This is from the self-review by the UCLA Department of Philosophy in 2012 (which has been making the rounds on social media); it's a useful reality check on a lot of the blather in cyber-space:
This guides our approach to hiring: we place a premium on finding creative, talented people who can contribute to the intellectual life of the department. Like many top philosophy departments, we view raw intellectual talent as a sine qua non of an appointment; it's the lifeblood of any thriving philosophy department. Even so, we are mindful that there are specific areas in which we are understaffed....While different members of the department balance these needs differently, all are agreed that, in the matter of appointments, a first-rate department must give highest priority to quality of mind: better a gap than a stopgap.... (p. 3)
I think there's little question that the latter represents the actual thinking of almost all the top-ranked PGR programs. On the other hand, what follows seems to me more UCLA-specific:
Although much of the best philosophical work occurs in journal articles, we think it is important to avoid letting this create a bias toward quantity of publication. The best articles are rare creatures. It is our expectation that work of this quality will be done by our colleagues. This standard is shared by many of the best departments in the profession. It can create a problem for us, though, when authorities at a higher level of review are unaware of the standards that prevail in the better departments in our discipline: not only do philosophers tend to have fewer publications than those working in other disciplines (especially in the humanities), but very good philosophers often publish fewer--and more searching--articles than less good philosophers. (pp. 4-5)