add dh-elpa-Version: binary package field

There is a debhelper mechanism for dh_* tools to embed their versions
in generated maintscripts, but our emacsen-common maintscripts are not
true maintscripts, so we can't use that mechanism.

Using a binary package field makes it possible for us to find packages
that need rebuilding without looking inside the contents of any binary
packages.

1 files changed, 31 insertions, 0 deletions

diff --git a/elpa.pm.in b/elpa.pm.in
new file mode 100755
index 0000000..0e1f1e9
--- /dev/null
+++ b/elpa.pm.in
@@ -0,0 +1,31 @@
+#!/usr/bin/perl
+# debhelper sequence file for dh_elpa script
+
+use warnings;
+use strict;
+use Debian::Debhelper::Dh_Lib;
+use Dpkg::Version;
+use Module::Metadata;
+use Config::Tiny;
+
+insert_after("dh_install", "dh_elpa");
+
+add_command_options("dh_gencontrol", "--", "-Ddh-elpa-Version=@HELPER_VERSION@");
+
+# check dh_make_perl version is new enough for dh_elpa_test
+my $info = Module::Metadata->new_from_module("Debian::Control");
+my $version = Dpkg::Version->new($info->version());
+
+my $options;
+$options = Config::Tiny->read( "debian/elpa-test" )
+  if ( -f "debian/elpa-test" );
+
+if ( $version >= "0.90"
+     && !defined $options->{_}->{ "disable" }
+     && !defined $ENV{ 'DH_ELPA_TEST_DISABLE' }
+   ) {
+    insert_after("dh_auto_test", "dh_elpa_test");
+    remove_command("dh_auto_test");
+}
+
+1;