x11/wcm: explicitly require wayfire to be installed

$ wcm
[src/file.cpp:441] Failed to open XML directory /usr/local/share/wayfire/metadata
[src/file.cpp:441] Failed to open XML directory /usr/local/share/wayfire/metadata/wf-shell
Process 91210 stopped
* thread #1, name = 'wcm', stop reason = signal SIGSEGV: invalid address (fault address: 0x8)
    frame #0: 0x0000000801164ea5 libwf-config.so.1`std::__1::unique_ptr<wf::config::section_t::impl, std::__1::default_delete<wf::config::section_t::impl> >::operator->(this=0x0000000000000008) const at memory:2587:19
   2584   }
   2585   _LIBCPP_INLINE_VISIBILITY
   2586   pointer operator->() const _NOEXCEPT {
-> 2587     return __ptr_.first();
   2588   }
   2589   _LIBCPP_INLINE_VISIBILITY
   2590   pointer get() const _NOEXCEPT {
(lldb) bt
* thread #1, name = 'wcm', stop reason = signal SIGSEGV: invalid address (fault address: 0x8)
  * frame #0: 0x0000000801164ea5 libwf-config.so.1`std::__1::unique_ptr<wf::config::section_t::impl, std::__1::default_delete<wf::config::section_t::impl> >::operator->(this=0x0000000000000008) const at memory:2587:19
    frame #1: 0x00000008011647ec libwf-config.so.1`wf::config::section_t::get_option_or(this=0x0000000000000000, name="plugins") at section.cpp:37:9
    frame #2: 0x00000008011648a7 libwf-config.so.1`wf::config::section_t::get_option(this=0x0000000000000000, name="plugins") at section.cpp:46:19
    frame #3: 0x0000000000217453 wcm`init(wcm=0x000000080251b320) at main.cpp:221:29
    frame #4: 0x00000000002172e2 wcm`main(argc=1, argv=0x00007fffffffeb70) at main.cpp:257:5
    frame #5: 0x0000000000216750 wcm`_start(ap=<unavailable>, cleanup=<unavailable>) at crt1.c:76:7

x11/wcm/Makefile

@@ -3,6 +3,7 @@
 PORTNAME=	wcm
 DISTVERSIONPREFIX=	v
 DISTVERSION=	0.6.0
+PORTREVISION=	1
 CATEGORIES=	x11
 
 MAINTAINER=	jbeich@FreeBSD.org
@@ -17,6 +18,7 @@ BUILD_DEPENDS=	evdev-proto>0:devel/evdev-proto \
 LIB_DEPENDS=	libevdev.so:devel/libevdev \
 		libwf-config.so:devel/wf-config \
 		libwayland-client.so:graphics/wayland
+RUN_DEPENDS=	wayfire>0:x11-wm/wayfire
 
 CONFLICTS_INSTALL=	wcmcommander # bin/wcm