Set up Julia packages for system

setup-system.jl

# Install packages in system
# ==========================

# License: Public Domain

# Usage: julia setup-system.jl package1 package2 ...
# Also, don't forget to add '@system' to your LOAD_PATH like this way:
#   $ env JULIA_LOAD_PATH='@:@v#.#:@system:@stdlib' julia

using Pkg
packages = ARGS
popfirst!(DEPOT_PATH)  # remove user's depot
Pkg.activate("system", shared = true)
Pkg.add(packages)
Pkg.precompile()
# make cache files readable to others (see
# https://github.com/JuliaLang/julia/issues/25971)
cachedir = joinpath(DEPOT_PATH[1], "compiled")
for cachefile in eachline(`find $(cachedir) -name '*.ji'`)
    chmod(cachefile, 0o666)
end