Dist::Zilla::Plugin::Prereqs::Recommend::MatchInstalled - Advertise versions of things you have as soft dependencies
version 0.003004
[Prereqs::MatchInstalled] was a good concept, but its application seemed too strong for some things.
This is a variation on the same theme, but instead of upgrading dependencies in-place, it propagates the upgrade to a different relation, to produce a softer dependency map.
Below shows the defaults expanded by hand.
[Prereqs::Recommend::MatchInstalled]
applyto_phase = configure
applyto_phase = runtime
applyto_phase = test
applyto_phase = build
applyto_phase = develop
source_relation = requires
target_relation = recommends
And add these stanzas for example:
modules = Module::Build
modules = Moose
And you have yourself a distribution that won't needlessly increase the dependencies
on either, but will add increased dependencies to the recommends phase.
This way, people doing
cpanm YourModule
Get only what they need
While
cpanm --with-recommends YourModule
Will get more recent things upgraded
The [Prereqs::Recommend::MatchInstalled] is a tool for authors who wish to
keep end users informed of which versions of critical dependencies the author
has themselves used, as an encouragement for the users to consume at least that
version, but without making it a hard requirement.
In practice this can be used for anything, but this modules author currently
recommends you restrict this approach only to development dependencies,
mostly because even a system of auto-recommendation is still too aggressive
for most modules, or if you insist this concept on CPAN, use something with
"but not larger than" mechanics like [Prereqs::Upgrade]
[Prereqs::Recommend::MatchInstalled]
applyto_phase = SOMEPHASE
applyto_phase = SOMEPHASE
This attribute can be specified multiple times.
Valuable values are:
build test runtime configure develop
And those are the default values too.
[Prereqs::Recommend::MatchInstalled]
source_relation = requires
This attribute specifies the prerequisites to skim for modules to recommend upgrades on.
Valuable values are:
requires recommends suggests
Lastly:
conflicts
Will probably do something, but I have no idea if that means anything. If you want to conflict with what you've installed with, ... go right ahead.
[Prereqs::Recommend::MatchInstalled]
target_relation = recommends
This attribute specifies the relationship type to inject upgrades into.
Valuable values are:
requires recommends suggests
Lastly:
conflicts
Will probably do something, but I have no idea if that means anything. If you want to conflict with what you've installed with, ... go right ahead.
[Prereqs::Recommend::MatchInstalled]
applyto_map = runtime.requires = runtime.recommends
This attribute is the advanced internals of the other attributes, and it exists for insane, advanced, and niché applications.
General format is:
applyto_map = <source_phase>.<source_relation> = <target_phase>.<target_relation>
And you can probably do everything with this.
You could also conceivably emulate [Prereqs::MatchInstalled] in entirety by using this feature excessively.
applyto_map may be declared multiple times.
Kent Fredric kentnl@cpan.org
This software is copyright (c) 2017 by Kent Fredric kentfredric@gmail.com.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.