Bazel: Regression in 3.4.0 release candidate: no such package '@bazel_tools//third_party/py/gflags'

[mmorearty]

Description of the problem / feature request:

I'm trying out 3.4.0rc2 in our very large repro. I got the following error:

ERROR: /home/vagrant/.cache/bazel/_bazel_vagrant/a1dee352bc213c3de72700c6468c2f6f/external/io_bazel_rules_docker/container/BUILD:40:11: no such package '@bazel_tools//third_party/py/gflags': BUILD file not found in directory 'third_party/py/gflags' of external repository @bazel_tools. Add a BUILD file to a directory to mark it as a package. and referenced by '@io_bazel_rules_docker//container:build_tar_lib'

Bugs: what's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

Unfortunately my repro is very large, and I spent about an hour trying to make a small repro case, with no success. (This is in an area of our codebase that I am not at all familiar with, including the Bazel rules it uses). I'm hoping the error message, plus the fact that it's from io_bazel_rules_docker, helps you narrow this down.

I can give you partial information:

• The version of rules_docker that our codebase uses is https://github.com/bazelbuild/rules_docker/archive/174d7c2f5159c9144e999935e729c2faffc42495.zip

• I tried upgrading our rules_docker to https://github.com/bazelbuild/rules_docker/releases/download/v0.14.3/rules_docker-v0.14.3.tar.gz; that did not help.

What operating system are you running Bazel on?

Ubuntu. Specifically:

$ uname -a
Linux ip-172-31-52-184 4.4.0-1106-aws #117-Ubuntu SMP Wed Apr 8 09:52:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

What's the output of bazel info release?

release 3.4.0rc2

Have you found anything relevant by searching the web?

No.

[Yannic]

gflags has been deleted from Bazel (and @bazel_tools) in https://github.com/bazelbuild/bazel/pull/11564. I believe this should be fixed in rules_docker@HEAD.

[Yannic]

/cc @aiuto

[mmorearty]

Confirmed, thanks. I did then get a different error, but it's an issue in rules_docker, not bazel. (If you're curious, my comment is here)

[aiuto]

It's fixed in rules_docker at head. Someone needs to nudge the to tag a new
release.

On Wed, Jul 8, 2020 at 2:37 PM Mike Morearty [e-mail]
wrote:

Confirmed, thanks. I did then get a different error, but it's an issue in
rules_docker, not bazel. (If you're curious, my comment is here
https://github.com/bazelbuild/rules_docker/pull/1535#issuecomment-655686705
)

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[philwo]

Looks like they did a release just a few hours ago that should fix it: https://github.com/bazelbuild/rules_docker/releases/tag/v0.14.4