gnome-desktop: minor fix-ups

gnome/gnome-desktop/Portfile

@@ -3,6 +3,7 @@
 PortSystem          1.0
 PortGroup           active_variants 1.1
 PortGroup           meson 1.0
+PortGroup           muniversal 1.0
 
 name                gnome-desktop
 version             3.38.9
@@ -11,16 +12,15 @@ set branch          [join [lrange [split ${version} .] 0 1] .]
 maintainers         {devans @dbevans} openmaintainer
 categories          gnome
 license             LGPL-2+
-platforms           darwin
-description         gnome-desktop contains the libgnome-desktop library as well as a data \
+description         ${name} contains the libgnome-desktop library as well as a data \
                     file that exports the GNOME version to the Settings Details panel.
 
 long_description    ${description} The libgnome-desktop library provides API shared \
                     by several applications on the desktop, but that cannot live \
                     in the platform for various reasons. Documentation for the API \
                     is available with gtk-doc.
 
-homepage            https://www.gnome.org/
+homepage            https://www.gnome.org
 master_sites        gnome:sources/${name}/${branch}/
 
 use_xz              yes
@@ -30,12 +30,11 @@ checksums           rmd160  e95f41c176eb7c0005f540f77747811b76a4ed04 \
                     size    745920
 
 depends_build-append \
-                    port:pkgconfig \
+                    path:bin/pkg-config:pkgconfig \
                     port:itstool \
                     port:gtk-doc
 
-depends_lib         port:desktop-file-utils \
-                    port:fontconfig \
+depends_lib-append  port:fontconfig \
                     path:lib/pkgconfig/gobject-introspection-1.0.pc:gobject-introspection \
                     port:gsettings-desktop-schemas \
                     path:lib/pkgconfig/gtk+-3.0.pc:gtk3 \
@@ -68,8 +67,4 @@ if {${universal_possible} && [variant_isset universal]} {
     destroot.env-append    "CC=${configure.cc} ${configure.cc_archflags}"
 }
 
-post-activate {
-    system "${prefix}/bin/update-desktop-database ${prefix}/share/applications"
-}
-
 livecheck.type      gnome