Comment 1 for bug 1609910

To add on to this, I've found it it very valuable in the past to actually embed info such as the git sha of the project into that version data so that you can easily identify what build is actually running. This is really useful for development purposes. I rebuilt juju and wanted to make sure that the build worked and my version was correct but --version just notes that it's betaXX and I couldn't find a way to get a real sha to verify it was using what I thought it was.