From 819fbad836952d988fe3a8bc7f56474584a37715 Mon Sep 17 00:00:00 2001
From: David Ware <david.ware@netvalue.nz>
Date: Wed, 24 May 2023 11:13:30 +1200
Subject: [PATCH 1/7] Make find_files behavior opt-in.

Changes it so find_files is only enabled with config parameter
`enable_find_files` is set to true, otherwise will always return empty
list.
---
 README.rst                                   |  6 ++--
 src/setuptools_scm/_config.py                |  1 +
 src/setuptools_scm/_file_finders/__init__.py | 38 +++++++++++++++-----
 testing/test_file_finder.py                  | 22 ++++++++++--
 testing/test_git.py                          |  9 +++++
 5 files changed, 63 insertions(+), 13 deletions(-)

diff --git a/README.rst b/README.rst
index a48309c1..702343b4 100644
--- a/README.rst
+++ b/README.rst
@@ -7,8 +7,9 @@ or in a SCM managed file.
 
 Additionally ``setuptools_scm`` provides setuptools with a list of
 files that are managed by the SCM (i.e. it automatically adds all of
-the SCM-managed files to the sdist). Unwanted files must be excluded
-by discarding them via ``MANIFEST.in``.
+the SCM-managed files to the sdist). This is opt-in, by supplying
+config argument: ``enable_find_files``. Once opted in unwanted files
+must be excluded by discarding them via ``MANIFEST.in``.
 
 ``setuptools_scm`` supports the following scm out of the box:
 
@@ -77,6 +78,7 @@ to be supplied to ``get_version()``. For example:
     # pyproject.toml
     [tool.setuptools_scm]
     write_to = "pkg/_version.py"
+    enable_find_files = true
 
 Where ``pkg`` is the name of your package.
 
diff --git a/src/setuptools_scm/_config.py b/src/setuptools_scm/_config.py
index 108c86e7..d34e1e47 100644
--- a/src/setuptools_scm/_config.py
+++ b/src/setuptools_scm/_config.py
@@ -90,6 +90,7 @@ class Configuration:
     dist_name: str | None = None
     version_cls: type[_VersionT] = _Version
     search_parent_directories: bool = False
+    enable_find_files: bool = False
 
     parent: _t.PathT | None = None
 
diff --git a/src/setuptools_scm/_file_finders/__init__.py b/src/setuptools_scm/_file_finders/__init__.py
index 90726c45..e22529ce 100644
--- a/src/setuptools_scm/_file_finders/__init__.py
+++ b/src/setuptools_scm/_file_finders/__init__.py
@@ -2,12 +2,14 @@
 
 import itertools
 import os
-from typing import Callable
+from typing import Callable, Optional
 from typing import TYPE_CHECKING
 
+from .. import _config
 from .. import _log
 from .. import _types as _t
 from .._entrypoints import iter_entry_points
+from .._integration.setuptools import read_dist_name_from_setup_cfg
 
 if TYPE_CHECKING:
     from typing_extensions import TypeGuard
@@ -94,13 +96,31 @@ def is_toplevel_acceptable(toplevel: str | None) -> TypeGuard[str]:
     return toplevel not in ignored
 
 
+def _get_config() -> Optional[_config.Configuration]:
+    dist_name: Optional[str] = None
+    config: Optional[_config.Configuration] = None
+    if dist_name is None:
+        dist_name = read_dist_name_from_setup_cfg()
+    if not os.path.isfile("pyproject.toml"):
+        return None
+    if dist_name == "setuptools_scm":
+        return None
+    try:
+        config = _config.Configuration.from_file(dist_name=dist_name)
+    except LookupError as e:
+        log.exception(e)
+    return config
+
+
 def find_files(path: _t.PathT = "") -> list[str]:
-    for ep in itertools.chain(
-        iter_entry_points("setuptools_scm.files_command"),
-        iter_entry_points("setuptools_scm.files_command_fallback"),
-    ):
-        command: Callable[[_t.PathT], list[str]] = ep.load()
-        res: list[str] = command(path)
-        if res:
-            return res
+    config = _get_config()
+    if config is not None and config.enable_find_files:
+        for ep in itertools.chain(
+            iter_entry_points("setuptools_scm.files_command"),
+            iter_entry_points("setuptools_scm.files_command_fallback"),
+        ):
+            command: Callable[[_t.PathT], list[str]] = ep.load()
+            res: list[str] = command(path)
+            if res:
+                return res
     return []
diff --git a/testing/test_file_finder.py b/testing/test_file_finder.py
index 3825500d..3dae4167 100644
--- a/testing/test_file_finder.py
+++ b/testing/test_file_finder.py
@@ -2,6 +2,7 @@
 
 import os
 import sys
+from pathlib import Path
 from typing import Generator
 from typing import Iterable
 
