"old" --> "deprecated"

microsoft/surface/OLD-BEHAVIOUR-DEPRECATION.md

@@ -33,12 +33,12 @@ Tools / services that are shared among several models are now extracted to their
 `common/` and imported by `common/default.nix`.
 These new "common" modules now have an `enable` option, which is `false` by default.
 
-### "Old Behaviour" module
+### "Deprecated Behaviour" module
 
-The original `./default.nix` module has been replaced by a new `old/` module, which replicates the
+The original `./default.nix` module has been replaced by a new `deprecated/` module, which replicates the
 original behaviour.
 
-The new `./default.nix` will load the new `old/` module, but will also pop-up a warning asking users
+The new `./default.nix` will load the new `deprecated/` module, but will also pop-up a warning asking users
 to update how they use the microsoft/surface profile from now on.
 This warning will probably change to a fail assertion at some point in the future.
 

microsoft/surface/README.md

@@ -1,6 +1,6 @@
 # NOTE: Structure changes from 2023-01-10
 
-Please read the [Old Behaviour README](./old/README.md) to understand how some structural changes to
+Please read the [Deprecated Behaviour README](./deprecated/README.md) to understand how some structural changes to
 the code might affect you!
 
 # Derivatives for Microsoft Surface notebooks

microsoft/surface/default.nix

@@ -7,6 +7,6 @@ in {
   imports = [
     ( warn
       "Please do not import microsoft/surface/ (default.nix) directly; use microsoft/surface/old or see microsoft/surface/old/README.md for more details."
-      ./old )
+      ./deprecated )
   ];
 }