introduction of conflicts checking for Moo

This was copied from the latest Moose build (which in turn was auto-generated
via Dist::Zilla::Plugin::Conflicts).

diff --git a/Makefile.PL b/Makefile.PL
index a865867..e8c7e61 100644 (file)
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -2,6 +2,8 @@ use strict;
 use warnings FATAL => 'all';
 use 5.008001;
 use ExtUtils::MakeMaker;
+
+check_conflicts();
 (do 'maint/Makefile.PL.include' or die $@) unless -f 'META.yml';
 
 my %BUILD_DEPS = ();
@@ -43,10 +45,14 @@ my %extra_info = (
 WriteMakefile(
   NAME => 'Moo',
   VERSION_FROM => 'lib/Moo.pm',
+  CONFIGURE_REQUIRES => {
+    'Dist::CheckConflicts' => '0.02',
+  },
   PREREQ_PM => {
     %RUN_DEPS,
     ($] >= 5.010 ? () : ('MRO::Compat' => 0)),
     ($mymeta_works ? () : (%BUILD_DEPS)),
+    'Dist::CheckConflicts' => '0.02',
   },
   ($mymeta_works
     ? ( # BUILD_REQUIRES makes MYMETA right, requires stops META being wrong
@@ -70,5 +76,39 @@ WriteMakefile(
   },
   ($mymeta && !$mymeta_works ? (NO_MYMETA => 1) : ()),
   LICENSE => 'perl',
+  'EXE_FILES' => [
+    'bin/moo-outdated',
+  ],
 );
 
+
+# copied from Moose-2.0801/Makefile.PL
+sub check_conflicts {
+    if ( eval { require 'lib/Moo/Conflicts.pm'; 1; } ) {
+        if ( eval { Moo::Conflicts->check_conflicts; 1 } ) {
+            return;
+        }
+        else {
+            my $err = $@;
+            $err =~ s/^/    /mg;
+            warn "***\n$err***\n";
+        }
+    }
+    else {
+        print <<'EOF';
+***
+    Your toolchain doesn't support configure_requires, so
+    Dist::CheckConflicts hasn't been installed yet. You should check for
+    conflicting modules manually using the 'moo-outdated' script that is
+    installed with this distribution once the installation finishes.
+***
+EOF
+    }
+
+    # More or less copied from Module::Build
+    return if $ENV{PERL_MM_USE_DEFAULT};
+    return unless -t STDIN && ( -t STDOUT || !( -f STDOUT || -c STDOUT ) );
+
+    sleep 4;
+}
+

diff --git a/bin/moo-outdated b/bin/moo-outdated
new file mode 100644 (file)
index 0000000..e73862b
--- /dev/null
+++ b/bin/moo-outdated
@@ -0,0 +1,21 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+# PODNAME: moo-outdated
+
+use Getopt::Long;
+use Moo::Conflicts;
+
+my $verbose;
+GetOptions( 'verbose|v' => \$verbose );
+
+if ($verbose) {
+    Moo::Conflicts->check_conflicts;
+}
+else {
+    my @conflicts = Moo::Conflicts->calculate_conflicts;
+    print "$_\n" for map { $_->{package} } @conflicts;
+    exit @conflicts;
+}
+

diff --git a/lib/Moo/Conflicts.pm b/lib/Moo/Conflicts.pm
new file mode 100644 (file)
index 0000000..488e2ca
--- /dev/null
+++ b/lib/Moo/Conflicts.pm
@@ -0,0 +1,27 @@
+package # hide from PAUSE
+    Moo::Conflicts;
+
+use strict;
+use warnings;
+
+use Dist::CheckConflicts
+    -dist      => 'Moo',
+    -conflicts => {
+        # enter conflicting downstream deps here, with the version indicating
+        # the last *broken* version that *does not work*.
+
+    },
+
+    # these dists' ::Conflicts modules (if they exist) are also checked for
+    # more incompatibilities -- should include all runtime prereqs here.
+    -also => [ qw(
+        Carp
+        Class::Method::Modifiers
+        strictures
+        Module::Runtime
+        Role::Tiny
+        Devel::GlobalDestruction
+    ) ],
+;
+
+1;