# from Shlomi Fish
# on Monday 04 August 2008 04:14:
>> But a patch demonstrating what you want would probably be more
>> convincing, in that we could much better understand what it is you
>> want.
>
>I think I can accomplish that using a sub-class, so that will be my
> first lead. I'll also do it TDD-style, so you can understand what I
> mean using the tests.
Just write some code that does what you want to do. I recommend that it
is neither a patch nor a subclass.
#META.in.yml
add_to_cleanup:
- Math-Vec-*
- META.yml
create_makefile_pl: passthrough
dist_version_from: lib/Math/Vec.pm
license: perl
module_name: Math::Vec
test_requires:
Test::More: 0
# Build.PL
...
use YAML;
my $builder = $build_class->new(
%{YAML::LoadFile('META.in.yml')},
);
Done? Of course there's the hang-up that not all build parameters turn
into META.yml, so it would be nice to have some parallels between them
instead of needing to put a meta_merge in your META.in.yml.
There is the problem of now needing configure_requires => YAML, but you
might as well since patching Module::Build::YAML to support Load()
would just mean adding a configure_requires for a newer M::B.
The point is to minimize the barrier to installation without being
totally bored as an author, so maybe just have a Build.PL.in template
and a tool to instantiate the Build.PL.
$template =~ s/^\s*# PARAMETERS GO HERE.*$/$params_string/m;
Obviously, not all dependencies can be static - thus the Build.PL and
the dynamic_config flag. But your tool could certainly just conjure a
stock Build.PL boilerplate if it doesn't find a Build.PL.in file.
We've also talked about a META.local.yml file as a way for the installer
toolchain to have a more uniform handling of dynamic_config => 1.
In theory, I could set dynamic_config => 0 in my META.yml and quit
shipping a Build.PL file, right? Ah well, one can dream.
By the way, saying "because I want to" is a terrible answer to "why?".
Perhaps you hove some reason like being able to automate module
publishing, simplifying input data, or eliminating troubles with stale
templates. I've probably had 2-3 episodes of hacking together some
shell and perl translations to my Build.PL files (of which there are
60+ in my checkouts dir atm.)
--Eric
--
Minimum wage help gives you minimum service.
--David Schomer
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