Sun Nov 26 16:27:55 EST 2017

cross-compiling, conclusion

1. The infrastructure is there, but it seems that most packages are
not meant to be cross-compiled.

2. Cross-compiled packages have large closures which include the build
tools.  This looks like something that just hasn't been fixed yet.

3. Performing a non-nix cross-compile might still be doable.  However,
compiling buildroot on nix is problematic.

In general, unless I really need it, it is probably best to stay away
from it.