'Installs GRR.'

def InstallGRR(self, path):

    cmd64 = [self.pip64, 'install']
    cmd32 = [self.pip32, 'install']
    if args.wheel_dir:
        cmd64 += ['--no-index', ('--find-links=file:///%s' % args.wheel_dir)]
        cmd32 += ['--no-index', ('--find-links=file:///%s' % args.wheel_dir)]
    cmd64.append(path)
    cmd32.append(path)
    subprocess.check_call(cmd64)
    if args.build_32:
        subprocess.check_call(cmd32)
