Instruction for updating existing package

Author: IvanSavenko

README.md

@@ -2,7 +2,7 @@
 
 Conan dependencies for windows
 
-For generating:
+## For generating:
 
 - Use or install Ubuntu 22.04
 
@@ -35,3 +35,12 @@ For generating:
 - Create output archive with dependencies:
 - - `tar -czvf vcmi-deps-windows-conan-w64.tgz -C ~/.conan data`
 
+## For rebuilding (without library versions change)
+- Install packages (as above)
+- Install conan (as above)
+- Clone vcmi repo (as above)
+- (!) Unpack latest prebuilt package into ~/.conan
+- (!) Modify conanfile.py in vcmi repo as needed
+- Run conan (as above)
+- Remove temporary files (as above)
+- Create output archive (as above)