Have you looked into using Shiv or Pex? https://shiv.readthedocs.io/en/latest/ and https://github.com/pantsbuild/pex

a lot tle bit, seems especially attractive for distributing dagit

My understanding is that Shiv has advantages over Pex given that it had the opportunity to learn from the shortcomings of Pex. In terms of building an executable, if you want a single binary I would look into PyOxidizer. It doesn't support all of the same versions of Python as Dagster/Dagit, but it's pretty compelling.