--- a/ProjectDefinition.st	Wed Jun 10 08:43:00 2015 +0100
+++ b/ProjectDefinition.st	Fri Jun 12 07:22:20 2015 +0100
@@ -103,6 +103,25 @@
       extensionOverwriteInfo. 
       This is used to correctly reinstall an overwritten method, whenever a package is unloaded.
 
+    ## Custom project definition methods
+
+    Some packages may want to compile custom methods when project definition is updated
+    based on project contents - similarly to how #classNamesAndAttributes or #extensionMethodNames
+    are updated.
+
+    To support this, packages mey add extension methods annotated by <method:category:overwrite:>
+    or <method:category:>. The meaning og arguments is the following:
+
+    * method: <Symbol>     - the selector of method which this method generates.
+    * category: <Symbol>   - the category in which to place generated method
+    * overwrite: <Boolean> - specifies whether the method should obe overwritten
+                             or not. Use `false` only for methods which should be
+                             generated once and then left for user to manually tweak.
+                             optional, defaults to `true` (i.e., do owerwrite methods)
+
+    The annotated method is invoked to get the code od the method to generate, i.e., it must
+    return the source code as String. If it returns nil - no method is generated.
+
     ## Build Support Files
 
     To support pre-compilation of a package, ProjectDefinition can generate a set of makefiles and other
@@ -873,6 +892,7 @@
 
 
 
+
 !ProjectDefinition class methodsFor:'accessing - packaging'!
 
 classNames:aCollectionOfClassNames
@@ -1135,6 +1155,7 @@
         ].
 ! !
 
+
 !ProjectDefinition class methodsFor:'accessing - tests'!
 
 excludedFromTestSuite
@@ -1662,6 +1683,8 @@
      If ignoreOldDefinition is true, new code is generated (class/method scan);
      otherwise, new items are added to the existing lists"
 
+    | cls |
+
     aTwoArgBlock
         value:(self classNamesAndAttributes_code_ignoreOldEntries:ignoreOldDefinition ignoreOldDefinition:ignoreOldDefinition)
         value:'description - contents'.
@@ -1699,7 +1722,32 @@
             value: 'description - monticello'.
     ].
 
-    "Modified: / 25-11-2013 / 13:56:33 / Jan Vrany <jan.vrany@fit.cvut.cz>"
+    "Add additional custom files"
+    cls := self.
+    [ cls ~~ Object ] whileTrue:[
+        cls class selectorsAndMethodsDo:[:selector :method |
+            | annotation overwrite |
+
+            annotation := method annotationAt: #method:category:overwrite:.
+            annotation notNil ifTrue:[ 
+                overwrite := annotation argumentAt: 3.
+            ] ifFalse:[ 
+                annotation := method annotationAt: #method:category:.
+                overwrite := true.
+            ].
+            (annotation notNil and:[ overwrite or:[ cls class methodDictionary includesKey: (annotation argumentAt:1) ] ]) ifTrue:[
+                | code |
+
+                code := self perform: selector.
+                code notNil ifTrue:[ 
+                    aTwoArgBlock value: code value: (annotation argumentAt: 2)
+                ].
+            ].
+        ].
+        cls := cls superclass.
+    ].
+
+    "Modified: / 12-06-2015 / 07:02:07 / Jan Vrany <jan.vrany@fit.cvut.cz>"
 !
 
 forEachDescriptionMethodsCodeToCompileDo:aTwoArgBlock ignoreOldDefinition:ignoreOldDefinition
@@ -2687,6 +2735,7 @@
 ! !
 
 
+
 !ProjectDefinition class methodsFor:'description - project information'!
 
 applicationAdditionalIconFileNames
@@ -7933,6 +7982,11 @@
     ^ '$Header$'
 !
 
+version_HG
+
+    ^ '$Changeset: <not expanded> $'
+!
+
 version_SVN
     ^ '$ Id: ProjectDefinition.st 10645 2011-06-09 15:28:45Z vranyj1  $'
 ! !