Apply verbosity=0 to Pkg statements

pysr/sr.py

@@ -1039,15 +1039,18 @@ class PySRRegressor(BaseEstimator, RegressorMixin):
             _, term_width = subprocess.check_output(["stty", "size"]).split()
 
         if not already_ran:
-            from julia import Pkg
+            Main.eval("using Pkg")
+            io = "devnull" if self.params["verbosity"] == 0 else "stderr"
 
-            Pkg.activate(f"{_escape_filename(self.julia_project)}")
+            Main.eval(
+                f'Pkg.activate("{_escape_filename(self.julia_project)}", io={io})'
+            )
             try:
                 if update:
-                    Pkg.resolve()
-                    Pkg.instantiate()
+                    Main.eval(f"Pkg.resolve(io={io})")
+                    Main.eval(f"Pkg.instantiate(io={io})")
                 else:
-                    Pkg.instantiate()
+                    Main.eval(f"Pkg.instantiate(io={io})")
             except RuntimeError as e:
                 raise ImportError(import_error_string(self.julia_project)) from e
             Main.eval("using SymbolicRegression")

test/test.py

@@ -34,12 +34,13 @@ class TestPipeline(unittest.TestCase):
         print(model.equations)
         self.assertLessEqual(model.equations.iloc[-1]["loss"], 1e-4)
 
-    def test_multioutput_custom_operator(self):
+    def test_multioutput_custom_operator_quiet(self):
         y = self.X[:, [0, 1]] ** 2
         model = PySRRegressor(
             unary_operators=["sq(x) = x^2"],
             extra_sympy_mappings={"sq": lambda x: x ** 2},
             binary_operators=["plus"],
+            verbosity=0,
             **self.default_test_kwargs,
             procs=0,
         )