R-rgl: update to 1.2.8, unbreak build on Sonoma

See: https://trac.macports.org/ticket/68830
dmurdoch/rgl#397

R/R-rgl/Portfile

@@ -4,17 +4,17 @@ PortSystem 1.0
 PortGroup R 1.0
 
 # Revert to GitHub once updated there.
-R.setup cran dmurdoch rgl 1.2.1
+R.setup cran dmurdoch rgl 1.2.8
 revision 0
 categories-append graphics
 maintainers {@barracuda156 gmail.com:vital.had} openmaintainer
-license {GPL-2 GPL-3}
+license GPL
 description 3D visualization using OpenGL
 long_description {*}${description}
 homepage https://dmurdoch.github.io/rgl
-checksums rmd160 00683a2075306d67a7bf56e84aec20c1154e7ff4 \
- sha256 d12a3f35527f260f8d393ae842c7705df5656669a72907f78aa64a363c6dcb9b \
- size 2557027
+checksums rmd160 8168b41f80ac4c51c4f7b672941187e618885965 \
+ sha256 e535e738702d0babe043c1fec3d358c7bfdfe202ad95d68971b28ad7a81717f4 \
+ size 2557113
 
 depends_build-append \
  port:pkgconfig
@@ -28,16 +28,24 @@ depends_lib-append port:freetype \
  port:R-magrittr \
  port:R-mime \
  port:R-R6 \
- port:xorg-libX11 \
  port:zlib
 
-destroot.pre_args-append \
+# Enabling X11 breaks the build on Sonoma:
+# https://trac.macports.org/ticket/68830
+# https://github.com/dmurdoch/rgl/issues/397
+if {(${os.platform} eq "darwin" && ${os.major} < 22) || ${os.platform} ne "darwin"} {
+ depends_lib-append \
+ port:xorg-libX11
+
+ destroot.pre_args-append \
  --configure-args=' \
  --with-x \
  --x-includes=${prefix}/include/X11 \
  --x-libraries=${prefix}/lib \
  '
+}
 
+# TODO: implement tests, verify on PowerPC.
 # FIXME: https://github.com/dmurdoch/rgl/issues/317
 if {${os.platform} eq "darwin" && ${os.major} < 11} {
  destroot.pre_args-append \