Did you configure PyCall.jl to use Conda, e.g. by setting the environemnt variable PYHTON=""? That’s something I needed to do for some of my packages, e.g. https://github.com/ranocha/BSeries.jl/blob/d0db96175376c20b31d982565501ef3b592b7ebf/.github/workflows/CI.yml#L31
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