add blacklist for reserved gem names

[dwradcliffe]

I started with the list from that issue. Are there any other names we want to add to the list?

Fixes: #1155

review: @indirect @qrush @sferik @arthurnn

[sferik]

👍

[qrush]

May I also suggest:

• rbconfig
• rubygems
• ubygems 😒
• unicode_normalize
• tk
• win32ole

Pulled a few of these from some greps of lib in ruby trunk.

Also need to #destroy any of these that exist, could use a little task for that. (Do any exist already beyond openssl? We should notify those gem authors if so!) Or could just do it console after deploy, your call!

[dwradcliffe]

Added a few more. I'm going to ship this as is and we can remove the existing gems in a second PR.

[arthurnn]

👍

[ajb]

Looks like this is the cause of rubygems/rubygems#1474.

I understand the impetus behind this PR, but as a gem maintainer, it would have been nice to have a heads-up. We're aware that Sync is already a module in the stdlib, but nobody has been able to dedicate the effort to renaming the gem.

we can remove the existing gems in a second PR.

This obviously hasn't happened yet... but are there any details on what this will look like? Will folks' deployments start breaking suddenly?

[arthurnn]

@ajb thanks for letting us know about the issue. I will talk to the team and get back to you with a solution.
Sorry about that