[micromamba] allow pip in env.yml files

[wolfv]

We should also add support for pip in environment yml files. cc @ocefpaf

More generally, we could think about supporting arbitrary other package managers.

We could have a format where people can add a templated command line that will be used to install packages from keys, e.g.

cmds:
- pip: "pip install {pkg_name}"
- npm: "npm install {pkg_name}"
- apt: "apt install {pkg_name}"
dependencies:
- bla
- bli
- pip:
  - matplotlib
  - something
- apt:
  - kernel-headers

We might also want to have an installation order, so maybe evaluate the installers at the place where they appear in the dependencies list.

Also something that came up for conda's env.yml files is support for selectors for different OS, for example. In conda this is done with the # selector syntax, which I dislike because it's actually a comment. In boa we're currently working with the proposal to use a syntax like - sel(win): win32deps, which we could re-use here. This would also be a good opportunity to implement the selector logic in C++ so that we have it available whenever we switch to a native boa :)

[majidaldo]

We should also add support for pip in environment yml files. cc @ocefpaf

More generally, we could think about supporting arbitrary other package managers.

We could have a format where people can add a templated command line that will be used to install packages from keys, e.g.

cmds:
- pip: "pip install {pkg_name}"
- npm: "npm install {pkg_name}"
- apt: "apt install {pkg_name}"
dependencies:
- bla
- bli
- pip:
  - matplotlib
  - something
- apt:
  - kernel-headers

We might also want to have an installation order, so maybe evaluate the installers at the place where they appear in the dependencies list.

Also something that came up for conda's env.yml files is support for selectors for different OS, for example. In conda this is done with the # selector syntax, which I dislike because it's actually a comment. In boa we're currently working with the proposal to use a syntax like - sel(win): win32deps, which we could re-use here. This would also be a good opportunity to implement the selector logic in C++ so that we have it available whenever we switch to a native boa :)

I really think figuring out how an environment.yml looks like is a community issue. I've been a fan of conda devenv.

[wolfv]

We've got pip support in micromamba now, and people are using it.