Loihi Installation in nengo

I m trying to import nengo-loihi in my window but it shows this error message " cannot import name 'get_samples"
pleases help me in this…
here is the fullerror msg…

ImportError Traceback (most recent call last)
5 import nengo
6 from nengo.utils.matplotlib import rasterplot
----> 7 import nengo_loihi
9 # All Nengo Loihi models should call this before model construction

c:\users\shakil\appdata\local\programs\python\python36\lib\site-packages\nengo_loihi_init_.py in
5 from . import loihi_api
6 from . import loihi_cx
----> 7 from . import builder
8 from . import allocators
9 from . import loihi_interface

c:\users\shakil\appdata\local\programs\python\python36\lib\site-packages\nengo_loihi\builder.py in
16 import nengo.utils.numpy as npext
—> 18 from nengo_loihi import conv
19 from nengo_loihi.loihi_cx import (
20 ChipReceiveNeurons,

c:\users\shakil\appdata\local\programs\python\python36\lib\site-packages\nengo_loihi\conv.py in
6 from nengo import Direct, Ensemble, Node
7 from nengo.builder import Signal
----> 8 from nengo.builder.connection import BuiltConnection, get_samples, slice_signal
9 from nengo.builder.operator import (
10 Copy, DotInc, ElementwiseInc, Reset, SimPyFunc)

ImportError: cannot import name ‘get_samples’

It looks like you are using the development version of Nengo. Nengo Loihi is only compatible with the latest Nengo release version (2.8.0).