---
name: "cpangraph"
section: "1p"
platform: "linux"
package: "libcpandb-perl"
version: "0.19-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/cpangraph"
---

# cpangraph(1p)

Generate dependency chain graphs for CPAN modules

## NAME

cpangraph - Generate dependency chain graphs for CPAN modules

## VERSION

Version 0.12

## SYNOPSIS

```
  cpangraph [options] <file>
    Options:
      --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
```

## OPTIONS

- **--help**

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

- **--perl**=VERSION

  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
  ```

- **--phase**=PHASE

  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

- **--rankdir**

  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.

- **--reverse**

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

- **--verbose**

  Display extra output useful during debugging.

## DESCRIPTION

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

## AUTHOR

Adam Kennedy \<adamk@cpan.org\>

## SUPPORT

For support details, please look at `"perldoc CPANDB"` and use the corresponding support methods.

## LICENSE

This has the same copyright and licensing terms as CPANDB.