Function for loading a package with a specific manifest

[DilumAluthge]

I'm just putting this here since it's semi-relevant, but also because Slack is ephemeral.

julia> import Pkg

julia> function load_manifest(; kwargs...)
           pkg = Pkg.PackageSpec(; kwargs...)
           return load_manifest(pkg)
       end

julia> function load_manifest(pkg::Pkg.Types.PackageSpec, shared::Bool = true)
           ctx = Pkg.Types.Context()
           return load_manifest(ctx, pkg, shared)
       end

julia> function load_manifest(ctx::Pkg.Types.Context, pkg::Pkg.Types.PackageSpec, shared::Bool = true)
           Pkg.Types.handle_repo_develop!(ctx, pkg, shared)
           devpath = Pkg.Types.devpath(ctx, pkg.name, shared)
           Pkg.activate(devpath)
           Pkg.instantiate()
           return devpath
       end

julia> load_manifest(url = "https://github.com/JuliaComputing/ToyFHE.jl")

julia> using ToyFHE