Fix install path on mac tests

Author: grisuthedragon

.github/workflows/build-unix.yml

@@ -81,12 +81,13 @@ jobs:
         -D CMAKE_C_COMPILER="gcc"
         -D CMAKE_Fortran_COMPILER="gfortran"
         -D CMAKE_PREFIX_PATH="/opt/homebrew/opt/openblas"
+        -D CMAKE_INSTALL_PREFIX=${{github.workspace}}/lapack_install
         -D BLA_VENDOR=OpenBLAS
 
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
       # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
-      if: ${{ matrix.os == 'ubuntu-latest' }} 
+      if: ${{ matrix.os == 'ubuntu-latest' }}
       run: >
         cmake -B build -G Ninja
         -D CMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}