Re: Can ExtUtils::MakeMaker recommend to install optional modules?

This article sums up dependencies pretty well.

Here's how you specify recommended/suggested dependencies:

use ExtUtils::MakeMaker 6.64;

WriteMakefile(
    # other stuff
    META_MERGE => {
        "meta-spec" => { version => 2 },
        prereqs => {
            test => {
                recommends => {
                    'CPAN::Meta' => '2.120900',
                },
            },
            runtime => {
                recommends => {
                    'Text::CSV_XS' => 0,
                },
            },
        },
    },
);
[download]

Comment on Re: Can ExtUtils::MakeMaker recommend to install optional modules? Download Code

Replies are listed 'Best First'.
Re^2: Can ExtUtils::MakeMaker recommend to install optional modules? by 1nickt (Canon) on Dec 01, 2017 at 12:44 UTC
Here's how you specify recommended/suggested dependencies: For the record: there is a difference between `recommends` and `suggests`. The two (and `requires` and `conflicts`) exist so the module author has more control over, well, recommendations and suggestions. Not all versions of all clients support the newest spec, but recent ones do. CPAN::Meta::Spec `prereqs` section Neil Bowers blog on specifying dependencies Hope this helps! The way forward always starts with a minimal test.	[reply] [d/l] [select]
Re^2: Can ExtUtils::MakeMaker recommend to install optional modules? by Anonymous Monk on Jan 13, 2018 at 13:27 UTC
What if I don't want the recommended additional packages? How can I force the build to ignore the recommends? In my case a command line tool recommends, through a chain of dependencies, that I install the X server. I really don't want to do that.	[reply]
Re^3: Can ExtUtils::MakeMaker recommend to install optional modules? by Dallaylaen (Chaplain) on Jan 13, 2018 at 16:02 UTC
Default cpan client has `recommends_policy` and `suggests_policy` options under `o conf` just for that. Couldn't find anything in `cpanm`, but maybe it can, too. No idea about cpanplus. Btw installing raw CPAN on perlbrew was nontrivial, though not complicated after all. Maybe brew should bundle a script for that...	[reply]
Re^4: Can ExtUtils::MakeMaker recommend to install optional modules? by Anonymous Monk on Jan 13, 2018 at 19:22 UTC
--with-recommends, --with-suggests EXPERIMENTAL: Installs dependencies declared as recommends and suggest +s respectively, per META spec. When these dependencies fail to instal +l, cpanm continues the installation, since they're just recommendatio +n/suggestion. Enabling this could potentially make a circular dependency for a few m +odules on CPAN, when recommends adds a module that recommends back th +e module in return. There's also --without-recommend and --without-suggests to override th +e default decision made earlier in PERL_CPANM_OPT. Defaults to false for both. [download]	[reply] [d/l]