all: fix tests in preparation for GO111MODULE=on by default

This CL does not fix failures in ./gopls/internal/regtest, which will
be fixed separately.

In refactor/rename.TestDiff, add a go.mod file.

In internal/imports.ProcessEnv.buildContext, set an I/O hook if
GO111MODULE=off in ProcessEnv but not in the current process's

Context allows the user to set GOPATH, GOOS, GOARCH, and a few other
environment variables, but not GO111MODULE. Context.Import may return
different results than packages.Load if the latter is invoked with a
GO111MODULE value that differs from the caller's environment. Setting
an I/O hook forces Import to run in GOPATH mode, not invoking 'go list'.
This is undocumented, but it should be stable while GOPATH is

For golang/go#41330

Change-Id: I5679e8941e32dc95b05c234cb2e3fec5cabebced
Run-TryBot: Jay Conrod <>
Reviewed-by: Heschi Kreinick <>
Reviewed-by: Bryan C. Mills <>
gopls-CI: kokoro <>
TryBot-Result: Go Bot <>
Trust: Jay Conrod <>
2 files changed
tree: 36482984ee949af849e4d87aa5872ab6a75d2126
  1. .gitattributes
  2. .gitignore
  3. .prettierrc
  10. benchmark/
  11. blog/
  12. cmd/
  13. codereview.cfg
  14. container/
  15. cover/
  16. go.mod
  17. go.sum
  18. go/
  19. godoc/
  20. gopls/
  21. imports/
  22. internal/
  23. playground/
  24. present/
  25. refactor/
  26. txtar/

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.


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

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

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