How to add a package in Julia

Question

While adding a new package I get the following error on Julia.

julia> Pkg.add("IJulia")
 Resolving package versions...
ERROR: SystemError: opening file C:\Users\ARPAN\.juliapro\JuliaPro_v1.0.3.1\registries\JuliaPro\C\Co
lor\Versions.toml: No such file or directory

Can anyone help?

`Color` should be `Colors` perhaps? – daycaster Mar 23 '20 at 22:33 — daycaster, Mar 23 '20 at 22:33

score 3 · Answer 1 · edited Mar 23 '20 at 20:24

This path looks to be missing \ in the middle. Should be ...\ARPAN\.juliapro\....

One option is to set the environment variable JULIA_DEPOT_PATH (executed at the command line):

set JULIA_DEPOT_PATH=C:\Users\ARPAN\.juliapro\JuliaPro_v1.0.3.1

julia

And now once Julia is started install the packages. You can check that the above path is correct by running versioninfo() from Julia.

The question is why it did not work in the first place. Most likely you have wrongly set one of JULIA_* environment variables. For a complete list see https://docs.julialang.org/en/v1/manual/environment-variables/index.html.

How to add a package in Julia

1 Answers1