small tool to query cpan deps

diff --git a/maint/joint_deps.pl b/maint/joint_deps.pl
new file mode 100755 (executable)
index 0000000..cfdbede
--- /dev/null
+++ b/maint/joint_deps.pl
@@ -0,0 +1,48 @@
+#!/usr/bin/perl
+
+use warnings;
+use strict;
+
+use CPANDB;
+use DBIx::Class::Schema::Loader 0.05;
+use Data::Dumper::Concise;
+
+{
+  package CPANDB::Schema;
+  use base qw/DBIx::Class::Schema::Loader/;
+
+  __PACKAGE__->loader_options (
+    naming => 'v5',
+  );
+}
+
+my $s = CPANDB::Schema->connect (sub { CPANDB->dbh } );
+
+# reference names are unstable - just create rels manually
+# is there a saner way to do that?
+my $distclass = $s->class('Distribution');
+$distclass->has_many (
+  'deps',
+  $s->class('Dependency'),
+  'distribution',
+);
+$s->unregister_source ('Distribution');
+$s->register_class ('Distribution', $distclass);
+
+
+# a proof of concept how to find out who uses us *AND* SQLT
+my $us_and_sqlt = $s->resultset('Distribution')->search (
+  {
+    'deps.dependency' => 'DBIx-Class',
+    'deps_2.dependency' => 'SQL-Translator',
+  },
+  {
+    join => [qw/deps deps/],
+    order_by => 'me.author',
+    select => [ 'me.distribution', 'me.author', map { "$_.phase" } (qw/deps deps_2/)],
+    as => [qw/dist_name dist_author req_dbic_at req_sqlt_at/],
+    result_class => 'DBIx::Class::ResultClass::HashRefInflator',
+  },
+);
+
+print Dumper [$us_and_sqlt->all];