[BUG] Bootstrap script fails to run in zsh

[hare-siterwell]

Reproduction steps

1. Open zsh shell.
2. After executing . ./scripts/bootstrap.sh, return _install_additional_pip_requirements:read:19: bad option: -a.

Bug prevalence

always

GitHub hash of the SDK that was being used

9a5b909

Platform

other

Platform Version(s)

No response

Anything else?

No response

[bzbarsky-apple]

Presumably fallout from #27267 ?

[andy31415]

I never tried to use zsh ... I had assumed we just use bash everywhere as our only supported shell.

[bzbarsky-apple]

zsh is the default shell on any somewhat recent mac. So if we expect people to be able to bootstrap on Mac, it probably needs to work in zsh or give a much clearer and earlier error.

https://stackoverflow.com/questions/36453146/why-does-read-a-fail-in-zsh seems relevant....

[bzbarsky-apple]

The silly part is that what needs to be sourced is the activate part, not the bootstrap part. So maybe we could move the bootstrap bits out into a script that does actually run via bash?

[andy31415]

ZSH should also have a way to say "split out comma separated string". Looking to see what we can do.

[bzbarsky-apple]

See the stackoverflow above. You can read -r -A in zsh...