace members and so we won't
look at those dependencies and do git fetch.

This will make `cargo update <workspace-member>`
match `cargo update --workspace`.
I considered whether there were other ways of handling this but I
figured aiming for consistency in approaches was the best way.
We can investigate improving those approaches separately.

There are other discrepancies in the different code paths (handling of
patches, adding sources) but I'm deferring looking over those.

Between this and rust-lang#12602, this should finnally resolve rust-lang#12599.

Fixes rust-lang#12599
epage added a commit to epage/cargo that referenced this pull request Nov 17, 2023
Before, when running `cargo update <member>`, we'd not reuse the
previous resolve result and when the resolver started walking into the
dependencies, it would do a git fetch.

Now, we won't even try to resolve the workspace members and so we won't
look at those dependencies and do git fetch.

This will make `cargo update <workspace-member>`
match `cargo update --workspace`.
I considered whether there were other ways of handling this but I
figured aiming for consistency in approaches was the best way.
We can investigate improving those approaches separately.

There are other discrepancies in the different code paths (handling of
patches, adding sources) but I'm deferring looking over those.

Between this and rust-lang#12602, this should finnally resolve rust-lang#12599.

Fixes rust-lang#12599
bors added a commit that referenced this pull request Nov 18, 2023
fix(resolver): Don't do git fetches when updating workspace members

### What does this PR try to resolve?

Before, when running `cargo update <member>`, we'd not reuse the
previous resolve result and when the resolver started walking into the
dependencies, it would do a git fetch.

Now, we won't even try to resolve the workspace members and so we won't
look at those dependencies and do git fetch.

This will make `cargo update <workspace-member>`
match `cargo update --workspace`.

Fixes #12599
Fixes #8821

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

I considered whether there were other ways of handling this but I
figured aiming for consistency in approaches was the best way.
We can investigate improving those approaches separately.

There are other discrepancies in the different code paths (handling of
patches, adding sources) but I'm deferring looking over those.

I added a test to demonstrate the `--workspace` behavior to use as a base line to compare with.

### Additional information

Between this and #12602, this should finally resolve #12599.
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5 participants