Using GraphViz to visualize the runtime dependencies of the installed ports

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If you’re curious to find out how all your installed ports depend upon each other, you might want to run this neat, little script saving its output to a file, and install graphics/graphviz.

#!/bin/sh

# Copyright © 2014, Trond Endrestøl <Trond.Endrestol@ximalas.info>
# All rights reserved.

# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:

# 1. Redistributions of source code must retain the above copyright notice, this
#    list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

echo "digraph ports_tree {"

ORIGINS=`pkg info -aoq | sort`

for o in ${ORIGINS}; do
  DEPENDENCIES=`pkg query %do ${o} | sort`;

  if [ -z "${DEPENDENCIES}" ]; then
    REVDEPENDENCIES=`pkg query %ro ${o} | sort`;

    if [ -z "${REVDEPENDENCIES}" ]; then
      # A root port.
      echo "  \"${o}\";";
    fi;
  else
    for d in ${DEPENDENCIES}; do
      # ${o} needs ${d}.
      echo "  \"${d}\" -> \"${o}\";";
    done;
  fi;
done

echo "}"

Here’s a sample from a small VM at home:

digraph ports_tree {
  "databases/db41" -> "databases/ruby-bdb";
  "lang/ruby19" -> "databases/ruby-bdb";
  "textproc/expat2" -> "devel/apr1";
  "devel/autoconf-wrapper" -> "devel/autoconf";
  "devel/m4" -> "devel/autoconf";
  "lang/perl5.16" -> "devel/autoconf";
  "devel/autoconf" -> "devel/automake";
  "devel/automake-wrapper" -> "devel/automake";
  "lang/perl5.16" -> "devel/automake";
  "devel/m4" -> "devel/bison";
  "devel/gmake";
  "devel/libtool";
  "devel/libsigsegv" -> "devel/m4";
  "devel/pkgconf";
  "lang/python27" -> "devel/py-setuptools27";
  "devel/py-setuptools27" -> "devel/scons";
  "lang/python2" -> "devel/scons";
  "lang/python27" -> "devel/scons";
  "databases/sqlite3" -> "devel/subversion";
  "devel/apr1" -> "devel/subversion";
  "textproc/expat2" -> "devel/subversion";
  "www/serf" -> "devel/subversion";
  "lang/python27" -> "lang/python2";
  "devel/gettext" -> "lang/python27";
  "devel/libffi" -> "lang/ruby19";
  "textproc/libyaml" -> "lang/ruby19";
  "lang/perl5.16" -> "misc/help2man";
  "devel/protobuf" -> "net/mosh";
  "lang/perl5.16" -> "net/mosh";
  "ports-mgmt/dialog4ports";
  "ports-mgmt/pkg";
  "databases/ruby-bdb" -> "ports-mgmt/portupgrade";
  "lang/ruby19" -> "ports-mgmt/portupgrade";
  "shells/bash";
  "sysutils/lsof" -> "sysutils/htop";
  "lang/perl5.16" -> "sysutils/parallel";
  "devel/apr1" -> "www/serf";
  "textproc/expat2" -> "www/serf";
}

Here’s a PDF file of the above graph.

The PDF file was generated by a command like this one:

dot -Tpdf -O input-file.gv

The PDF file will usually be named input-file.gv.pdf.

A graph of a ports tree with approximately 550 vertices and more than 2500 edges, took about 1 minute to generate on an Intel Core i5-2400 running at 3.10 GHz.