installation of CMake modules/ into different directory leads to configuration error with SIRIUS

[dev-zero]

no matter what I set for CMAKE_PREFIX_PATH or CMAKE_MODULE_PATH, SIRIUS is unable to locate FindFFTW.cmake required by SpFFT:

[...]
-- Found LibXC: /data/tiziano/cp2k/tools/toolchain/install/libxc-5.1.4/lib/libxc.a (Required is at least version "4.0.0")
-- Found LibSPG: /data/tiziano/cp2k/tools/toolchain/install/spglib-1.16.0/lib/libsymspg.a
-- Found HDF5: /data/tiziano/cp2k/tools/toolchain/install/hdf5-1.12.0/lib/libhdf5.a;/usr/lib64/libz.so;/usr/lib64/libdl.so;/usr/lib64/libm.so (found version "1.12.0") found components: C
CMake Error at /data/tiziano/cp2k/tools/toolchain/install/cmake-3.18.5/share/cmake-3.18/Modules/CMakeFindDependencyMacro.cmake:47 (find_package):
  By not providing "FindFFTW.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "FFTW", but
  CMake did not find one.

  Could not find a package configuration file provided by "FFTW" with any of
  the following names:

    FFTWConfig.cmake
    fftw-config.cmake

  Add the installation prefix of "FFTW" to CMAKE_PREFIX_PATH or set
  "FFTW_DIR" to a directory containing one of the above files.  If "FFTW"
  provides a separate development package or SDK, be sure it has been
  installed.
Call Stack (most recent call first):
  /data/tiziano/cp2k/tools/toolchain/install/SpFFT-1.0.3/lib/cmake/SpFFT/SpFFTStaticConfig.cmake:24 (find_dependency)
  /data/tiziano/cp2k/tools/toolchain/install/SpFFT-1.0.3/lib/cmake/SpFFT/SpFFTConfig.cmake:5 (include)
  CMakeLists.txt:138 (find_package)


-- Configuring incomplete, errors occurred!
See also "/data/tiziano/cp2k/tools/toolchain/build/SIRIUS-7.2.5/build/CMakeFiles/CMakeOutput.log".
ERROR: (./scripts/stage8/install_sirius.sh, line 139) Non-zero exit code detected.

Moving the modules/ directory from spfft/ to SpFFT/ where SpFFTTargets.cmake and friends are fixes the build error.

[AdhocMan]

You are right, the installation path for modules was incorrect. Wasn't a problem I noticed with a case-insensitive filesystem (macOS) 😅 .
Fixed by 22b16cc.
I'll create a new release with several CMake fixes today.