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What type of PR is this?
Feature
What package or component does this PR mostly affect?
go_repository
What does this PR do? Why is it needed?
The URLs that
go_repository
downloads libraries from may need authentication. We need to support the authentication tokens saved in.netrc
similar to whathttp_archive
does.** Which issues(s) does this PR fix?
Fixes #847
** Other notes for review
This is a re-implementation of #848 by addressing @jayconrod's comments there. Besides fixes in the code, these are the responses to Jay's comments:
Bazel 1.2.0 provides these functions (read_netrc, use_netrc): https://github.com/bazelbuild/bazel/blob/1.2.0/tools/build_defs/repo/utils.bzl. However, the third argument to use_netrc was added in Bazel 3.1. So this pull request will require Bazel 3.1, which shouldn't be a big issue as rules_go already requires Bazel 4.0
In module mode, go_repository calls Go toolchain, which already has logic to support netrc without requiring
NETRC
environment variable.Let's not add these attributes to keep it simple and use the netrc file from default location with default auth pattern for now until some people run into a scenario where customization is needed.