brew install fails with "Non-checksummed download of vobsub2srt formula file from an arbitrary URL is unsupported!"

[ghouliesdad]

This is on my MacMini running Mojave:

$ brew install --HEAD https://github.com/ruediger/VobSub2SRT/raw/master/packaging/vobsub2srt.rb 2>&1 | tee -a ~/Homebrew-install.log
brew extract or brew create and brew tap-new to create a formula file in a tap on GitHub instead.: Invalid usage: Non-checksummed download of vobsub2srt formula file from an arbitrary URL is unsupported! (UsageError)
brew extract or brew create and brew tap-new to create a formula file in a tap on GitHub instead.: Invalid usage: Non-checksummed download of vobsub2srt formula file from an arbitrary URL is unsupported! (UsageError)

[varenc]

This is only the first minor issue when building on macOS. For security reasons Homebrew stopped allowing direct Formula references like that. But you can get around that by just referencing it form a local file like this:

$ wget https://github.com/ruediger/VobSub2SRT/raw/master/packaging/vobsub2srt.rb
$ brew install --HEAD ./vobsub2srt.rb

That'll get you past the first Homebrew error, but now you have to deal with the actual build errors described in #81