While this is unlikely to be implemented in the case of emscripten-wasm32 platform (cannot install from a source distribution in a straightforward way in JS), there is no reason to not support to resolve packages for other platforms (Linux, OSX, Windows).

e.g. having git+https://github.com/dateutil/dateutil@9eaa5de584f9f374c6e4943069925cc53522ad61 in the environment.yml in the pip packages list should be possible.

The implementation should hit the Github APIs to resolve following information:

• package name
• package version
• dependencies