Use standard python installation machinery rather than rolling your own.

[gimbo]

I was surprised so see a custom install.py rather than the expected setup.py, which has good support for letting the user configure where they want to install to, for example.

See, e.g., the Python Packaging User Guide, this other guide and setuptools

[sbrl]

I was going to open another issue, but this sort-of describes my use-case.

I'd like to scriptably install it using a git submodule in my ~/bin folder, but it doesn't look like the custom install script allows for that.