SKIP_DEPS should also skip shell deps

plugins/shell.mk

@@ -23,6 +23,9 @@ help::
 
 $(foreach dep,$(SHELL_DEPS),$(eval $(call dep_target,$(dep))))
 
+ifneq ($(SKIP_DEPS),)
+build-shell-deps:
+else
 build-shell-deps: $(ALL_SHELL_DEPS_DIRS)
 	$(verbose) set -e; for dep in $(ALL_SHELL_DEPS_DIRS) ; do \
 		if [ -z "$(strip $(FULL))" ] && [ ! -L $$dep ] && [ -f $$dep/ebin/dep_built ]; then \
@@ -32,6 +35,7 @@ build-shell-deps: $(ALL_SHELL_DEPS_DIRS)
 			if [ ! -L $$dep ] && [ -d $$dep/ebin ]; then touch $$dep/ebin/dep_built; fi; \
 		fi \
 	done
+endif
 
 shell:: build-shell-deps
 	$(gen_verbose) $(SHELL_ERL) -pa $(SHELL_PATHS) $(SHELL_OPTS)