makefile: Add target to run GUI debugger client

Makefile

@@ -73,6 +73,10 @@ gdb-server:
 gdb-client:
 	gdb --symbols $(BUILD_DIR)/$(TARGET).elf --init-eval-command="target extended-remote localhost:3333"
 
+.PHONY: gdb-guiclient
+gdb-guiclient:
+	gdbgui --gdb-cmd="gdb --init-eval-command='target extended-remote localhost:3333'" $(BUILD_DIR)/$(TARGET).elf
+
 .PHONY: clean
 clean:
 	rm -rf $(BUILD_DIR)

flake.nix

@@ -26,6 +26,7 @@
                   pkgs.stlink
                   pkgs.gdb
                   pkgs.openocd
+                  pkgs.gdbgui
                 ];
               };
             }