Anaconda: Install specific packages from specific channels using environment.yml

Question

does anyone know how to construct an Anaconda environment.yml file so that it installs specific packages from specific channels?

Something like this:

Answer 1

I saw something like

dependencies:
- chanelname::modulename=X.Y.Z

Update It now implemented: https://github.com/conda/conda/issues/7202

Old answer Be carefull since it doesn't seemed to be implemented. A channel is, by design, a "space" where depencies are robust. So removing this might break dependencies.