@@ -11,6 +12,11 @@
 from setuptools_scm._file_finders import find_files
 
 
+def _write_pyproject_config(directory: Path, enable_find_files: bool) -> None:
+    with open(directory / "pyproject.toml", "wt") as fh:
+        fh.write(f"[project]\nname = \"test\"\n[tool.setuptools_scm]\nenable_find_files = {str(enable_find_files).lower()}\n")
+
+
 @pytest.fixture(params=["git", "hg"])
 def inwd(
     request: pytest.FixtureRequest, wd: WorkDir, monkeypatch: pytest.MonkeyPatch
@@ -42,6 +48,7 @@ def inwd(
     if request.node.get_closest_marker("skip_commit") is None:
         wd.add_and_commit()
     monkeypatch.chdir(wd.cwd)
+    _write_pyproject_config(wd.cwd, True)
     yield wd
 
 
@@ -55,6 +62,13 @@ def test_basic(inwd: WorkDir) -> None:
     assert set(find_files("adir")) == _sep({"adir/filea"})
 
 
+def test_basic_find_files_disabled(inwd: WorkDir) -> None:
+    _write_pyproject_config(inwd.cwd, False)
+    assert find_files() == []
+    assert find_files(".") == []
+    assert find_files("adir") == []
+
+
 def test_whitespace(inwd: WorkDir) -> None:
     (inwd.cwd / "adir" / "space file").touch()
     inwd.add_and_commit()
@@ -66,7 +80,7 @@ def test_case(inwd: WorkDir) -> None:
     (inwd.cwd / "file2").touch()
     inwd.add_and_commit()
     assert set(find_files()) == _sep(
-        {"CamelFile", "file2", "file1", "adir/filea", "bdir/fileb"}
+        {"CamelFile", "file2", "file1", "adir/filea", "bdir/fileb", "pyproject.toml"}
     )
 
 
@@ -174,6 +188,7 @@ def test_double_include_through_symlink(inwd: WorkDir) -> None:
             "adir/filea",
             "bdir/fileb",
             "data/datafile",
+            "pyproject.toml"
         }
     )
 
@@ -193,6 +208,7 @@ def test_symlink_not_in_scm_while_target_is(inwd: WorkDir) -> None:
             # because the symlink_to themselves are not in scm
             "bdir/fileb",
             "data/datafile",
+            "pyproject.toml"
         }
     )
 
@@ -207,6 +223,7 @@ def test_unexpanded_git_archival(wd: WorkDir, monkeypatch: pytest.MonkeyPatch) -
     # When substitutions in `.git_archival.txt` are not expanded, files should
     # not be automatically listed.
     monkeypatch.chdir(wd.cwd)
+    _write_pyproject_config(wd.cwd, True)
     (wd.cwd / ".git_archival.txt").write_text("node: $Format:%H$", encoding="utf-8")
     (wd.cwd / "file1.txt").touch()
     assert find_files() == []
@@ -219,6 +236,7 @@ def test_archive(
     # When substitutions in `.git_archival.txt` are not expanded, files should
     # not be automatically listed.
     monkeypatch.chdir(wd.cwd)
+    _write_pyproject_config(wd.cwd, True)
     sha = "a1bda3d984d1a40d7b00ae1d0869354d6d503001"
     (wd.cwd / archive_file).write_text(f"node: {sha}", encoding="utf-8")
     (wd.cwd / "data").mkdir()
@@ -230,4 +248,4 @@ def test_archive(
     else:
         os.link("data/datafile", datalink)
 
