user@host:~/developing$ bst shell hello.bst -- hello

[--:--:--][][] START   Loading pipeline
[00:00:00][][] SUCCESS Loading pipeline
[--:--:--][][] START   Resolving pipeline
[00:00:00][][] SUCCESS Resolving pipeline
[--:--:--][][] START   Resolving cached state
[00:00:00][][] SUCCESS Resolving cached state
[--:--:--][][] START   Staging dependencies
[00:00:02][][] SUCCESS Staging dependencies
[--:--:--][][] START   Integrating sandbox
[00:00:00][][] SUCCESS Integrating sandbox
[--:--:--][b8bfc093][ main:hello.bst                     ] STATUS  Running command

    hello

Hello World
We can use workspaces!