Various valid long-term desireable situations coexist, and while discussing immediate countermeasures, it is useful to keep the long-term outcome that those are most likely to produce.
-These are the five possible situations at the time of bullseye (buster + 1):
+These are the six possible situations at the time of bullseye (buster + 1):
* `none`: "merged `/usr`" has been reverted
* `weak`: both directory schemes are allowed, packages only built on classical hosts
-* `hard`: both directory schemes are allowed, packages can be built anywhere
-* `all` : only "merged `/usr`" directory schemes are allowed, packages only built on "merged `/usr`" hosts
+* `middle`: both directory schemes are allowed, packages can be built anywhere
+* `hard`: both directory schemes are allowed, packages only built on "merged `/usr`" hosts
+* `all`: only "merged `/usr`" directory schemes are allowed, packages only built on "merged `/usr`" hosts
* `full`: only "merged `/usr`" directory schemes are allowed, symlinks have been removed
It can be summarized by the following table:
|----------|-----------------|-------------------|------------------|—----------------|-------------------|---------------------|----------------------|
| none | yes | no | no | yes | no | yes | yes |
| weak | yes | yes | yes | yes | no | no | yes |
-| hard | yes | yes | yes | yes | yes | no | no |
+| middle | yes | yes | yes | yes | yes | no | no |
+| hard | yes | yes | yes | no | yes | no | no |
| all | no | yes | yes | no | yes | yes | no |
| full | no | yes | no | no | yes | yes | yes |
```