How to remove PyPlot.jl from the distribution of a package that uses it

Specific Domains Visualization
10

O.k., finally found a solution that seems to work and not producing warning messages:

module TestPlot2

using Requires
export myplot

myplot(x,y) = println("... myplot(...) ignored, since PyPlot not available")

function __init__()
    if !Requires.isprecompiling()  
        @eval Main begin
            try
                import PyPlot
            catch
                println("... PyPlot not available (plot commands will be ignored)")
            end
        end
    end
    
    @require PyPlot = "d330b81b-6aea-500a-939a-2ce795aea3ee" begin
        myplot(x,y) = PyPlot.plot(x,y)
    end
end

end