-    assert set(find_files()) == _sep({archive_file, "data/datafile", "data/datalink"})
+    assert set(find_files()) == _sep({archive_file, "data/datafile", "data/datalink", "pyproject.toml"})
diff --git a/testing/test_git.py b/testing/test_git.py
index 9e2e9b5c..da1edac5 100644
--- a/testing/test_git.py
+++ b/testing/test_git.py
@@ -33,6 +33,11 @@
 )
 
 
+def _write_pyproject_config(directory: Path, enable_find_files: bool) -> None:
+    with open(directory / "pyproject.toml", "wt") as fh:
+        fh.write(f"[project]\nname = \"test\"\n[tool.setuptools_scm]\nenable_find_files = {str(enable_find_files).lower()}\n")
+
+
 @pytest.fixture(name="wd")
 def wd(wd: WorkDir, monkeypatch: pytest.MonkeyPatch, debug_mode: DebugMode) -> WorkDir:
     debug_mode.disable()
@@ -98,6 +103,7 @@ def test_git_gone(wd: WorkDir, monkeypatch: pytest.MonkeyPatch) -> None:
 @pytest.mark.issue("https://github.com/pypa/setuptools_scm/issues/298")
 @pytest.mark.issue(403)
 def test_file_finder_no_history(wd: WorkDir, caplog: pytest.LogCaptureFixture) -> None:
+    _write_pyproject_config(wd.cwd, True)
     file_list = git_find_files(str(wd.cwd))
     assert file_list == []
 
@@ -359,6 +365,7 @@ def test_git_archive_export_ignore(
     wd("git add test1.txt test2.txt")
     wd.commit()
     monkeypatch.chdir(wd.cwd)
+    _write_pyproject_config(wd.cwd, True)
     assert setuptools_scm._file_finders.find_files(".") == [opj(".", "test1.txt")]
 
 
@@ -369,6 +376,7 @@ def test_git_archive_subdirectory(wd: WorkDir, monkeypatch: pytest.MonkeyPatch)
     wd("git add foobar")
     wd.commit()
     monkeypatch.chdir(wd.cwd)
+    _write_pyproject_config(wd.cwd, True)
     assert setuptools_scm._file_finders.find_files(".") == [
         opj(".", "foobar", "test1.txt")
     ]
@@ -383,6 +391,7 @@ def test_git_archive_run_from_subdirectory(
     wd("git add foobar")
     wd.commit()
     monkeypatch.chdir(wd.cwd / "foobar")
+    _write_pyproject_config(wd.cwd / "foobar", True)
     assert setuptools_scm._file_finders.find_files(".") == [opj(".", "test1.txt")]
 
 

From a4242f731f0f3de97bcd4acba73dc8d518162c02 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Tue, 23 May 2023 23:22:32 +0000
Subject: [PATCH 2/7] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 src/setuptools_scm/_file_finders/__init__.py |  9 +++++----
 testing/test_file_finder.py                  | 14 +++++++++-----
 testing/test_git.py                          |  6 ++++--
 3 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/src/setuptools_scm/_file_finders/__init__.py b/src/setuptools_scm/_file_finders/__init__.py
index e22529ce..f8983efa 100644
--- a/src/setuptools_scm/_file_finders/__init__.py
+++ b/src/setuptools_scm/_file_finders/__init__.py
@@ -2,7 +2,8 @@
 
 import itertools
 import os
-from typing import Callable, Optional
+from typing import Callable
+from typing import Optional
 from typing import TYPE_CHECKING
 
 from .. import _config
@@ -96,9 +97,9 @@ def is_toplevel_acceptable(toplevel: str | None) -> TypeGuard[str]:
     return toplevel not in ignored
 
 
-def _get_config() -> Optional[_config.Configuration]:
-    dist_name: Optional[str] = None
-    config: Optional[_config.Configuration] = None
+def _get_config() -> _config.Configuration | None:
+    dist_name: str | None = None
+    config: _config.Configuration | None = None
     if dist_name is None:
         dist_name = read_dist_name_from_setup_cfg()
     if not os.path.isfile("pyproject.toml"):
diff --git a/testing/test_file_finder.py b/testing/test_file_finder.py
index 3dae4167..18be0d36 100644
--- a/testing/test_file_finder.py
+++ b/testing/test_file_finder.py
@@ -13,8 +13,10 @@
 
 
 def _write_pyproject_config(directory: Path, enable_find_files: bool) -> None:
-    with open(directory / "pyproject.toml", "wt") as fh:
-        fh.write(f"[project]\nname = \"test\"\n[tool.setuptools_scm]\nenable_find_files = {str(enable_find_files).lower()}\n")
+    with open(directory / "pyproject.toml", "w") as fh:
+        fh.write(
+            f'[project]\nname = "test"\n[tool.setuptools_scm]\nenable_find_files = {str(enable_find_files).lower()}\n'
+        )
 
