Add install function back with deprecation warning

pysr/__init__.py

@@ -7,6 +7,7 @@ from . import sklearn_monkeypatch
 from .deprecated import best, best_callable, best_row, best_tex, pysr
 from .export_jax import sympy2jax
 from .export_torch import sympy2torch
+from .julia_helpers import install
 from .sr import PySRRegressor
 
 # This file is created by setuptools_scm during the build process:
@@ -26,4 +27,5 @@ __all__ = [
     "pysr",
     "__version__",
     "jl",
+    "install",
 ]

pysr/julia_helpers.py

@@ -1,4 +1,6 @@
 """Functions for initializing the Julia environment and installing deps."""
+import warnings
+
 from juliacall import convert as jl_convert  # type: ignore
 
 from .julia_import import jl
@@ -7,6 +9,14 @@ jl.seval("using Serialization: Serialization")
 jl.seval("using PythonCall: PythonCall")
 
 
+def install(*args, **kwargs):
+    del args, kwargs
+    warnings.warn(
+        "The `install` function has been removed. "
+        "PySR now uses the `juliacall` package to install its dependencies automatically at import time. "
+    )
+
+
 def _escape_filename(filename):
     """Turn a path into a string with correctly escaped backslashes."""
     str_repr = str(filename)