Bump golang.org/x/tools from 0.8.0 to 0.20.0

[dependabot]

Bumps golang.org/x/tools from 0.8.0 to 0.20.0.

Release notes

Sourced from golang.org/x/tools's releases.

gopls/v0.15.2

This release fixes the following regressions in gopls@v0.15.0+.

• golang/go#66109: a crash when encountering a test file excluded via build tags, which also contained an invalid import of a main package. This could occur in a tools_test.go file implementing the common pattern for tool dependencies.
• golang/go#66145: spurious import errors in multi-root workspaces. In some scenarios, the new zero-config logic added in gopls@v0.15.0 resulted in inaccurate errors about missing imports. This could occur when module A has a local replace of module B, and A and B are open as a separate workspace folders.
• golang/go#66195: a crash when working on modules with a go directive of the form go a.b.c, when gopls was compiled with Go 1.20 or earlier.
• golang/go#66090: a crash when SignatureHelp is cancelled (found via telemetry)
• golang/go#66250: a crash in references when one of the package files is missing a package declaration (found via telemetry)

These last two crashes are worth highlighting. Both were found via the (off by default) automated crash reporting added in gopls@v0.15.0. Both were unlikely to get reported via GitHub issues, because they won't happen frequently enough for most LSP clients to notify the user. This is a perfect example of how telemetry can help us deliver a more reliable product than would be possible without automated reporting.

gopls/v0.15.1

This release fixes golang/go#65952, a crash in document highlighting when the cursor is in a return value for a function that has no results, such as the following example:

func f() { // <-- no results
   return 0| // <-- cursor at '|'
}

Thanks very much to @​patrickpichler who both reported and fixed this bug!

We're hopeful that once Go 1.23 is released, the opt-in automated crash reporting added in gopls v0.15.0 will increase the likelihood that these types of crashes are caught before they are released.

gopls/v0.15.0

These release notes are mostly identical to the v0.15.0-pre.3 prerelease notes. Thanks to all who tested the prerelease!

go install golang.org/x/tools/gopls@v0.15.0

This release introduces "zero config" gopls workspaces, which is a set of heuristics allowing gopls to Do The Right Thing when you open a Go file. We believe this addresses two of the largest pain points we hear about from our users: difficulty configuring multi-module repositories, and working on multiple GOOS/GOARCH combinations. However, this is a large change to the way gopls models your workspace, and the dynamic loading/unloading of builds may be surprising in some cases. Your feedback on this new feature is greatly appreciated. See below for more details.

New Features

Simpler workspace configuration and improved build tag support

The headline feature of this release is a rewrite of gopls's logic for associating files with build configurations that enables gopls to give accurate answers when navigating almost any Go source file on your machine.

Most features of gopls rely on type information, which comes not from the file in isolation but depends on the relationship between the file and the other files in its package, and between the package and all its dependencies; this in turn depends on go.mod and go.work files. In effect, gopls needs to decide which go build command--which working directory, package arguments, GOOS, GOARCH, build tags, and so on--would cause each file to be processed by the compiler.

Previous versions of gopls only allowed one build per workspace folder, and users had to be careful to configure the right workspace root and build environment. As a result, users often encountered confusing error messages when they opened the wrong directory, or a file that was tagged for a different operating system or architecture--the dreaded "No packages found" error. This situation was improved by the introduction of go.work files, but still required configuration and a preexisting understanding of the code being edited.

With this release, gopls now allows multiple builds per workspace, and uses heuristics to automatically derive the set of active builds. Gopls will ensure that an active build contains every module with an open file in your workspace, adding new builds and GOOS/GOARCH combinations as needed to cover files that don't match the host operating system or architecture.

For example, suppose we had a repository with three modules: moda, modb, and modc, and a go.work file using modules moda and modb. If we open the files moda/a.go, modb/b.go, moda/a_windows.go, and modc/c.go, gopls will automatically create three builds:

This allows gopls to just work when you open a Go file, but it does come with several caveats:

... (truncated)

Commits

• 11c692e gopls/internal/test/marker/testdata: skip hover size tests on 32-bit arm
• fc660e5 go.mod: update golang.org/x dependencies
• 6590f47 internal/gcimporter: renable tests of issue50259.go
• f1d5252 gopls/internal/golang: Hover: show wasted % of struct space
• 951bb40 gopls/internal/test/integration/misc: fix flaky test
• c9b0c65 gopls/internal/analysis/fillreturns: skip test if gotypesalias=1
• c623a28 gopls/internal/cache: fix crash in snapshot.Analyze with patch versions
• f345449 gopls/internal/server: filter diagnostics to "best" views
• 42d590c gopls/internal/test/integration: add a WriteGoSum run option
• 53d35a5 gopls/internal/golang: RenderPackageDoc: fix doc links
• Additional commits viewable in compare view

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