[almet]

I'm not sure it's not do-able, actually. What about having an execution sandbox and a way to check the calls made during the execution of the install script for instance?

I worked a few years back on something like this but it went nowhere, but I still believe it would be doable and useful. The only trace I found back is https://wiki.python.org/moin/Testing%20Infrastructure, which contains almost no info...