I don't really like this, especially the sudo. As a quick fix, maybe we can run this only if $CI_ACTION is defined?

```makefile
check-gjslint-installed:
ifdef CI_ACTION
	command -v gjslint >/dev/null 2>&1 || sudo easy_install "$(CLOSURE_URL)"
else
	command -v gjslint >/dev/null 2>&1 && echo You should install gjslint && exit 1
endif
```

or even

```makefile
check-gjslint-installed:
ifdef CI_ACTION
	command -v gjslint >/dev/null 2>&1 || sudo easy_install "$(CLOSURE_URL)"
endif

```