just upgrade to 1.3 from 1.1.1, I did an “update” under Pkg, but nothing happened though I had quite many packages installed under 1.1 (and I have not been up to date for a few months). “status” doesn’t show any existing packages. I had to “add” individual packages, which seemed to work and updated. Also, “gc” doesn’t do anything though all the old packages had various builds.
Different Julia versions uses different package environments. You can copy
~/.julia/environments/v1.1 to a new folder
~/.julia/environments/v1.3 if you want to see the same packages.
Or, alternatively, rename the last one to eg
~/.julia/environments/v1 and symlink all the others to that.