science/libecpint: Add explicit Python build dependency (D29353)
This unbreaks the build when using devel/samurai.
It previously got it through ninja which has a run dependency on
Python.
- Could NOT find Python (missing: Python_EXECUTABLE Interpreter)
CMake Error at src/CMakeLists.txt:22 (file):
file failed to open for reading (No such file or directory): /wrkdirs/usr/ports/science/libecpint/work/.build/src/qlist.txt
CMake Error at src/CMakeLists.txt:24 (add_custom_command):
add_custom_command Wrong syntax. A TARGET or OUTPUT must be specified.
PR: 254678