Write dependencies in Julia's stdlib using DOT format

stdlib-deps-dot.jl

import Pkg
import Pkg.TOML

const STDLIB_DIR = "/home/rs/opt/julia-1.0.2/share/julia/stdlib/v1.0"
const STDLIBS = readdir(STDLIB_DIR)

println("digraph stdlib {")

for (i, stdlib) in enumerate(STDLIBS)
    proj = Pkg.TOML.parsefile(joinpath(STDLIB_DIR, stdlib, "Project.toml"))
    if haskey(proj, "deps")
        for (stdlib_dep, uuid) in proj["deps"]
            println(stdlib, " -> ", stdlib_dep)
        end
    end
end

println("}")