replace usages of pkg_resources with importlib.metadata

add change log entry

CHANGELOG.md

@@ -6,6 +6,8 @@
 
 - rename (fix typo) argument to `lcs_child_in_parent` in `CoordinateSystemManager.add_cs`  \[{pull}`936`\].
 
+- replace usages of ``pkg_resources`` with ``importlib.metadata`` [#941]
+
 ### Dependencies
 
 - pin `weldx-widgets>=0.2.3` for viz \[{pull}`939`\].

weldx/config.py

@@ -5,7 +5,7 @@
 from pathlib import Path
 
 import asdf
-import pkg_resources
+import importlib.metadata
 import yaml
 from asdf.config import ResourceMappingProxy
 from asdf.versioning import AsdfVersion, split_tag_version
@@ -175,7 +175,7 @@ def enable_quality_standard(name: str, version: AsdfVersion | str = None):
     @staticmethod
     def load_installed_standards():
         """Load all standards that are installed to the active virtual environment."""
-        for entry_point in pkg_resources.iter_entry_points("weldx.standard"):
+        for entry_point in importlib.metadata.entry_points()["weldx.standard"]:
             standards = entry_point.load()()
             if not isinstance(standards, list):
                 standards = [standards]

weldx/tests/_helpers.py

@@ -4,7 +4,7 @@
 
 import numpy as np
 import pint
-from pkg_resources import get_distribution
+import importlib.metadata
 
 from weldx.constants import Q_
 from weldx.geometry import _vector_is_close as vector_is_close
@@ -130,7 +130,7 @@ def matrix_is_close(mat_a, mat_b, abs_tol=1e-9) -> bool:
         return False
 
     atol_unit = 1.0
-    if isinstance(mat_b, pint.Quantity) and get_distribution("pint").version >= "0.21":
+    if isinstance(mat_b, pint.Quantity) and tuple(int(part) for part in importlib.metadata.version("pint").split(".")) >= (0, 21):
         atol_unit = mat_b.u
 
     return np.all(np.isclose(mat_a, mat_b, atol=abs_tol * atol_unit)).__bool__()

weldx/tests/transformations/_util.py

@@ -3,7 +3,7 @@
 from typing import Any
 
 import numpy as np
-from pkg_resources import get_distribution
+import importlib.metadata
 from xarray import DataArray
 
 import weldx.transformations as tf
@@ -79,7 +79,7 @@ def check_coordinate_system(
     )
 
     atol_unit = 1.0
-    if get_distribution("pint").version >= "0.21":
+    if tuple(int(part) for part in importlib.metadata.version("pint").split(".")) >= (0, 21):
         atol_unit = coordinates_expected.u
 
     assert np.allclose(