Comment 5 for bug 784020

One solution to this issue that could work for both Ubuntu and for the low-disk-space variants Xubuntu and Lubuntu would be to check for a new file casper/minimum-diskspace, and to use that value (in bytes) if it exists, otherwise use the old approach of casper/filesystem.size "plus a bit" -- where "a bit" needs to really be a "small bit"! Then Xubuntu and Lubuntu can use the "old way", and the bigger distributions can set a specific and exact minimum size requirement by creating the new casper/filesystem.size file when they need more space.

Is this workable? I am willing to attempt a patch to do that, if it would be likely to be accepted.

The underlying cause of this seems to be the ubiquity team making a late change to accommodate Ubuntu and Kubuntu installations, without checking what the impact would be on the other variants that are more disk-space sensitive.

I suggest that it would be better for everyone if all relevant Ubuntu variants were considered, and tested, when changes like this are made to ubiquity in future.