treewide: Don't use envHook anymore

This commits needs a MAJOR audit as I oftentimes just guessed which of
`$hostOffset`, `$targetOffset`, or a fixed offset should be used.

pkgs/development/libraries/grantlee/5/setup-hook.sh

@@ -10,8 +10,4 @@ _grantleeEnvHook() {
         propagatedUserEnvPkgs+=" $1"
     fi
 }
-if [ "$crossEnv" ]; then
-    crossEnvHooks+=(_grantleeEnvHook)
-else
-    envHooks+=(_grantleeEnvHook)
-fi
+addEnvHooks "$hostOffset" _grantleeEnvHook