Global cowpath.d directory install is botched.
Fixed in src_install()

--- a/Makefile
+++ b/Makefile
@@ -79,7 +79,6 @@
 
 .PHONY: install
 install:
-	$(INSTALL_DIR) $(DESTDIR)$(cowpathdir)
 	$(INSTALL_DIR) $(DESTDIR)$(bindir)
 	$(INSTALL_PROGRAM) bin/cowsay $(DESTDIR)$(bindir)/cowsay
 	$(LN_S) cowsay $(DESTDIR)$(bindir)/cowthink