1Menlo(3) User Contributed Perl Documentation Menlo(3)
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6 Menlo - A CPAN client
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9 Menlo is a backend for cpanm 2.0, developed with the goal to replace
10 cpanm internals with a set of modules that are more flexible,
11 extensible and easier to use.
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14 Menlo is developed within cpanminus git repository at "Menlo"
15 subdirectory at <https://github.com/miyagawa/cpanminus>
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17 Menlo::CLI::Compat started off as a copy of App::cpanminus::script, but
18 will go under a big refactoring to extract all the bits out of it.
19 Hopefully the end result will be just a shim and translation layer to
20 interpret command line options.
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23 cpanm has been a popular choice of CPAN package installer for many
24 developers, because it is lightweight, fast, and requires no
25 configuration in most environments.
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27 Meanwhile, the way cpanm has been implemented (one God class, and all
28 modules are packaged in one script with fatpacker) makes it difficult
29 to extend, or modify the behaviors at a runtime, unless you decide to
30 fork the code or monkeypatch its hidden backend class.
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32 cpanm also has no scriptable API or hook points, which means if you
33 want to write a tool that works with cpanm, you basically have to work
34 around its behavior by writing a shell wrapper, or parsing the output
35 of its standard out or a build log file.
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37 Menlo will keep the best aspects of cpanm, which is dependencies free,
38 configuration free, lightweight and fast to install CPAN modules. At
39 the same time, it's impelmented as a standard perl module, available on
40 CPAN, and you can extend its behavior by either using its modular
41 interfaces, or writing plugins to hook into its behaviors.
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44 Dependencies free? I see many prerequisites in Menlo.
45 Menlo is a set of libraries and uses non-core CPAN modules as its
46 dependencies. App-cpanminus distribution embeds Menlo and all of
47 its runtime dependencies into a fatpacked binary, so that you can
48 install App-cpanminus or Menlo without having any CPAN client to
49 begin with.
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51 Is Menlo a new name for cpanm?
52 Right now it's just a library name, but I'm comfortable calling
53 this a new package name for cpanm 2's backend.
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56 Tatsuhiko Miyagawa <miyagawa@bulknews.net>
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59 2010- Tatsuhiko Miyagawa
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62 This software is licensed under the same terms as Perl.
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65 cpanm
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69perl v5.34.0 2021-07-22 Menlo(3)