# dnf5 install ./mailspring-1.15.1-0.1.x86_64.rpm
Failed to resolve the transaction:
Problem: conflicting requests
  - nothing provides lsb-core-noarch needed by mailspring-1.15.1-0.1.x86_64 from @commandline
You can try to add to command line:
  --skip-broken to skip uninstallable packages