Pluto imports packages from false if-condition statements

[bvdmitri]

Pluto imports packages in global name space in cases where import is guarded with some condition, mwe:

This behaviour might be wrong, especially if using SomePackage has some side-effects and name conflicts

For example:

if false
    using CairoMakie
else
    using Plots
end

results in

WARNING: both Plots and CairoMakie export "plot"; uses of it in module workspace11 must be qualified

In REPL for example that doesn't happen and it is possible to load packages based on some condition.

[fonsp]

This is too difficult too fix right now :)