Do not pass PYTHONEXECUTABLE to worker, either

The PYTHONEXECUTABLE variable propagating to the worker process causes
the wrong (service) Python to be used, rather than the desired one from
the environment.

Signed-off-by: Curtis Rueden <ctrueden@wisc.edu>

Author: gletort

src/appose/environment.py

@@ -149,7 +149,12 @@ def python(self, *args) -> Service:
         # NB: Unset conda/mamba variables so they don't bleed into the worker
         # process and cause the wrong Python interpreter to be resolved.
         # Only clear variables not explicitly set by the caller via env().
-        conda_vars = ("CONDA_PREFIX", "CONDA_DEFAULT_ENV", "CONDA_SHLVL")
+        conda_vars = (
+            "CONDA_PREFIX",
+            "CONDA_DEFAULT_ENV",
+            "CONDA_SHLVL",
+            "PYTHONEXECUTABLE",
+        )
         explicit = self.env_vars()
         conda_unset = {var: None for var in conda_vars if var not in explicit}
         return (