On Sat, Apr 21, 2012 at 12:39:26AM +1200, Kent Fredric wrote:
> If you really want to support Perl Modules, ( which theres not much
> need for at present, looks like the team have gone through already for
> the most part and added remote-id's where possible already ), anything
> that inherits 'perl-module.eclass' has a bit of magic, in that neither
> SRC_URI or HOMEPAGE is required in the ebuild, and it just gets the
> package name from what gentoo is using.  We've tried to be as close to
> upstream as possible for the ease of maintenance.

Actually the eclass seems to fill SRC_URI and HOMEPAGE, so when you source
the ebuild they are available.

> However, there are still exception cases, for instance, BioPerl has to
> define 'MY_PN' to tell the perl-module eclass to use a different token
> ( and when this is present, it should be sufficient to say that that
> should be the remote-id instead of the package name:
>     see dev-perl/Moose  # an example with neither src_uri or homepage
>     see sci-biology/bioperl # an example where the package name has
> been forced overridden as its changed upstream
> 
> But resolving module names is much trickier, its easy-ish to map a
> module name to a package using the service, but doing it the other way
> round is not so straight forward, as one package can have many
> modules, and its common in perl to state dependencies in terms of the
> module to require, not the package its in, but there's also often a
> defacto "main module".
> 
> But I'm myself still working out how to best do that with the service
> , so auto-populating a "cpan-module" identifier can be left to later,
> its just something I considered "useful" to have metadata wise because
> that value is more useful to users.

Yeah, not very important, but seems to work with this patch:
https://github.com/iksaif/portage-janitor/commit/972aff94744741e34e99f917337430d245883c48

Example:
$ python remoteids.py --diff WWW-Bugzilla Moose bioperl
--- a/dev-perl/WWW-Bugzilla/metadata.xml
+++ b/dev-perl/WWW-Bugzilla/metadata.xml
@@ -3,6 +3,7 @@
 <pkgmetadata>
   <herd>perl</herd>
   <upstream>
+    <remote-id type="cpan-module">WWW::Bugzilla</remote-id>
     <remote-id type="cpan">WWW-Bugzilla</remote-id>
   </upstream>
 </pkgmetadata>
--- a/dev-perl/Moose/metadata.xml
+++ b/dev-perl/Moose/metadata.xml
@@ -3,6 +3,7 @@
 <pkgmetadata>
   <herd>perl</herd>
   <upstream>
+    <remote-id type="cpan-module">Moose</remote-id>
     <remote-id type="cpan">Moose</remote-id>
   </upstream>
 </pkgmetadata>
--- a/sci-biology/bioperl/metadata.xml
+++ b/sci-biology/bioperl/metadata.xml
@@ -8,6 +8,7 @@ 
                <flag name="db">Install sci-biology/bioperl-run</flag>
        </use>
        <upstream>
+               <remote-id type="cpan-module">BioPerl</remote-id>
                <remote-id type="cpan">BioPerl</remote-id>
        </upstream>
 </pkgmetadata>

-- 
Corentin Chary
http://xf.iksaif.net/