I've been using "bitmask" for a while, and if you have the virtualenv properly set, this works:

```
10967 ± : cd /tmp                                                                                                                                                                                                            [0m]
(leap-bitmask)
samsara 戝 /tmp 
10968 ◯ : bitmask --version                                                                                                                                                                                                      
Bitmask version: 0.3.2-33-g87516c8
(leap-bitmask)
samsara 戝 /tmp 
10969 ◯ : which bitmask                                                                                                                                                                                                          
/home/kali/Virtualenvs/leap-bitmask/bin/bitmask
```