18 lines
820 B
Plaintext
18 lines
820 B
Plaintext
|
If it ever becomes necessary to scrap the entire core layer because of
|
||
|
|
a design flaw that's too difficult to work around, here's the
|
||
|
|
solution that provides a clean upgrade path:
|
||
|
|
|
||
|
|
-- insert a new s2layers row with a type of 'core' and a b2lid
|
||
|
|
of 0, like the existing core layer. but all core layers are
|
||
|
|
required to have a 'majorversion' layerinfo field.
|
||
|
|
|
||
|
|
-- make the /customize/ UI let people pick in the layer drop down
|
||
|
|
not just layers, but core+layer combos that work, labeled with
|
||
|
|
their major versions, so people will prefer higher ones.
|
||
|
|
|
||
|
|
-- the ljviews code that gives the data structure to S2 runner will
|
||
|
|
have to know which version the S2 code is expecting, and do the
|
||
|
|
right thing, based on the core layer's 'majorversion' data.
|
||
|
|
|
||
|
|
-- the S2 Builtin layer has to be a superset every version higher.
|