eshell-interpreter-alist

eshell-interpreter-alist is a variable defined in `esh-ext.el'.
Its value is

nil

Documentation:
An alist defining interpreter substitutions.
Each member is a cons cell of the form:

(MATCH . INTERPRETER)

MATCH should be a regexp, which is matched against the command
name, or a function of arity 2 receiving the COMMAND and its
ARGS (a list). If either returns a non-nil value, then
INTERPRETER will be used for that command.

If INTERPRETER is a string, it will be called as the command name,
with the original command name passed as the first argument, with all
subsequent arguments following. If INTERPRETER is a function, it will
be called with all of those arguments. Note that interpreter
functions should throw `eshell-replace-command' with the alternate
command form, or they should return a value compatible with the
possible return values of `eshell-external-command', which see.

You can customize this variable.