Terraform pleasings incompatible with bash < 4.4

[cowfoodbagman]

Pre Bash 4.4 empty array variables are treated as unset. Bash 4.4 changed the behavior:
https://stackoverflow.com/questions/7577052/bash-empty-array-expansion-with-set-u

Current error when running with empty arrays: line 84: deps[@]: unbound variable

[peterebden]

Is this a major concern? Bash 4.4 was released in 2016, it seems reasonable to expect systems to have upgraded by now.

[cowfoodbagman]

Apparently Amazon didn't get the memo: https://repost.aws/questions/QUz95NYf4bQxyJHwf1RKJ3Iw/process-substitution-not-working-with-linux-2-bash
We use their image for builds.

[andrewkruse]

The default mac set up also did not get the memo. I unfortunately don't have the understanding of what please is doing to work around it using a python script and would love to be able to prototype some stuff using please.

bash --version
GNU bash, version 3.2.57(1)-release (x86_64-apple-darwin21)
Copyright (C) 2007 Free Software Foundation, Inc.