How to upgrade Julia to a new release?

Leveraging all the experience built into the code base of rbenv … you could use jlenv.

Install:

  1. jlenv - this installs julia-build by default.

Then install Julia versions:

$ jlenv install v1.1.0

NOTE:
As further versions of Julia are released, the julia-build project gets updated, so you will need to update julia-build, before you can install a new version of julia.

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