Make sure every package using a C/C++ compiler depends on one

The "cc" virtual package provides the environment default compiler.

mingw-w64-python-numpy/PKGBUILD

@@ -18,6 +18,7 @@ url="https://www.numpy.org/"
 makedepends=("${MINGW_PACKAGE_PREFIX}-cython"
              "${MINGW_PACKAGE_PREFIX}-python-setuptools"
              "${MINGW_PACKAGE_PREFIX}-python-pytest"
+             "${MINGW_PACKAGE_PREFIX}-cc"
              $( [[ ${MINGW_PACKAGE_PREFIX} == *-clang-* ]] || \
                echo "${MINGW_PACKAGE_PREFIX}-gcc-fortran"))
 depends=("${MINGW_PACKAGE_PREFIX}-python"