Installing and working with JuliaLang NOT from conda

[valeriupredoi]

This is an issue stemmed from #1180 and details how to install and work with Julia and not use the conda-forge installation since that one is dead now (installing it from conda results in a ton of issues, try it yourself!). So, non-conda julia install:

wget https://julialang-s3.julialang.org/bin/linux/x64/1.0/julia-1.0.3-linux-x86_64.tar.gz
tar xfz julia-*-linux-x86_64.tar.gz
ln -s $PWD/julia-*/bin/julia $HOME/$ANACONDA/envs/esmvaltool/bin
which julia
julia --help
julia esmvaltool/install/Julia/setup.jl

softlinking Julia to the $ANACONDA bin is important so that the diagnostic picks up the executable; $ANACONDA is just your anaconda3 repo

If you are behind a firewall (like on Jasmin) you will see something like:

(esmvaltool) [valeriu@jasmin-sci2 esmvaltool]$ julia esmvaltool/install/Julia/setup.jl 
┌ Info: Installing the packages from
└   scriptDir * "/julia_requirements.txt" = "/home/users/valeriu/esmvaltool/esmvaltool/install/Julia/julia_requirements.txt"
┌ Info: Installing
└   pkgName = "ArgParse"
   Cloning default registries into /home/users/valeriu/.julia/registries
   Cloning registry General from "https://github.com/JuliaRegistries/General.git"
ERROR: LoadError: failed to clone from https://github.com/JuliaRegistries/General.git, error: GitError(Code:ERROR, Class:OS, failed to truncate pack file '/home/users/valeriu/.julia/registries/General/.git/objects/pack/pack_git2_COqrfy': Permission denied)
Stacktrace:
 [1] pkgerror(::String) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.0/Pkg/src/Types.jl:120
 [2] #clone#2(::String, ::Base.Iterators.Pairs{Symbol,LibGit2.CachedCredentials,Tuple{Symbol},NamedTuple{(:credentials,),Tuple{LibGit2.CachedCredentials}}}, ::Function, ::String, ::String) at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.0/Pkg/src/GitTools.jl:107
 [3] #clone at ./none:0 [inlined]
...blah blah...

that is easily fixable by shoving in the General index via a simple git clone:

git clone https://github.com/JuliaRegistries/General.git ~/.julia/registries/General

and then repeating the installation of the required packages.

We need this info in the documentation...

[valeriupredoi]

edited the documentation in #1259

[valeriupredoi]

closed by merging #1259