"error setting version:", but no clue what the invalid value was

[Michał Sawicz]

When something goes wrong with our dynamic version determination, we sometimes get:

error setting version: Snap versions consist of upper- and lower-case alphanumeric characters, as well as periods, colons, plus signs, tildes, and hyphens. They cannot begin with a period, colon, plus sign, tilde, or hyphen. They cannot end with a period, colon, or hyphen
Failed to execute pack in instance.

But what was the wrong version? Have to dig through the log to find it.

[Aritra Basu (nevgen)]

Is this a valid request? If so can I make this change?

[Aritra Basu (nevgen)]

I've created a pr for this https://github.com/snapcore/snapcraft/pull/4284, though if this is wanted perhaps other parameters should also output the erroneous values.