Script Recipes
Recipes with a [script(COMMAND)]1.32.0 attribute are run as
scripts interpreted by COMMAND. This avoids some of the issues with shebang
recipes, such as the use of cygpath on Windows, the need to use
/usr/bin/env, and inconsistences in shebang line splitting across Unix OSs.
Recipes with an empty [script] attribute are executed with the value of set script-interpreter := […]1.33.0, defaulting to sh -eu, and not
the value of set shell.
The body of the recipe is evaluated, written to disk in the temporary
directory, and run by passing its path as an argument to COMMAND.
The [script(…)] attribute is unstable, so you’ll need to use set unstable,
set the JUST_UNSTABLE environment variable, or pass --unstable on the
command line.