
* nlohmann-json: 3.7.0 The version 3.6.0 fix compile issues with GCC 9.0. * nlohmann-json: proper test handling tests are controlled via `spack install --test root|all ...` instead of a variant.
* nlohmann-json: 3.7.0 The version 3.6.0 fix compile issues with GCC 9.0. * nlohmann-json: proper test handling tests are controlled via `spack install --test root|all ...` instead of a variant.