MNT Remove built_with_meson logic (#31718)

lesteve · web-flow · commit cfd5f7833dfb · 2025-07-07T15:43:10.000+02:00
diff --git a/sklearn/__init__.py b/sklearn/__init__.py
@@ -138,15 +138,6 @@ def __getattr__(name):
             raise AttributeError(f"Module 'sklearn' has no attribute '{name}'")
 
 
-_BUILT_WITH_MESON = False
-try:
-    import sklearn._built_with_meson  # noqa: F401
-
-    _BUILT_WITH_MESON = True
-except ModuleNotFoundError:
-    pass
-
-
 def setup_module(module):
     """Fixture for the tests to assure globally controllable seeding of RNGs"""
 
diff --git a/sklearn/meson.build b/sklearn/meson.build
@@ -222,18 +222,6 @@ cython_gen_cpp = generator(cython_program,
   output : '@BASENAME@.cpp',
 )
 
-# Write file in Meson build dir to be able to figure out from Python code
-# whether scikit-learn was built with Meson. Adapted from pandas
-# _version_meson.py.
-custom_target('write_built_with_meson_file',
-    output: '_built_with_meson.py',
-    command: [
-        py, '-c', 'with open("sklearn/_built_with_meson.py", "w") as f: f.write("")'
-    ],
-    install: true,
-    install_dir: py.get_install_dir() / 'sklearn'
-)
-
 extensions = ['_isotonic']
 
 py.extension_module(
