how to get external dependencies WORKSPACE file

[hellozmz]

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Description of the problem / feature request:

I want to get the external dependencies WORKSPACE file, how could I do? Please help me.

Feature requests: what underlying problem are you trying to solve with this feature?

transtive dependencies WORKSPACE include some lib in version A, local WORKSPACE include those lib in version B, so I want to find how many libs are in different version.

What operating system are you running Bazel on?

centos

What's the output of bazel info release?

0.18

Have you found anything relevant by searching the web?

#2757

[dslomov]

Transitive workspaces are not supported (yet) - see #2757.
One way to see which versions of external dependencies a project uses is bazel sync command. /cc @aehlig