See  bug 736215  for background and discussion; in short, if you try to build `all`, then some changes may affect so many targets that the total length of the list of targets exceeds 8k or even 128k, and exceed the max command line on a platform.

Generally we work around this with response files, but you can't actually use a response file as an input to ninja itself.

I've filed https://github.com/ninja-build/ninja/issues/1355 to fix this; this bug will be used to flag the external dependency.