The linked page explains how to install by hand. I'd like to eliminate the curl|bash. It's tricky to deploy a shell script in a terminal emulator, so it hasn't been done yet. The ability to fix bugs without making users upgrade their client has been invaluable during early beta.

Would it be possible for iTerm to "type" the whole thing in for me? It's already executing a curl, can it do the whole thing through the host?

That's the eventual plan. There are a million niggling details, so I didn't do it yet.

Well, if all I have to do is run the script, I can just import it into my git repo (by submoduling iterm2's git repo, if they have one; if they don't, they need one just for this script), and just call it normally (with a bit of if wrapper to not execute on non-iterm2 terms).

Yes, all you have to do is source the script at https://iterm2.com/misc/${SHELL}_startup.in from your ~/.login, ~/.zshrc, ~/.bash_profile, or ~/.config/fish/config.fish as appropriate. If there's ever a major change you'll get a notification when you log in and you'll need to update it, but that hasn't happened yet.

That works for me.

It would have been nice if the bash line contained a way to compare hashes to verify the script is untouched.(store the hash file on a 3rd party server like s3) Or pgp sign the script in some way.