We need to ensure linkage to utmps, or utmpx won't work.

--- libptytty-2.0/CMakeLists.txt.old	2021-08-04 09:07:44.000000000 -0500
+++ libptytty-2.0/CMakeLists.txt	2024-05-30 19:50:40.078963587 -0500
@@ -318,6 +318,7 @@
   target_link_libraries(ptytty PRIVATE util)
   list(APPEND LIBS -lutil)
 endif()
+target_link_libraries(ptytty PRIVATE :libutmps.so.0.1)
 
 configure_file(
   libptytty.pc.in