digraph G {
    pack=16;
    graph [ dpi = 300 ]; 
    bgcolor=transparent;
    truecolor=true;
    {rank=same;sshd;uwsgie;nginx;incron;}
    //rankdir=LR;
    subgraph uwsgi_tree {
        uwsgie [label="uwsgi" style=filled fillcolor=white fontname="Arial"];
        uwsgiv [label="vassal" style=filled fillcolor=white fontname="Arial"];
        uwsgi_ini [fontname="Arial"];
    }
    subgraph piku_env {
       label="piku user";
       {rank=same;piku;nginx_confd;}
       sshd [style=filled fillcolor=white fontname="Arial"];
       piku [style=filled fillcolor=white fontname="Arial"];
       sshd->piku;
       piku->git [label="push", fontname="Arial"];
       subgraph cluster_app_env {
            label="Application environment" fontname="Arial" style=filled fillcolor=lightgrey labelloc=b ordering=out;
            {rank=same;git;uwsgiv;}
            {rank=same;reqs;uwsgi_ini;nginx_conf;}
            uwsgie->uwsgiv;
            uwsgiv->uwsgi_ini [arrowhead=none style=dashed];
            virtualenv [style=filled fillcolor=white shape=folder fontname="Arial"];
            git [style=filled fillcolor=white shape=folder label="git repo" fontname="Arial"];
            env [style=filled fillcolor=white shape=note label="ENV" fontname="Arial"];
            reqs [style=filled fillcolor=white shape=note label="requirements.txt" fontname="Arial"];
            app [style=filled fillcolor=white shape=folder fontname="Arial"];
            git->env;
            env->uwsgi_ini;
            env->nginx_conf;
            git->app;
            uwsgi_ini [style=filled fillcolor=white label="uwsgi.ini" shape=note fontname="Arial"];
            nginx_conf [style=filled fillcolor=white label="nginx.conf", shape=note, fontname="Arial"];
            git->reqs;
            reqs->virtualenv;
            uwsgi_ini->virtualenv;
            nginx_conf->app;
       }
    }
    subgraph nginx_tree {
        nginx [fontname="Arial" style=filled fillcolor=white];
        nginx_confd [label="master\nnginx.conf" shape=note style=filled fillcolor=white fontname="Arial"];
        nginx->nginx_confd [arrowhead=none style=dashed];
        nginx_confd->nginx_conf [arrowhead=none style=dashed];
    }
    subgraph incron_tree {
        incron [fontname="Arial" style=filled fillcolor=white];
        nginx_conf -> incron [label="watch", style="dotted", fontname="Arial" weight=0]; 
        incron -> nginx [label="reload" style="dotted" fontname="Arial" weight=0];
        incron->nginx_conf [style=invis];
    }
}