/ 
App-lcpan-1.074
River stage two • 42 direct dependents • 69 total dependents
/ App::lcpan::Cmd::deps

NAME

App::lcpan::Cmd::deps - List dependencies of distributions

VERSION

This document describes version 1.074 of App::lcpan::Cmd::deps (from Perl distribution App-lcpan), released on 2023-09-26.

FUNCTIONS

handle_cmd

Usage:

handle_cmd(%args) -> [$status_code, $reason, $payload, \%result_meta]

List dependencies of distributions.

Examples:

  • List what modules Module-List requires:

    handle_cmd(dists => ["Module-List"]);

  • List modules Module-List requires (module name will be converted to distro name):

    handle_cmd(dists => ["Module::List"]);

  • List what distribution that contains Sah::Schema::filename requires:

    handle_cmd(modules => ["Sah::Schema::filename"]);

    Sah::Schema::filename is included in Sah-Schemas-Path distribution, so this command is equivalent to "lcpan deps Sah-Schemas-Path". You can't do "lcpan deps Sah::Schema::filename" because lcpan will assume that you ask "lcpan deps Sah-Schema-filename" and there is no Sah-Schema-filename distribution.

  • List non-core modules Module-List requires:

    handle_cmd(dists => ["Module-List"], include_core => 0);

  • List dependencies of a specific distribution release:

    handle_cmd(dists => ["Module-List\@0.004"]);

By default only runtime requires are displayed. To see prereqs for other phases (e.g. configure, or build, or ALL) or for other relationships (e.g. recommends, or ALL), use the --phase and --rel options.

Note that dependencies information are taken from META.json or META.yml files. Not all releases (especially older ones) contain them. lcpan (like MetaCPAN) does not extract information from Makefile.PL or Build.PL because that requires running (untrusted) code.

Also, some releases specify dynamic config, so there might actually be more dependencies.

This function is not exported.

Arguments ('*' denotes required arguments):

  • added_or_updated_since => date

    Include only records that are added/updated since a certain date.

  • added_or_updated_since_last_index_update => true

    Include only records that are added/updated since the last index update.

  • added_or_updated_since_last_n_index_updates => posint

    Include only records that are added/updated since the last N index updates.

  • added_since => date

    Include only records that are added since a certain date.

  • added_since_last_index_update => true

    Include only records that are added since the last index update.

  • added_since_last_n_index_updates => posint

    Include only records that are added since the last N index updates.

  • cpan => dirname

    Location of your local CPAN mirror, e.g. /path/to/cpan.

    Defaults to ~/cpan.

  • dists => array[perl::distname_with_optional_ver]

    Distribution names (with optional version suffix, e.g. Foo-Bar@1.23).

  • dont_uniquify => bool

    Allow showing multiple modules for different dists.

  • exclude_deps => array[perl::modname]

    Exclude some dependencies from being shown.

  • flatten => bool

    Instead of showing tree-like information, flatten it.

    When recursing, the default is to show the final result in a tree-like table, i.e. indented according to levels, e.g.:

    % lcpan deps -R MyModule
| module            | author  | version |
|-------------------|---------|---------|
| Foo               | AUTHOR1 | 0.01    |
|   Bar             | AUTHOR2 | 0.23    |
|   Baz             | AUTHOR3 | 1.15    |
| Qux               | AUTHOR2 | 0       |

    To be brief, if Qux happens to also depends on Bar, it will not be shown in the result. Thus we don't know the actual Bar version that is needed by the dependency tree of MyModule. For example, if Qux happens to depends on Bar version 0.45 then MyModule indirectly requires Bar 0.45.

    To list all the direct and indirect dependencies on a single flat list, with versions already resolved to the largest version required, use the flatten option:

    % lcpan deps -R --flatten MyModule
| module            | author  | version |
|-------------------|---------|---------|
| Foo               | AUTHOR1 | 0.01    |
| Bar               | AUTHOR2 | 0.45    |
| Baz               | AUTHOR3 | 1.15    |
| Qux               | AUTHOR2 | 0       |

    Note that Bar's required version is already 0.45 in the above example.

  • include_core => bool (default: 1)

    Include core modules.

  • include_indexed => bool (default: 1)

    Include modules that are indexed (listed in 02packages.details.txt.gz).

  • include_noncore => bool (default: 1)

    Include non-core modules.

  • include_unindexed => bool (default: 1)

    Include modules that are not indexed (not listed in 02packages.details.txt.gz).

  • index_name => filename (default: "index.db")

    Filename of index.

    If index_name is a filename without any path, e.g. index.db then index will be located in the top-level of cpan. If index_name contains a path, e.g. ./index.db or /home/ujang/lcpan.db then the index will be located solely using the index_name.

  • level => int (default: 1)

    Recurse for a number of levels (-1 means unlimited).

  • modules => array[perl::modname]

    (No description)

  • perl_version => str (default: "v5.38.0")

    Set base Perl version for determining core modules.

  • phase => str (default: "runtime")

    (No description)

  • rel => str (default: "requires")

    (No description)

  • update_db_schema => bool (default: 1)

    Whether to update database schema to the latest.

    By default, when the application starts and reads the index database, it updates the database schema to the latest if the database happens to be last updated by an older version of the application and has the old database schema (since database schema is updated from time to time, for example at 1.070 the database schema is at version 15).

    When you disable this option, the application will not update the database schema. This option is for testing only, because it will probably cause the application to run abnormally and then die with a SQL error when reading/writing to the database.

    Note that in certain modes e.g. doing tab completion, the application also will not update the database schema.

  • updated_since => date

    Include only records that are updated since certain date.

  • updated_since_last_index_update => true

    Include only records that are updated since the last index update.

  • updated_since_last_n_index_updates => posint

    Include only records that are updated since the last N index updates.

  • use_bootstrap => bool (default: 1)

    Whether to use bootstrap database from App-lcpan-Bootstrap.

    If you are indexing your private CPAN-like repository, you want to turn this off.

  • with_xs_or_pp => bool

    Check each dependency as XS/PP.

Returns an enveloped result (an array).

First element ($status_code) is an integer containing HTTP-like status code (200 means OK, 4xx caller error, 5xx function error). Second element ($reason) is a string containing error message, or something like "OK" if status is 200. Third element ($payload) is the actual result, but usually not present when enveloped result is an error response ($status_code is not 2xx). Fourth element (%result_meta) is called result metadata and is optional, a hash that contains extra information, much like how HTTP response headers provide additional metadata.

Return value: (any)

HOMEPAGE

Please visit the project's homepage at https://metacpan.org/release/App-lcpan.

SOURCE

Source repository is at https://github.com/perlancar/perl-App-lcpan.

AUTHOR

perlancar <perlancar@cpan.org>

CONTRIBUTING

To contribute, you can send patches by email/via RT, or send pull requests on GitHub.

Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:

% prove -l

If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps required beyond that are considered a bug and can be reported to me.

COPYRIGHT AND LICENSE

This software is copyright (c) 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015 by perlancar <perlancar@cpan.org>.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

BUGS

Please report any bugs or feature requests on the bugtracker website https://rt.cpan.org/Public/Dist/Display.html?Name=App-lcpan

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.