Channel order should be respected (and maybe also pip dependency order)

[sdvillal]

At the moment everything is sorted alphanumerically in the rendered environment. I think it is not correct:

• channel priorities should be respected
• pip dependencies order should maybe be somewhat respected (since pip is, at the moment and until it gets the promised resolver, sensitive to the order in which we ask for dependencies)

I guess the way to go for includes, at least for channels, would be to have a simple consistency check and fail if two channels are ordered differently in different files.

Thanks for conda-devenv!

[nicoddemus]

Thanks @sdvillal, you are correct, we should not be ordering channel and pip dependencies. 👍