What does conda do when “solving environment”

Question

Whenever I run conda install/remove/update , it tells me it\'s \"Solving environment\" for some time before telling me the list of things it\'s going

Answer 1

conda install --prune <> helped me to install the right channel.

Suspecting environment used are for zipline and channel used not compatible with existing one. prune takes a lot of time but helped me in solving the environment issues.