magit-delta https://github.com/dandavison/magit-delta
For delta, there's magit-delta in MELPA.
For difftastic, there is difftastic package in MELPA, see also https://github.com/pkryger/difftastic.el for instructions.
I second this question.
For difftastic, there is difftastic package in MELPA, see also https://github.com/pkryger/difftastic.el for instructions.
That would be one of the coolest news in weeks!