Index: devel/Makefile
===================================================================
--- devel/Makefile
+++ devel/Makefile
@@ -2978,6 +2978,7 @@
     SUBDIR += p5-MooX-Locale-Passthrough
     SUBDIR += p5-MooX-Options
     SUBDIR += p5-MooX-Role-Parameterized
+    SUBDIR += p5-MooX-Singleton
     SUBDIR += p5-MooX-StrictConstructor
     SUBDIR += p5-MooX-Thunking
     SUBDIR += p5-MooX-Traits
Index: devel/p5-MooX-Singleton/Makefile
===================================================================
--- /dev/null
+++ devel/p5-MooX-Singleton/Makefile
@@ -0,0 +1,28 @@
+# Created by: Geoffroy Desvernay <dgeo@centrale-marseille.fr>
+# $FreeBSD$
+
+PORTNAME=	MooX-Singleton
+PORTVERSION=	1.20
+CATEGORIES=	devel perl5
+MASTER_SITES=	CPAN
+PKGNAMEPREFIX=	p5-
+
+MAINTAINER=	dgeo@centrale-marseille.fr
+COMMENT=	Turn your Moo class into singleton
+
+LICENSE=	ART10 GPLv1+
+LICENSE_COMB=	dual
+LICENSE_FILE_ART10=	${WRKSRC}/LICENSE
+LICENSE_FILE_GPLv1+ =	${WRKSRC}/LICENSE
+
+BUILD_DEPENDS=	p5-Moo>=0.009013:devel/p5-Moo
+RUN_DEPENDS=	p5-Moo>=0.009013:devel/p5-Moo
+
+USES=		perl5
+USE_PERL5=	configure
+
+NO_ARCH=	yes
+PLIST_FILES=	${SITE_PERL_REL}/MooX/Singleton.pm \
+		${SITE_MAN3_REL}/MooX::Singleton.3.gz
+
+.include <bsd.port.mk>
Index: devel/p5-MooX-Singleton/distinfo
===================================================================
--- /dev/null
+++ devel/p5-MooX-Singleton/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1553516707
+SHA256 (MooX-Singleton-1.20.tar.gz) = f7d7626fffde98f85ec12c1ee26b01f139a4dddd2f453ea56c341df194e3210e
+SIZE (MooX-Singleton-1.20.tar.gz) = 14420
Index: devel/p5-MooX-Singleton/pkg-descr
===================================================================
--- /dev/null
+++ devel/p5-MooX-Singleton/pkg-descr
@@ -0,0 +1,8 @@
+Role::Tiny role that provides "instance" method turning your object into
+singleton.
+
+NOTE: Subsequent calls to "instance" will return the singleton instance ignoring
+any arguments. This is different from MooseX::Singleton which does not allow any
+arguments.
+
+WWW: https://metacpan.org/pod/MooX::Singleton