port_deptree.py prints the dependencies required by a port (from MacPorts, the package manager for OS X) as a graph. Port Variants are taken into account.
- A light yellow background indicates dependencies that would be installed.
- A light blue background indicates dependencies that would be upgraded.
Why does port install irssi -perl install perl anyway?
Running the program from the terminal:
$ python port_deptree.py irssi -perl | dot -Tpdf | open -fa Preview
produces the dependency graph below showing that perl is required by glib2, one of the direct dependencies of irssi.
The graph for graphviz demonstrates a more complete example.
The --min argument reduces the graph to its most relevant elements,
that is, the missing and outdated dependencies and their parents:
$ python port_deptree.py --min graphviz | dot -Tpdf | open -fa Preview
port_deptree.py is distributed under the BSD 3-Clause License, reproduced in LICENSE.txt.
port_deptree.py 0.8 and up requires py-altgraph. It is tested under Python 2.7 and 3.4. graphviz must also be installed to generate the graphs. Install the dependencies with:
$ port install py-altgraph graphviz
Then download port_deptree.py and copy it in a directory. From this directory, use as:
$ python port_deptree.py [--min] PORTNAME [-VARIANT +VARIANT ...]
port_deptree.py up to 0.7 required py-pydot.