 
 @pytest.fixture(params=["git", "hg"])
@@ -188,7 +190,7 @@ def test_double_include_through_symlink(inwd: WorkDir) -> None:
             "adir/filea",
             "bdir/fileb",
             "data/datafile",
-            "pyproject.toml"
+            "pyproject.toml",
         }
     )
 
@@ -208,7 +210,7 @@ def test_symlink_not_in_scm_while_target_is(inwd: WorkDir) -> None:
             # because the symlink_to themselves are not in scm
             "bdir/fileb",
             "data/datafile",
-            "pyproject.toml"
+            "pyproject.toml",
         }
     )
 
@@ -248,4 +250,6 @@ def test_archive(
     else:
         os.link("data/datafile", datalink)
 
-    assert set(find_files()) == _sep({archive_file, "data/datafile", "data/datalink", "pyproject.toml"})
+    assert set(find_files()) == _sep(
+        {archive_file, "data/datafile", "data/datalink", "pyproject.toml"}
+    )
diff --git a/testing/test_git.py b/testing/test_git.py
index da1edac5..4eb26424 100644
--- a/testing/test_git.py
+++ b/testing/test_git.py
@@ -34,8 +34,10 @@
 
 
 def _write_pyproject_config(directory: Path, enable_find_files: bool) -> None:
-    with open(directory / "pyproject.toml", "wt") as fh:
-        fh.write(f"[project]\nname = \"test\"\n[tool.setuptools_scm]\nenable_find_files = {str(enable_find_files).lower()}\n")
+    with open(directory / "pyproject.toml", "w") as fh:
+        fh.write(
+            f'[project]\nname = "test"\n[tool.setuptools_scm]\nenable_find_files = {str(enable_find_files).lower()}\n'
+        )
 
 
 @pytest.fixture(name="wd")

From 46e5ce5935bbda0484224f006851f37731d3af4b Mon Sep 17 00:00:00 2001
From: David Ware <david.ware@netvalue.nz>
Date: Wed, 24 May 2023 14:55:41 +1200
Subject: [PATCH 3/7] Fix mercurial test

---
 testing/test_mercurial.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/testing/test_mercurial.py b/testing/test_mercurial.py
index 1b35d11c..38f82211 100644
--- a/testing/test_mercurial.py
+++ b/testing/test_mercurial.py
@@ -19,6 +19,11 @@
 )
 
 
+def _write_pyproject_config(directory: Path, enable_find_files: bool) -> None:
+    with open(directory / "pyproject.toml", "wt") as fh:
+        fh.write(f"[project]\nname = \"test\"\n[tool.setuptools_scm]\nenable_find_files = {str(enable_find_files).lower()}\n")
+
+
 @pytest.fixture
 def wd(wd: WorkDir) -> WorkDir:
     wd("hg init")
@@ -71,6 +76,7 @@ def test_find_files_stop_at_root_hg(
     # issue 251
     wd.add_and_commit()
     monkeypatch.chdir(project)
+    _write_pyproject_config(project, True)
     assert setuptools_scm._file_finders.find_files() == ["setup.cfg"]
 
 

From 62b83ab0f232f6be03da3bff3cbca91ed689014c Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Wed, 24 May 2023 02:58:38 +0000
Subject: [PATCH 4/7] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 testing/test_mercurial.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/testing/test_mercurial.py b/testing/test_mercurial.py
index 38f82211..38d3267d 100644
--- a/testing/test_mercurial.py
+++ b/testing/test_mercurial.py
@@ -20,8 +20,10 @@
 
 
 def _write_pyproject_config(directory: Path, enable_find_files: bool) -> None:
-    with open(directory / "pyproject.toml", "wt") as fh:
-        fh.write(f"[project]\nname = \"test\"\n[tool.setuptools_scm]\nenable_find_files = {str(enable_find_files).lower()}\n")
+    with open(directory / "pyproject.toml", "w") as fh:
+        fh.write(
+            f'[project]\nname = "test"\n[tool.setuptools_scm]\nenable_find_files = {str(enable_find_files).lower()}\n'
+        )
 
