Unable to create a shell shellcraft for MIPS

[Arusekk]

The problem is as follows:

>>> from pwnlib.shellcraft import mips
>>> mips.sh()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<string>", line 8, in sh
  File "/usr/lib64/python2.7/site-packages/mako/template.py", line 462, in render
    return runtime._render(self, self.callable_, args, data)
  File "/usr/lib64/python2.7/site-packages/mako/runtime.py", line 838, in _render
    **_kwargs_for_callable(callable_, data))
  File "/usr/lib64/python2.7/site-packages/mako/runtime.py", line 873, in _render_context
    _exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
  File "/usr/lib64/python2.7/site-packages/mako/runtime.py", line 899, in _exec_template
    callable_(context, *args, **kwargs)
  File "/home/are/.pwntools-cache/mako/mips/linux/sh.asm.py", line 28, in render_body
    __M_writer(unicode(mips.execve('//bin/sh', ['sh'], {})))
  File "<string>", line 8, in execve
  File "/usr/lib64/python2.7/site-packages/mako/template.py", line 462, in render
    return runtime._render(self, self.callable_, args, data)
  File "/usr/lib64/python2.7/site-packages/mako/runtime.py", line 838, in _render
    **_kwargs_for_callable(callable_, data))
  File "/usr/lib64/python2.7/site-packages/mako/runtime.py", line 873, in _render_context
    _exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
  File "/usr/lib64/python2.7/site-packages/mako/runtime.py", line 899, in _exec_template
    callable_(context, *args, **kwargs)
  File "/home/are/.pwntools-cache/mako/mips/linux/syscalls/execve.asm.py", line 69, in render_body
    if arg in allregs:
TypeError: unhashable type: 'list'

But it can be fixed by making sure that shellcraft.registers.current() returns a list rather than a dict (mips is the only architecture that it happens for, since type(shellcraft.registers.mips)==dict). A pull request is on its way.