Index: cclib/.github/workflows/cclib_docs_push.yml
===================================================================
--- cclib.orig/.github/workflows/cclib_docs_push.yml	2025-09-20 14:33:51.000000000 +0200
+++ cclib/.github/workflows/cclib_docs_push.yml	2025-09-20 14:35:16.373517740 +0200
@@ -25,10 +25,6 @@
           apt-get update && apt-get install -y openssh-client
       - name: Checkout
         uses: actions/checkout@v4
-        with:
-          # so versioningit can figure out the version
-          fetch-depth: 0
-          fetch-tags: true
       - name: Allow repo access (see https://github.com/actions/checkout/issues/760)
         run: |
           git config --global --add safe.directory /__w/cclib/cclib
Index: cclib/.gitignore
===================================================================
--- cclib.orig/.gitignore	2025-09-20 14:33:51.000000000 +0200
+++ cclib/.gitignore	2025-09-20 14:35:17.914472592 +0200
@@ -12,4 +12,3 @@
 .DS_Store
 venv
 .idea
-cclib/_version.py
Index: cclib/MANIFEST.in
===================================================================
--- cclib.orig/MANIFEST.in	2025-09-20 14:33:51.000000000 +0200
+++ /dev/null	1970-01-01 00:00:00.000000000 +0000
@@ -1,5 +0,0 @@
-include ANNOUNCE
-include THANKS
-graft tools
-prune test
-global-exclude *.py[cod]
Index: cclib/cclib/__init__.py
===================================================================
--- cclib.orig/cclib/__init__.py	2025-09-20 14:33:51.000000000 +0200
+++ cclib/cclib/__init__.py	2025-09-20 14:35:17.914888310 +0200
@@ -17,7 +17,7 @@
 as well as example methods that take parsed data as input.
 """
 
-from cclib._version import __version__
+__version__ = "1.8.1"
 
 # isort: off
 from cclib import parser, progress, method, bridge, io
Index: cclib/manifest.py
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ cclib/manifest.py	2025-09-20 14:35:17.915072878 +0200
@@ -0,0 +1,26 @@
+# Copyright (c) 2024, the cclib development team
+#
+# This file is part of cclib (http://cclib.github.io) and is distributed under
+# the terms of the BSD 3-Clause License.
+
+"""Create a MANIFEST file for distributing soruces with distutils."""
+
+import glob
+import os
+from pathlib import Path
+
+files = ["ANNOUNCE", "CHANGELOG", "LICENSE", "README.md", "THANKS"]
+files += ["pyproject.toml", "setup.py"]
+
+source = "cclib"
+files.extend([os.path.join(source, fname) for fname in ["__init__.py", "py.typed"]])
+
+folders = ["bridge", "io", "method", "parser", "progress"]
+for folder in folders:
+    files.extend(glob.glob(os.path.join(source, folder, "*.py")))
+
+for f in files:
+    if not os.path.isfile(f):
+        print(f"{f} does not exist")
+
+Path("MANIFEST").write_text("\n".join(files), encoding="utf-8")
Index: cclib/pyproject.toml
===================================================================
--- cclib.orig/pyproject.toml	2025-09-20 14:33:51.000000000 +0200
+++ cclib/pyproject.toml	2025-09-20 14:35:17.915412303 +0200
@@ -1,6 +1,6 @@
 [project]
 name = "cclib"
-dynamic = ["version"]
+version = "1.8.1"
 description = "parsers and algorithms for computational chemistry"
 readme = "README.md"
 authors = [
@@ -64,7 +64,7 @@
 all = ["cclib[bridges]"]
 
 [build-system]
-requires = ["setuptools >= 61.0", "versioningit~=2.0"]
+requires = ["setuptools >= 61.0"]
 build-backend = "setuptools.build_meta"
 
 [tool.setuptools]
@@ -170,16 +170,3 @@
     "common",
 ]
 ignore_missing_imports = true
-
-[tool.versioningit.format]
-method = {module = "versioningit_override", value = "cclib_format", module-dir = "tools"}
-
-[tool.versioningit.template-fields.version-tuple]
-pep440 = true
-
-[tool.versioningit.vcs]
-method = "git"
-match = ["v*"]
-
-[tool.versioningit.write]
-file = "cclib/_version.py"
Index: cclib/tools/versioningit_override.py
===================================================================
--- cclib.orig/tools/versioningit_override.py	2025-09-20 14:32:05.586269271 +0200
+++ /dev/null	1970-01-01 00:00:00.000000000 +0000
@@ -1,54 +0,0 @@
-# Copyright (c) 2024, the cclib development team
-#
-# This file is part of cclib (http://cclib.github.io) and is distributed under
-# the terms of the BSD 3-Clause License.
-from os import getenv
-from typing import Any, Dict
-
-from versioningit import VCSDescription
-from versioningit.basics import DEFAULT_FORMATS
-
-_ENVVARNAME = "VERSIONINGIT_FOR_PACKAGE_INDEX"
-
-
-def cclib_format(
-    *, description: VCSDescription, base_version: str, next_version: str, params: Dict[str, Any]
-) -> str:
-    """Override the formation of the version string created by versioningit.
-
-    The default version strings are not suitable for uploading to (Test)PyPI,
-    which does not accept 'local' PEP 440 strings.  If the environment
-    variable 'VERSIONINGIT_FOR_PACKAGE_INDEX' is set to a truthy value, a
-    simplified version string is formed that counts the number of commits
-    since the last tag.  This is safe since we only push to TestPyPI on
-    commits (merges) to the default branch, and pushing to PyPI only happens
-    for tags when the base version is used and this code is never even
-    executed.  Because of this and it only making sense to run with this
-    setting in continuous integration, 'dirty' builds are not allowed.
-
-    When building normally, the version strings are the defaults but do not
-    include mention of the VCS used (Git).
-    """
-    state = description.state
-    assert state in {"distance", "dirty", "distance-dirty"}
-
-    if getenv(_ENVVARNAME, "False").lower() in ("true", "1", "t"):
-        fmt_distance = "{base_version}.post{distance}"
-        if state != "distance":
-            raise RuntimeError("dirty state doesn't make sense when building for a package index")
-    else:
-        # Default but missing {vcs} before {rev}
-        fmt_distance = "{base_version}.post{distance}+{rev}"
-        # Default
-        fmt_dirty = DEFAULT_FORMATS["dirty"]
-        # Default but missing {vcs} before {rev}
-        fmt_distance_dirty = "{base_version}.post{distance}+{rev}.d{build_date:%Y%m%d}"
-
-    if state == "distance":
-        fmt = fmt_distance
-    elif state == "dirty":
-        fmt = fmt_dirty
-    elif state == "distance-dirty":
-        fmt = fmt_distance_dirty
-
-    return fmt.format_map({**description.fields, "base_version": base_version})