This step could be skipped if you built different debs for different distro versions (in chroots for example, like sbuild does it).
Might be too much of a hassle, though, for a little gain. It just looks slightly wrong to me that you first install a deb and then go and overwrite many of the files the deb installed.
As one of the comments on the page says: "Well, it's a nice new picture but we've known its size, speed and origin for a very long time. Definitely not news."
> virtualenv /vrmd/$APP_NAME/venv
This step could be skipped if you built different debs for different distro versions (in chroots for example, like sbuild does it).
Might be too much of a hassle, though, for a little gain. It just looks slightly wrong to me that you first install a deb and then go and overwrite many of the files the deb installed.