go/vcs: ignore "mod" VCS type

golang.org/x/tools/go/vcs is significantly behind the upstream
cmd/go/internal/get code, and has no support for modules. It continues
to implement mechanics for GOPATH mode only.

This change is a minimal fix to get it to continue to work
in the presence of the module mode-only "mod" VCS type
(documented at https://golang.org/cmd/go/#hdr-Remote_import_paths)
by effectively implementing IgnoreMod ModuleMode behavior.

It is similar to issue golang/go#24751 and a small subset of CL 109340
that fixed it.

This helps with module adoption by reducing the harm of adding the
"mod" VCS type for vanity import paths, something that was meant to
be backwards compatible.

While here, also backport CL 14482 (the Token to RawToken change).

Fixes golang/go#31845
Updates golang/go#24751

Change-Id: I0852f52cb9bda56879f923337c7f361df8412845
Reviewed-on: https://go-review.googlesource.com/c/tools/+/175219
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2 files changed
tree: d63ecb1d4610d6b38a570d24b0984fdf67e1bd5b
  1. benchmark/
  2. blog/
  3. cmd/
  4. container/
  5. cover/
  6. go/
  7. godoc/
  8. imports/
  9. internal/
  10. playground/
  11. present/
  12. refactor/
  13. .gitattributes
  14. .gitignore
  15. AUTHORS
  16. codereview.cfg
  17. CONTRIBUTING.md
  18. CONTRIBUTORS
  19. go.mod
  20. go.sum
  21. LICENSE
  22. PATENTS
  23. 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.

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.