spack:
  specs:
    - "fairlogger@2.2.0 ^fmt@:11"
    - "boost@1.66: +container +program_options +filesystem +date_time +regex"
    - "libzmq@4.1.4:"
    - ninja
    - "cmake@3.15:"

  config:
    install_tree:
      root: /opt/spack
      padded_length: 128

  mirrors:
    local-buildcache:
      url: oci://ghcr.io/fairrootgroup/fairmq-spack-buildcache
      signed: false