internal/lsp, go/packages: reproduce and fix golang/go#39646

This test exposes a lot of fundamental issues with `go list` overlays.
Now that we have the regression test framework, we can copy it over and
make any flakes completely reproducible by waiting for each change to
complete.

The issue here ended up being that initial workspace load returns
workspace packages with no associated files due to golang/go#39986.
Working around this allows invalidation to proceed as usual.

In the process of debugging this, I also noticed that packages can get
loaded as command-line-arguments even when we can get the correct
package path for them. It's pretty complicated to fix this, so
restructured the code a tiny bit and left a TODO. I'd like to come back
to this at some point, but it's not pressing since I was able to fix
this bug.

Fixes golang/go#39646.
Updates golang/go#39986.

Change-Id: Id6b08a5e92d28eddc731feb0ef3fd3b3fc69e64b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/240098
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
4 files changed
tree: 449b31ee28105a0fd523ff227d3140bf4efa9bc5
  1. benchmark/
  2. blog/
  3. cmd/
  4. container/
  5. cover/
  6. go/
  7. godoc/
  8. gopls/
  9. imports/
  10. internal/
  11. playground/
  12. present/
  13. refactor/
  14. txtar/
  15. .gitattributes
  16. .gitignore
  17. .prettierrc
  18. AUTHORS
  19. codereview.cfg
  20. CONTRIBUTING.md
  21. CONTRIBUTORS
  22. go.mod
  23. go.sum
  24. LICENSE
  25. PATENTS
  26. README.md
README.md

Go Tools

This subrepository holds the source for various packages and tools that support the Go programming language.

Some of the tools, godoc and vet for example, are included in binary Go distributions.

Others, including the Go guru and the test coverage tool, can be fetched with go get.

Packages include a type-checker for Go and an implementation of the Static Single Assignment form (SSA) representation for Go programs.

Download/Install

The easiest way to install is to run go get -u golang.org/x/tools/.... You can also manually git clone the repository to $GOPATH/src/golang.org/x/tools.

JS/CSS Formatting

This repository uses prettier to format JS and CSS files.

The version of prettier used is 1.18.2.

It is encouraged that all JS and CSS code be run through this before submitting a change. However, it is not a strict requirement enforced by CI.

Report Issues / Send Patches

This repository uses Gerrit for code changes. To learn how to submit changes to this repository, see https://golang.org/doc/contribute.html.

The main issue tracker for the tools repository is located at https://github.com/golang/go/issues. Prefix your issue with “x/tools/(your subdir):” in the subject line, so it is easy to find.