liblzma -> xz / kdelibs4 dependency conundrum

[dave@…]

pluto:~ dave% sudo port uninstall inactive 
--->  Unable to uninstall liblzma @5.0.3_0, the following ports depend on it:
--->  	kdelibs4 @4.8.3_2
Error: org.macports.uninstall for port liblzma returned: Please uninstall the ports that depend on liblzma first.
Please see the log file for port liblzma for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_registry_portfiles_liblzma_5.0.3_0/liblzma/main.log
Warning: Failed to execute portfile from registry for liblzma @5.0.3_0
--->  Unable to uninstall liblzma @5.0.3_0, the following ports depend on it:
--->  	kdelibs4 @4.8.3_2
Error: port uninstall failed: Please uninstall the ports that depend on liblzma first.
pluto:~ dave% port installed | grep kdelib
  kdelibs4 @4.8.3_2 (active)
pluto:~ dave% sudo port activate liblzma  
--->  Activating liblzma @5.0.3_0
Error: org.macports.activate for port liblzma returned: Image error: /opt/local/include/lzma.h is being used by the active xz port.  Please deactivate this port first, or use 'port -f activate liblzma' to force the activation.
Please see the log file for port liblzma for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_registry_portfiles_liblzma_5.0.3_0/liblzma/main.log
Warning: Failed to execute portfile from registry for liblzma @5.0.3_0
--->  Activating liblzma @5.0.3_0
Error: port activate failed: Image error: /opt/local/include/lzma.h is being used by the active xz port.  Please deactivate this port first, or use 'port -f activate liblzma' to force the activation.
pluto:~ dave% 

Seems I can't use xz with kdelibs4?

[ryandesign@…]

Duplicate of #35321.