Replace versioneer with hard-coded version

.coveragerc

@@ -1,2 +0,0 @@
-[report]
-omit = src/czml3/_version.py

.gitattributes

@@ -1 +0,0 @@
-src/czml3/_version.py export-subst

MANIFEST.in

@@ -1,7 +1,4 @@
 include LICENSE
 
-include versioneer.py
-include src/czml3/_version.py
-
 graft src
 global-exclude *.py[cod] __pycache__ *.so

mypy.ini

@@ -22,13 +22,6 @@ no_implicit_reexport = True
 [mypy-czml3]
 disallow_untyped_defs = True
 
-# Ignore errors for versioneer-related code
-[mypy-versioneer]
-ignore_errors = True
-
-[mypy-czml3._version]
-ignore_errors = True
-
 # Ignore certain missing imports
 [mypy-astropy.*]
 ignore_missing_imports = True

pyproject.toml

@@ -10,9 +10,6 @@ select = [
     "C","W","B9"
 ]
 
-[tool.ruff]
-extend-exclude = ["versioneer.py", "_version.py"]
-
 [tool.tox]
 legacy_tox_ini = """
     [tox]

setup.cfg

@@ -58,15 +58,3 @@ dev =
     tox
     build
     ruff
-
-# See the docstring in versioneer.py for instructions. Note that you must
-# re-run 'versioneer.py setup' after changing this section, and commit the
-# resulting files.
-
-[versioneer]
-VCS = git
-style = pep440-post
-versionfile_source = src/czml3/_version.py
-versionfile_build = czml3/_version.py
-tag_prefix = v
-parentdir_prefix = czml3-

setup.py

@@ -1,5 +1,6 @@
 from setuptools import setup
 
-import versioneer
+with open("src/czml3/version.txt") as f:
+    version = f.read()
 
-setup(version=versioneer.get_version(), cmdclass=versioneer.get_cmdclass())
+setup(version=version, package_data={"": ["czml3/version.txt"]})

src/czml3/__init__.py

@@ -1,7 +1,6 @@
-from ._version import get_versions
 from .core import CZML_VERSION, Document, Packet, Preamble
 
-__version__ = get_versions()["version"]
-del get_versions
+with open("src/czml3/version.txt") as f:
+    __version__ = f.read()
 
 __all__ = ["Document", "Preamble", "Packet", "CZML_VERSION"]