They share a single executable:
$ pkglocate `which bundle` | grep bundle$
go-tools-1.12.20190226p0:devel/go-tools:/usr/local/bin/bundle
ruby-shims-2:devel/ruby-shims:/usr/local/bin/bundle
OK?
Index: devel/go-tools/Makefile
===================================================================
RCS file: /cvs/ports/devel/go-tools/Makefile,v
retrieving revision 1.24
diff -u -p -r1.24 Makefile
--- devel/go-tools/Makefile 12 Jul 2019 20:44:10 -0000 1.24
+++ devel/go-tools/Makefile 18 Apr 2020 22:01:59 -0000
@@ -7,7 +7,7 @@ GH_COMMIT = f727befe758c04ce68d52abc6e6
DISTNAME = go-tools-1.12.20190226
CATEGORIES = devel
HOMEPAGE = https://godoc.org/golang.org/x/tools
-REVISION = 0
+REVISION = 1
# 3-clause BSD
PERMIT_PACKAGE = Yes
Index: devel/go-tools/pkg/PLIST
===================================================================
RCS file: /cvs/ports/devel/go-tools/pkg/PLIST,v
retrieving revision 1.12
diff -u -p -r1.12 PLIST
--- devel/go-tools/pkg/PLIST 16 Mar 2019 13:42:06 -0000 1.12
+++ devel/go-tools/pkg/PLIST 18 Apr 2020 22:03:01 -0000
@@ -1,4 +1,5 @@
@comment $OpenBSD: PLIST,v 1.12 2019/03/16 13:42:06 jsing Exp $
+@conflict ruby-shims-*
@conflict stress-*
@pkgpath textproc/godoc
@rcscript ${RCDIR}/godoc
Index: devel/ruby-shims/Makefile
===================================================================
RCS file: /cvs/ports/devel/ruby-shims/Makefile,v
retrieving revision 1.2
diff -u -p -r1.2 Makefile
--- devel/ruby-shims/Makefile 15 Oct 2019 01:29:49 -0000 1.2
+++ devel/ruby-shims/Makefile 18 Apr 2020 22:03:54 -0000
@@ -4,6 +4,7 @@ COMMENT= Ruby version redirection shim
DISTNAME= ruby-shims-2
CATEGORIES= devel
+REVISION= 0
MAINTAINER= joshua stein <j...@openbsd.org>
Index: devel/ruby-shims/pkg/PLIST
===================================================================
RCS file: /cvs/ports/devel/ruby-shims/pkg/PLIST,v
retrieving revision 1.1.1.1
diff -u -p -r1.1.1.1 PLIST
--- devel/ruby-shims/pkg/PLIST 6 Sep 2019 17:02:02 -0000 1.1.1.1
+++ devel/ruby-shims/pkg/PLIST 18 Apr 2020 22:03:50 -0000
@@ -1,4 +1,5 @@
@comment $OpenBSD: PLIST,v 1.1.1.1 2019/09/06 17:02:02 jcs Exp $
+@conflict go-tools-*
bin/_rubyshim
bin/bundle
bin/bundler
