via pyimport_conda

Project:

• https://github.com/mkoeppe/SageMath.jl

References:

• https://julialang.github.io/Pkg.jl/v1/creating-packages/
• https://github.com/JuliaPy/PyCall.jl

CC: @isuruf @saraedum

Component: porting

Issue created by migration from https://trac.sagemath.org/ticket/31350