Removal of `PACKAGE_PREFIX_DIR` breaks our code
With !9390 (merged) and starting with release CMake 3.29.1, you introduced PACKAGE_<MODULE>_COUNTER_<COUNTER>
because PACKAGE_PREFIX_DIR
was problematic in nested projects.
Our code relies on the variable PACKAGE_PREFIX_DIR
for a couple of years and releases. Our code breaks with CMake 3.29.1.
Was this intentional? Is PACKAGE_PREFIX_DIR
an internal implementation detail?