 
 @pytest.fixture

From 1fabd66670c28e1c5071c6a51eb89e64a2f5fc71 Mon Sep 17 00:00:00 2001
From: David Ware <david.ware@netvalue.nz>
Date: Wed, 24 May 2023 15:00:04 +1200
Subject: [PATCH 5/7] fix style, move test helper method.

---
 src/setuptools_scm/_file_finders/__init__.py |  1 -
 testing/conftest.py                          | 10 ++++++++++
 testing/test_file_finder.py                  | 17 +++++------------
 testing/test_git.py                          | 17 +++++------------
 testing/test_mercurial.py                    | 10 ++--------
 5 files changed, 22 insertions(+), 33 deletions(-)

diff --git a/src/setuptools_scm/_file_finders/__init__.py b/src/setuptools_scm/_file_finders/__init__.py
index f8983efa..f8725d89 100644
--- a/src/setuptools_scm/_file_finders/__init__.py
+++ b/src/setuptools_scm/_file_finders/__init__.py
@@ -3,7 +3,6 @@
 import itertools
 import os
 from typing import Callable
-from typing import Optional
 from typing import TYPE_CHECKING
 
 from .. import _config
diff --git a/testing/conftest.py b/testing/conftest.py
index ef5883c8..796db6c4 100644
--- a/testing/conftest.py
+++ b/testing/conftest.py
@@ -42,6 +42,16 @@ def pytest_addoption(parser: Any) -> None:
     )
 
 
+def write_pyproject_config(directory: Path, enable_find_files: bool) -> None:
+    with open(directory / "pyproject.toml", "w") as fh:
+        fh.write(
+            f'[project]\n'
+            f'name = "test"\n'
+            f'[tool.setuptools_scm]\n'
+            f'enable_find_files = {str(enable_find_files).lower()}\n'
+        )
+
+
 class DebugMode(contextlib.AbstractContextManager):  # type: ignore[type-arg]
     from setuptools_scm import _log as __module
 
diff --git a/testing/test_file_finder.py b/testing/test_file_finder.py
index 18be0d36..d067e65c 100644
--- a/testing/test_file_finder.py
+++ b/testing/test_file_finder.py
@@ -2,23 +2,16 @@
 
 import os
 import sys
-from pathlib import Path
 from typing import Generator
 from typing import Iterable
 
 import pytest
 
+from .conftest import write_pyproject_config
 from .wd_wrapper import WorkDir
 from setuptools_scm._file_finders import find_files
 
 
-def _write_pyproject_config(directory: Path, enable_find_files: bool) -> None:
-    with open(directory / "pyproject.toml", "w") as fh:
-        fh.write(
-            f'[project]\nname = "test"\n[tool.setuptools_scm]\nenable_find_files = {str(enable_find_files).lower()}\n'
-        )
-
-
 @pytest.fixture(params=["git", "hg"])
 def inwd(
     request: pytest.FixtureRequest, wd: WorkDir, monkeypatch: pytest.MonkeyPatch
@@ -50,7 +43,7 @@ def inwd(
     if request.node.get_closest_marker("skip_commit") is None:
         wd.add_and_commit()
     monkeypatch.chdir(wd.cwd)
-    _write_pyproject_config(wd.cwd, True)
+    write_pyproject_config(wd.cwd, True)
     yield wd
 
