Now that we have resource://devtools, we should be able to remove the path list from SrcdirProvider and just redirect resource://devtools instead.

Note that bug 1201710 and external libs prevents you from doing that. But I think we can mitigate that by changing how we package them, and instead package them as-is. By as-is I mean as they are in the source tree. Loader.jsm does this: "gcli": "resource://devtools/gcli", That fails if we pass resource://devtools to /mozilla-central/devtools. Instead we should package libs "as-is" and just have a shortcut that would work for both builtin and srcdir: "gcli": "resource://devtools/shared/gcli/source/lib/gcli",

Given that I'm about to remove SrcDirProvider in bug 1250430, I imagine we can WONTFIX this bug. Please reopen if there is still something to do.