Pkg.instantiate() error


When I start Julia and load packages - e.g. I type using Calculus - I get an error that says it cannot find the package and that I need to use Pkg.instantiate(). After I do that, the package loads. It is annoying as Pkg.instantiate() needs to be run before loading each package.

What does

pkg> st Calculus

print? (you can get the pkg> prompt with ]).

This means that the files of the package has been deleted so we only have a “reference” to it from the Project / Manifest file. In order to actually use the package it needs to be downloaded.

Unless you are deleting the folder where packages gets installed .julia/packages I’m not sure why this would happen.