libvirt is not building on Debian 9.4

[ipatch]

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• [x] are reporting a bug others will be able to reproduce and not asking a question. If you're not sure or want to ask a question do so on our Discourse: https://discourse.brew.sh
• [x] ran a brew command and reproduced the problem with multiple formulae? If it's a problem with a single, official formula (not cask) please file this issue at Linuxbrew/homebrew-core: https://github.com/Linuxbrew/homebrew-core/issues/new. If it's a brew cask problem please file this issue at https://github.com/caskroom/homebrew-cask/issues/new. If it's a tap (e.g. Homebrew/homebrew-php) problem please file this issue at the tap.
• [x] ran brew update and can still reproduce the problem?
• [x] ran brew doctor, fixed all issues and can still reproduce the problem?
• [x] ran brew config and brew doctor and included their output with your issue?

To help us debug your issue please explain:

• What you were trying to do (and why)
  • trying to install libvirt on Debian 9.4
• What happened (include command output)
  • output of brew gist-logs --config --doctor libvirt
• What you expected to happen
  • a successful install of libvirt
• Step-by-step reproduction instructions (by running brew commands)
  • brew install -v libvirt

[sjackman]

configure: error: libnl-devel >= 1.1 is required for macvtap support

https://gist.github.com/ipatch/7d599679346bfa270ec5f7345c2150ea#file-01-configure-L964

[sjackman]

This issue was moved to Linuxbrew/homebrew-core#7673