Error: Operation already in progress for protobuf

[mzaiady]

On Mac OSX:10.10.5

$rosdep install --from-paths src --ignore-src --rosdistro indigo -y

executing command [brew install gazebo]
==> Installing gazebo from osrf/homebrew-simulation
Error: Operation already in progress for protobuf
Another active Homebrew process is already using protobuf.
Please wait for it to finish or terminate it to continue.
ERROR: the following rosdeps failed to install
homebrew: command [brew install gazebo] failed

[tdsmith]

Can you file this with the ROS project please?

[tdsmith]

Closing since I see ros-infrastructure/rosdep#406 is open.

This can happen is a tap has a formula that duplicates the name of a formula in core. We can provide some assistance if there are questions.

[wjwwood]

@tdsmith I'd argue that if this can be caused by overlapping the formulae in taps, then the error message is wrong.

[wjwwood]

@mzaiady What happens if you just run brew install gazebo?

[wjwwood]

I just ran brew install gazebo successfully, then I uninstalled it, did brew update and then ran it again and I get the same failure as @mzaiady:

% brew install gazebo
==> Installing gazebo from osrf/homebrew-simulation
Error: Operation already in progress for protobuf
Another active Homebrew process is already using protobuf.
Please wait for it to finish or terminate it to continue.

I'd say this is a new bug in Homebrew, or if this is expected the error message is incorrect.

[tdsmith]

I agree it's not a good error message. Whoever maintains the gazebo formula may need to use a fully-qualified formula name in their depends_on declaration; IIRC the entire dependency tree of a formula may refer to at most one formula with a given short name.

Where can we find this formula?

[wjwwood]

Where can we find this formula?

https://github.com/osrf/homebrew-simulation/blob/master/gazebo.rb

[wjwwood]

@scpeters fyi

[tdsmith]

Okay, I see. This is ultimately a long-standing Homebrew bug but the workaround is to avoid tap formulas with the same name as core formulas. homebrew-julia is an example of an implementation. https://github.com/staticfloat/homebrew-julia/

[tdsmith]

Background reading includes #14089, #17730, Homebrew/homebrew-science#767.

[tdsmith]

Alternatively, if the protobuf fix has been committed upstream by now, we can pull the patch into Homebrew/homebrew.

[scpeters]

I maintain the gazebo formulae and the duplicate protobuf formula is no longer necessary; our error was unrelated to the patch. I just haven't gotten around to deleting it and modifying the gazebo formula accordingly. I'll do so as soon as this discussion is resolved.

I concur that the error message is not very helpful. If it is non-trivial to detect this during install, perhaps an audit rule could be created? The gazebo formula currently passes brew audit --strict.

[brothaman]

Hello I'm currently trying to install the gazebo simulation and im getting the same error

==> Installing gazebo from osrf/homebrew-simulation
Error: Operation already in progress for protobuf
Another active Homebrew process is already using protobuf.
Please wait for it to finish or terminate it to continue.

I've tried brew audit --strict & brew install gazebo --only-dependencies then brew install gazebo and still the same error. Is there a recommended work around or maybe some other formula where this has been been resolved?

[scpeters]

I'm fixing the gazebo formula in osrf/homebrew-simulation#46