I'm trying to get bisect-ppx working in a fairly minimal environment that is representative of the tools that I like to use. Currently I'm getting

Processing file '<command-line>'...
 *** system error: <command-line>: No such file or directory

and when I output to a text file I get

Coverage summary: 14/15 (93.33%)
File '<command-line>': 14/15 (93.33%)

to use, first install esy and then just run

esy

to install dependencies

esy test

to run tests and

esy coverage

for the current test script.

You can run

esy bisect-ppx-report ...

to iterate from the command line without needing to modify package.json