cannot tap qgis/qgisdev

[xg1990]

 $ brew tap qgis/qgisdev
==> Tapping qgis/qgisdev
Cloning into '/usr/local/Homebrew/Library/Taps/qgis/homebrew-qgisdev'...
remote: Counting objects: 22, done.
remote: Compressing objects: 100% (16/16), done.
remote: Total 22 (delta 6), reused 7 (delta 3), pack-reused 0
Unpacking objects: 100% (22/22), done.
Error: Invalid formula: /usr/local/Homebrew/Library/Taps/qgis/homebrew-qgisdev/Formula/qgis3-dev.rb
Calling 'depends_on :python3' is disabled!
Use 'depends_on "python"' instead.
/usr/local/Homebrew/Library/Taps/qgis/homebrew-qgisdev/Formula/qgis3-dev.rb:69:in `<class:Qgis3Dev>'
Please report this to the qgis/qgisdev tap!
Or, even better, submit a PR to fix it!
Error: Cannot tap qgis/qgisdev: invalid syntax in tap!

more detail:

$ brew tap qgis/qgisdev --debug
==> Tapping qgis/qgisdev
Cloning into '/usr/local/Homebrew/Library/Taps/qgis/homebrew-qgisdev'...
remote: Counting objects: 22, done.
remote: Compressing objects: 100% (16/16), done.
remote: Total 22 (delta 6), reused 7 (delta 3), pack-reused 0
Unpacking objects: 100% (22/22), done.
/usr/local/Homebrew/Library/Homebrew/brew.rb (Formulary::FromPathLoader): loading /usr/local/Homebrew/Library/Taps/qgis/homebrew-qgisdev/Formula/qgis3-dev.rb
Error: Invalid formula: /usr/local/Homebrew/Library/Taps/qgis/homebrew-qgisdev/Formula/qgis3-dev.rb
Calling 'depends_on :python3' is disabled!
Use 'depends_on "python"' instead.
/usr/local/Homebrew/Library/Taps/qgis/homebrew-qgisdev/Formula/qgis3-dev.rb:69:in `<class:Qgis3Dev>'
Please report this to the qgis/qgisdev tap!
Or, even better, submit a PR to fix it!
Error: Cannot tap qgis/qgisdev: invalid syntax in tap!
/usr/local/Homebrew/Library/Homebrew/tap.rb:270:in `install'
/usr/local/Homebrew/Library/Homebrew/cmd/tap.rb:50:in `tap'
/usr/local/Homebrew/Library/Homebrew/brew.rb:100:in `<main>'

[ozak]

Related to #58.

[Gwang-Jin]

I have the same problem

$ brew tap qgis/qgisdev --debug
==> Tapping qgis/qgisdev
Cloning into '/usr/local/Homebrew/Library/Taps/qgis/homebrew-qgisdev'...
remote: Counting objects: 22, done.
remote: Compressing objects: 100% (16/16), done.
remote: Total 22 (delta 6), reused 7 (delta 3), pack-reused 0
Unpacking objects: 100% (22/22), done.
/usr/local/Homebrew/Library/Homebrew/brew.rb (Formulary::FromPathLoader): loading /usr/local/Homebrew/Library/Taps/qgis/homebrew-qgisdev/Formula/qgis3-dev.rb
Error: Invalid formula: /usr/local/Homebrew/Library/Taps/qgis/homebrew-qgisdev/Formula/qgis3-dev.rb
qgis3-dev: Unsupported special dependency :python3
Error: Cannot tap qgis/qgisdev: invalid syntax in tap!
/usr/local/Homebrew/Library/Homebrew/tap.rb:270:in `install'
/usr/local/Homebrew/Library/Homebrew/cmd/tap.rb:50:in `tap'
/usr/local/Homebrew/Library/Homebrew/brew.rb:87:in `<main>'