Adds build wrapper

MANIFEST.in

@@ -1,4 +1,4 @@
 recursive-include pynxtools/definitions/base_classes/ *.xml
 recursive-include pynxtools/definitions/applications/ *.xml
 recursive-include pynxtools/definitions/contributed_definitions/ *.xml
-include pynxtools/definitions/ *.xsd
+include pynxtools/definitions/*.xsd

pynxtools/_build_wrapper.py

@@ -0,0 +1,68 @@
+import os
+from glob import glob
+from subprocess import CalledProcessError, run
+from typing import Optional
+
+from setuptools import build_meta as _orig
+from setuptools.build_meta import *
+
+
+def get_vcs_version(tag_match="*[0-9]*") -> Optional[str]:
+    """
+    The version of the Nexus standard and the NeXus Definition language
+    based on git tags and commits
+    """
+    try:
+        return (
+            run(
+                ["git", "describe", "--tags", "--long", "--match", tag_match],
+                cwd=os.path.join(os.path.dirname(__file__), "definitions"),
+                check=True,
+                capture_output=True,
+            )
+            .stdout.decode("utf-8")
+            .strip()
+        )
+    except (FileNotFoundError, CalledProcessError):
+        return None
+
+
+def _write_version_to_metadata(metadata_directory: str, dist_dir: str = None):
+    with open(
+        os.path.join(metadata_directory, dist_dir, "nexus-version.txt")
+        if dist_dir is not None
+        else os.path.join(metadata_directory, "nexus-version.txt"),
+        "w+",
+        encoding="utf-8",
+    ) as file:
+        file.write(get_vcs_version())
+
+
+def prepare_metadata_for_build_editable(metadata_directory, config_settings=None):
+    dist_dir = _orig.prepare_metadata_for_build_wheel(
+        metadata_directory, config_settings
+    )
+    _write_version_to_metadata(metadata_directory, dist_dir)
+    return dist_dir
+
+
+def prepare_metadata_for_build_wheel(metadata_directory, config_settings=None):
+    dist_dir = _orig.prepare_metadata_for_build_wheel(
+        metadata_directory, config_settings
+    )
+    _write_version_to_metadata(metadata_directory, dist_dir)
+    return dist_dir
+
+
+def build_editable(wheel_directory, config_settings=None, metadata_directory=None):
+    # _write_version_to_metadata(metadata_directory)
+    ret = _orig.build_editable(wheel_directory, config_settings, metadata_directory)
+
+    return ret
+
+
+def build_wheel(wheel_directory, config_settings=None, metadata_directory=None):
+    # _write_version_to_metadata(metadata_directory)
+    ret = _orig.build_wheel(wheel_directory, config_settings, metadata_directory)
+
+    return ret

pyproject.toml

@@ -1,6 +1,7 @@
 [build-system]
 requires = ["setuptools>=64.0.1", "setuptools-scm[toml]>=6.2"]
-build-backend = "setuptools.build_meta"
+backend-path = ["pynxtools"]
+build-backend = "_build_wrapper"
 
 [project]
 name = "pynxtools"
@@ -10,7 +11,7 @@ authors = [
 ]
 description = "Extend NeXus for materials science experiment and serve as a NOMAD parser implementation for NeXus."
 readme = "README.md"
-license = { file = "LICENSE.txt" }
+license = { file = "LICENSE" }
 requires-python = ">=3.8,<3.11"
 classifiers = [
     "Programming Language :: Python :: 3.8",