In the routing example, the routing idents are [:login :top] and [:main :top] vs what I’d first expect: [:top :login] and [:top :main]. Can someone explain the reasoning or point me to some clarification docs?

Om determines which query to use based on the first entry in the ident so it's what must change.

Idents in general have the form [kind id]

Where kind matters in unions

@pithyless

npm i -g gulp seemed to work fine.

But npm i did not: npm ERR! install Couldn't read dependencies