After upgrading to Sierra and running brew doctor-
Error: Calling Pathname#sha1 is disabled!
Use Pathname#sha256 instead.
/usr/local/Library/Taps/theory/homebrew-sqitch/Formula/sqitch_pg.rb:11:in `<class:SqitchPg>'
Please report this to the theory/sqitch tap!
If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
https://github.com/theory/homebrew-sqitch/issues
After upgrading to Sierra and running
brew doctor
-