Let's try making a gnuradio tap with Qt support. We are starting with Homebrew's formula[1], and merging in some customizations from other formulas, like from Titanous[2] and Metacollin[3].
[1] - https://github.com/Homebrew/homebrew-core/blob/master/Formula/gnuradio.rb [2] - https://github.com/titanous/homebrew-gnuradio/ [3] - https://github.com/metacollin/homebrew-gnuradio