 
@@ -65,7 +58,7 @@ def test_basic(inwd: WorkDir) -> None:
 
 
 def test_basic_find_files_disabled(inwd: WorkDir) -> None:
-    _write_pyproject_config(inwd.cwd, False)
+    write_pyproject_config(inwd.cwd, False)
     assert find_files() == []
     assert find_files(".") == []
     assert find_files("adir") == []
@@ -225,7 +218,7 @@ def test_unexpanded_git_archival(wd: WorkDir, monkeypatch: pytest.MonkeyPatch) -
     # When substitutions in `.git_archival.txt` are not expanded, files should
     # not be automatically listed.
     monkeypatch.chdir(wd.cwd)
-    _write_pyproject_config(wd.cwd, True)
+    write_pyproject_config(wd.cwd, True)
     (wd.cwd / ".git_archival.txt").write_text("node: $Format:%H$", encoding="utf-8")
     (wd.cwd / "file1.txt").touch()
     assert find_files() == []
@@ -238,7 +231,7 @@ def test_archive(
     # When substitutions in `.git_archival.txt` are not expanded, files should
     # not be automatically listed.
     monkeypatch.chdir(wd.cwd)
-    _write_pyproject_config(wd.cwd, True)
+    write_pyproject_config(wd.cwd, True)
     sha = "a1bda3d984d1a40d7b00ae1d0869354d6d503001"
     (wd.cwd / archive_file).write_text(f"node: {sha}", encoding="utf-8")
     (wd.cwd / "data").mkdir()
diff --git a/testing/test_git.py b/testing/test_git.py
index 4eb26424..5e4a6437 100644
--- a/testing/test_git.py
+++ b/testing/test_git.py
@@ -16,7 +16,7 @@
 import pytest
 
 import setuptools_scm._file_finders
-from .conftest import DebugMode
+from .conftest import DebugMode, write_pyproject_config
 from .wd_wrapper import WorkDir
 from setuptools_scm import Configuration
 from setuptools_scm import git
@@ -33,13 +33,6 @@
 )
 
 
-def _write_pyproject_config(directory: Path, enable_find_files: bool) -> None:
-    with open(directory / "pyproject.toml", "w") as fh:
-        fh.write(
-            f'[project]\nname = "test"\n[tool.setuptools_scm]\nenable_find_files = {str(enable_find_files).lower()}\n'
-        )
-
-
 @pytest.fixture(name="wd")
 def wd(wd: WorkDir, monkeypatch: pytest.MonkeyPatch, debug_mode: DebugMode) -> WorkDir:
     debug_mode.disable()
@@ -105,7 +98,7 @@ def test_git_gone(wd: WorkDir, monkeypatch: pytest.MonkeyPatch) -> None:
 @pytest.mark.issue("https://github.com/pypa/setuptools_scm/issues/298")
 @pytest.mark.issue(403)
 def test_file_finder_no_history(wd: WorkDir, caplog: pytest.LogCaptureFixture) -> None:
-    _write_pyproject_config(wd.cwd, True)
+    write_pyproject_config(wd.cwd, True)
     file_list = git_find_files(str(wd.cwd))
     assert file_list == []
 
@@ -367,7 +360,7 @@ def test_git_archive_export_ignore(
     wd("git add test1.txt test2.txt")
     wd.commit()
     monkeypatch.chdir(wd.cwd)
-    _write_pyproject_config(wd.cwd, True)
+    write_pyproject_config(wd.cwd, True)
     assert setuptools_scm._file_finders.find_files(".") == [opj(".", "test1.txt")]
 
 
@@ -378,7 +371,7 @@ def test_git_archive_subdirectory(wd: WorkDir, monkeypatch: pytest.MonkeyPatch)
     wd("git add foobar")
     wd.commit()
     monkeypatch.chdir(wd.cwd)
-    _write_pyproject_config(wd.cwd, True)
+    write_pyproject_config(wd.cwd, True)
     assert setuptools_scm._file_finders.find_files(".") == [
         opj(".", "foobar", "test1.txt")
     ]
@@ -393,7 +386,7 @@ def test_git_archive_run_from_subdirectory(
     wd("git add foobar")
     wd.commit()
     monkeypatch.chdir(wd.cwd / "foobar")
-    _write_pyproject_config(wd.cwd / "foobar", True)
+    write_pyproject_config(wd.cwd / "foobar", True)
     assert setuptools_scm._file_finders.find_files(".") == [opj(".", "test1.txt")]
 
 
diff --git a/testing/test_mercurial.py b/testing/test_mercurial.py
index 38d3267d..7c451b30 100644
--- a/testing/test_mercurial.py
+++ b/testing/test_mercurial.py
@@ -6,6 +6,7 @@
 import pytest
 
 import setuptools_scm._file_finders
+from .conftest import write_pyproject_config
 from setuptools_scm import Configuration
 from setuptools_scm._run_cmd import has_command
 from setuptools_scm.hg import archival_to_version
@@ -19,13 +20,6 @@
 )
 
