nvim_clipboard_xclip.py

from subprocess import Popen, PIPE

class NvimClipboard(object):
    def __init__(self, vim):
        self.provides = ['clipboard']

    def sel_name(self, reg):
        return 'clipboard' if reg == '+' else 'primary'

    def clipboard_get(self, reg):
        txt = Popen(['xclip', '-selection', self.sel_name(reg), '-o'], stdout=PIPE).communicate()[0]
        # emulate vim behavior
        if txt.endswith('\n'):
            txt = txt[:-1]
            regtype = 'V'
        else:
            regtype = 'v'
        return txt.split('\n'), regtype

    def clipboard_set(self, lines, regtype, reg):
        txt = '\n'.join([line for line in lines])
        if regtype == 'V':
            txt = txt + '\n'
        _cmd = ['xclip', '-selection', self.sel_name(reg)]
        Popen(_cmd, stdin=PIPE).communicate(txt)

Oops, lost the import when copying, it should work now.