remove version file

CMakeLists.txt

@@ -1,17 +1,38 @@
 cmake_minimum_required(VERSION 3.16 FATAL_ERROR)
 project(openmc C CXX)
 
-# Read the version information from version.txt
-file(READ "version.txt" VERSION_STRING)
-
-# Strip any whitespace
-string(STRIP "${VERSION_STRING}" VERSION_STRING)
+# Try to get the version from git describe
+if(EXISTS "${CMAKE_SOURCE_DIR}/.git")
+    execute_process(
+        COMMAND git describe --tags --match "*[0-9]*"
+        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+        OUTPUT_VARIABLE VERSION_STRING
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+else()
+  set(GIT_ARCHIVAL_FILE "${CMAKE_SOURCE_DIR}/.git_archival.txt")
+  if(EXISTS "${GIT_ARCHIVAL_FILE}")
+      file(READ "${GIT_ARCHIVAL_FILE}" GIT_ARCHIVAL_CONTENT)
+
+      # Extract the describe-name line
+      string(REGEX MATCH "describe-name: ([^\\n]+)" VERSION_STRING "${GIT_ARCHIVAL_CONTENT}")
+
+      # If a match is found, extract the actual version
+      if(VERSION_STRING MATCHES "describe-name: (.*)")
+          set(VERSION_STRING "${CMAKE_MATCH_1}")
+      else()
+          message(FATAL_ERROR "Could not extract version from .git_archival.txt")
+      endif()
+  else()
+      message(FATAL_ERROR "Neither git describe nor .git_archival.txt is available for versioning.")
+  endif()
+endif()
 
-# Match version format and capture the main version part
+# Ensure the version string matches a standard format
 if(VERSION_STRING MATCHES "^([0-9]+\\.[0-9]+\\.[0-9]+)([-\\.]dev[0-9]*)?$")
-    set(VERSION_NO_SUFFIX "${CMAKE_MATCH_1}")
+  set(VERSION_NO_SUFFIX "${CMAKE_MATCH_1}")
 else()
-    message(FATAL_ERROR "Invalid version format in version.txt: ${VERSION_STRING}")
+  message(FATAL_ERROR "Invalid version format: ${VERSION_STRING}")
 endif()
 
 # Set OpenMC version

docs/source/conf.py

@@ -68,26 +68,14 @@
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
-def get_version_info():
-    """Read the version information from version.txt"""
-    version_file = os.path.join(os.path.dirname(__file__), '..', '..', 'version.txt')
-    with open(version_file, 'r') as f:
-        version_string = f.read().strip()
-
-    # Check for the presence of a development suffix (e.g., -dev or .dev)
-    if version_string.endswith(('-dev', '.dev')):
-        version_parts = version_string.split('-')[0].split('.')
-        release = version_string
-    else:
-        version_parts = version_string.split('.')
-        release = version_string
-
-    version = ".".join(version_parts[:2])  # The short X.Y version.
-
-    return version, release
-
-# Get version and release from version.txt
-version, release = get_version_info()
+
+import openmc
+
+# The short X.Y version.
+version = ".".join(openmc.__version__.split('.')[:2])
+
+# The full version, including alpha/beta/rc tags.
+release = openmc.__version__
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools", "wheel"]
+requires = ["setuptools", "setuptools-scm", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [project]
@@ -58,9 +58,6 @@ Documentation = "https://docs.openmc.org"
 Repository = "https://github.com/openmc-dev/openmc"
 Issues = "https://github.com/openmc-dev/openmc/issues"
 
-[tool.setuptools.dynamic]
-version = {file = "version.txt"}
-
 [tool.setuptools.packages.find]
 include = ['openmc*', 'scripts*']
 exclude = ['tests*']
@@ -70,6 +67,8 @@ exclude = ['tests*']
 "openmc.data" = ["*.txt", "*.DAT", "*.json", "*.h5"]
 "openmc.lib" = ["libopenmc.dylib", "libopenmc.so"]
 
+[tool.setuptools_scm]
+
 [project.scripts]
 openmc-ace-to-hdf5 = "scripts.openmc_ace_to_hdf5:main"
 openmc-plot-mesh-tally = "scripts.openmc_plot_mesh_tally:main"