stdlib dependency graph

# Credit to Kristoffer Carlsson
cd("/Users/kristoffer/julia/stdlib")
import TOML
using LightGraphs
import TikzGraphs

const STDLIB_DIR = "."
const STDLIBS = readdir(STDLIB_DIR)
deps = Dict{String, Int}()
for (i, stdlib) in enumerate(STDLIBS)
    deps[stdlib] = i
end
g = LightGraphs.SimpleGraphs.SimpleDiGraph(length(STDLIBS))

for (i, stdlib) in enumerate(STDLIBS)
    proj = TOML.parsefile(joinpath(STDLIB_DIR, stdlib, "Project.toml"))
    if haskey(proj, "deps")
        for (stdlib_dep, uuid) in proj["deps"]
            add_edge!(g, deps[stdlib], deps[stdlib_dep])
        end
    end
end
t = TikzGraphs.plot(g, Layouts.SimpleNecklace(), STDLIBS)
TikzPictures.save(SVG("graph"), t)