Now, use a variant +lmu to download from LMU mirrors
Otherwise use the original dkrz git repo

add copy of gettext to local spack_repo to remove the newest version because it leads to build bug when calling msgfmt

Fix build_python_environment.sh adding a new python variable in the configuration file. Also loading the first occurrence of python in case of multiple matches.

try to encapsulate spack.compiler string... problem is that it does get substituted in the icon.spack_cmd