http://contributor-covenant.org/
"Marginalized people also suffer some of the unintended consequences of dogmatic insistence on meritocratic principles of governance. Studies have shown that organizational cultures that value meritocracy often result in greater inequality. People with "merit" are often excused for their bad behavior in public spaces based on the value of their technical contributions. Meritocracy also naively assumes a level playing field, in which everyone has access to the same resources, free time, and common life experiences to draw upon. These factors and more make contributing to open source a daunting prospect for many people, especially women and other underrepresented people. (For more critical analysis of meritocracy, refer to this entry on the Geek Feminism wiki.)
An easy way to begin addressing this problem is to be overt in our openness, welcoming all people to contribute, and pledging in return to value them as human beings and to foster an atmosphere of kindness, cooperation, and understanding."
AFAIK the word "merit" doesn't appear at all in the actual Code of Conduct.