Oh damn, this is actually wrong. 
You need to use the one from call, shouldn't make a great difference in this exact case, but anyway, the `call`s `env` should update the instance variable. 

My bad - sorry
> In lib/vagrant-librarian/install.rb:
> 
> > @@ -9,10 +9,11 @@ module Librarian
> >      class Install
> >        def initialize(app, env)
> >          @app = app
> > +        @env = env
> Is this just a cosmetic change or is there actually some advantage in keeping the env from the initialization instead of the one from the call itself?
> 
> —
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