shorten spack dir

examples/01_real-from-ideal.sh

@@ -127,8 +127,8 @@ spack:
   compiler: "gcc@11.3.0" # desired compiler for spack
   root: "%HPCROOTDIR%/../spack" # path to a spack install, will be downloaded to if not present
   externals: "slurm"
-  user_cache_path:  "%HPCROOTDIR%/../spack_user_cache_path" # spack puts data here when bootstrapping, leave empty to use home folder
-  user_config_path: "%HPCROOTDIR%/../spack_user_config_path" # spack puts data here when bootstrapping, leave empty to use home folder
+  user_cache_path:  "%HPCROOTDIR%/../spackcache" # spack puts data here when bootstrapping, leave empty to use home folder
+  user_config_path: "%HPCROOTDIR%/../spackconfig" # spack puts data here when bootstrapping, leave empty to use home folder
   disable_local_config: false # if true, spack installs into spack source dir
   upstreams: "/software/opt/focal/x86_64/spack/2023.02"