 
-def _write_pyproject_config(directory: Path, enable_find_files: bool) -> None:
-    with open(directory / "pyproject.toml", "w") as fh:
-        fh.write(
-            f'[project]\nname = "test"\n[tool.setuptools_scm]\nenable_find_files = {str(enable_find_files).lower()}\n'
-        )
-
-
 @pytest.fixture
 def wd(wd: WorkDir) -> WorkDir:
     wd("hg init")
@@ -78,7 +72,7 @@ def test_find_files_stop_at_root_hg(
     # issue 251
     wd.add_and_commit()
     monkeypatch.chdir(project)
-    _write_pyproject_config(project, True)
+    write_pyproject_config(project, True)
     assert setuptools_scm._file_finders.find_files() == ["setup.cfg"]
 
 

From cf4b57a632c9986397c10d00594f0a96259a527b Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Wed, 24 May 2023 03:11:50 +0000
Subject: [PATCH 6/7] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 testing/conftest.py | 6 +++---
 testing/test_git.py | 3 ++-
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/testing/conftest.py b/testing/conftest.py
index 796db6c4..2629f377 100644
--- a/testing/conftest.py
+++ b/testing/conftest.py
@@ -45,10 +45,10 @@ def pytest_addoption(parser: Any) -> None:
 def write_pyproject_config(directory: Path, enable_find_files: bool) -> None:
     with open(directory / "pyproject.toml", "w") as fh:
         fh.write(
-            f'[project]\n'
+            f"[project]\n"
             f'name = "test"\n'
-            f'[tool.setuptools_scm]\n'
-            f'enable_find_files = {str(enable_find_files).lower()}\n'
+            f"[tool.setuptools_scm]\n"
+            f"enable_find_files = {str(enable_find_files).lower()}\n"
         )
 
 
diff --git a/testing/test_git.py b/testing/test_git.py
index 5e4a6437..fad425ea 100644
--- a/testing/test_git.py
+++ b/testing/test_git.py
@@ -16,7 +16,8 @@
 import pytest
 
 import setuptools_scm._file_finders
-from .conftest import DebugMode, write_pyproject_config
+from .conftest import DebugMode
+from .conftest import write_pyproject_config
 from .wd_wrapper import WorkDir
 from setuptools_scm import Configuration
 from setuptools_scm import git

From 7b1911e5db8ad9ad4dcee72784478c5673ea8dfc Mon Sep 17 00:00:00 2001
From: David Ware <david.ware@netvalue.nz>
Date: Mon, 29 May 2023 16:27:56 +1200
Subject: [PATCH 7/7] Switch `enable_find_files` default to true (i.e. opt-out)

---
 README.rst                    | 7 ++++---
 src/setuptools_scm/_config.py | 2 +-
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/README.rst b/README.rst
index 702343b4..1384b2bd 100644
--- a/README.rst
+++ b/README.rst
@@ -7,9 +7,10 @@ or in a SCM managed file.
 
 Additionally ``setuptools_scm`` provides setuptools with a list of
 files that are managed by the SCM (i.e. it automatically adds all of
-the SCM-managed files to the sdist). This is opt-in, by supplying
-config argument: ``enable_find_files``. Once opted in unwanted files
-must be excluded by discarding them via ``MANIFEST.in``.
+the SCM-managed files to the sdist). Unwanted files must be excluded
+by discarding them via ``MANIFEST.in``. It is also possible to
+opt-out of this behavior by setting the ``enable_find_files`` config
+argument to false.
 
 ``setuptools_scm`` supports the following scm out of the box:
 
diff --git a/src/setuptools_scm/_config.py b/src/setuptools_scm/_config.py
index d34e1e47..d7dbf916 100644
--- a/src/setuptools_scm/_config.py
+++ b/src/setuptools_scm/_config.py
@@ -90,7 +90,7 @@ class Configuration:
     dist_name: str | None = None
     version_cls: type[_VersionT] = _Version
     search_parent_directories: bool = False
-    enable_find_files: bool = False
+    enable_find_files: bool = True
 
     parent: _t.PathT | None = None