Use vimdebug in build-debug if nvim is available

build/build.plugin.zsh

@@ -17,11 +17,13 @@ if [ `uname` = Linux ]; then
     done
     nvim "+packadd termdebug" "+TermdebugCommand $args"
   }
-  if which gdb &> /dev/null; then
+  if command -v nvim &> /dev/null; then
+    alias debug=vimdebug
+  elif command -v gdb &> /dev/null; then
     alias debug='gdb --args'
   fi
 elif [ `uname` = Darwin ]; then
-  which lldb &> /dev/null && \
+  command -v lldb &> /dev/null && \
     alias debug='lldb --'
 fi