Mac pkg install on a non-dev system asks to install "command line developer tools"

[akenmorris]

This is with 6.2rc6

[akenmorris]

It's this line:

pip install pyyaml==5.3.1

From what I can gather from reading this:

yaml/pyyaml#126

It appears that the install for pyyaml attempts to compile some cython stuff and if it fails it has a fallback option.

Our notes indicate that this is only needed for mkdocs, so we should only install this if it's a dev environment.

[akenmorris]

Next one:

pip install mkdocs-jupyter

This invokes git which also brings up the popup.

[akenmorris]

Fixed in #1571