After creating an escript app:
$ rebar3 new escript hello
Can I run with with rebar3, instead of calling escriptize first?
I.e. something like this?
$ rebar3 run
One solution might be to add a "run" directive to your makefile instead - this way you can call make run which does the escriptize step and runs the result.
Depending on what you really want to achieve running ./rebar3 shell might help you - I do this sometimes so I can debug portions of code just by running the required functions.
Finally you could always write a rebar plugin that extends the escriptize step ;) - never done it myself for rebar3 but has to be easier than the old rebar...