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cpangraph - Generate dependency chain graphs for CPAN modules


Version 0.12


cpangraph [options] <file>

--help display a brief help message
--perl=VERSION filter those available in Perl core
--phase=PHASE filter those needed for a phase (e.g., build)
--rankdir controls the GraphViz 'rankdir' variable
--reverse graph reverse dependencies (dependents)
--verbose display additional debugging information


Prints a brief help message to the standard output and exits.

This displays dependencies which have been available in Perl core since the given
VERSION. It does not currently know if a module has been removed from core, but this
is an unlikely occurrence. Specify Perl versions in the form:

5.008008 # for versions >= 5.8.8
5.010 # for versions >= 5.10

This displays dependencies which are needed for a given module's install or runtime
PHASE. Available phases are:

· runtime: required whenever the module is used

· build: required to build the module

· configure: these are required while preparing the module for build

In GraphViz, the 'rankdir' attribute controls the direction that the nodes are linked
together. If set, the graph will use left -> right linking of nodes rather than the
default up-down linking.

Create a graph of the reverse dependencies of a package (the packages which depend on
it, or dependent packages).

Display extra output useful during debugging.


This script will use the CPAN Database to build a graph of a package's dependencies or
reverse dependencies (dependent packages).

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