Define a bash variable named JL_FORCE_LOCAL:
export JL_FORCE_LOCAL=true
This will cause jl to use the local scheduler even if an actual queueing system is available. It will indicate this by printing the message
jl status
.jobs: Using local scheduler
...
It's even possible to jump between schedulers:
jl submit "sleep 100"
jl kill
## continue locally
export JL_FORCE_LOCAL=true
jl resub --retry
This is especially handy to debug failing jobs.
To restore scheduler auto-detection, simply remove the variable with
unset JL_FORCE_LOCAL
See section Batch Submission in the user manual