Just stick to write_to for everything, and keep the setuptools_scm ve…

…rsion below 8 to stay compatible with python 3.6. Once we don't care about 3.6 compatibility anymore, we can upgrade to setuptools_scm and use version_file instead of write_to

pyproject.toml

@@ -23,3 +23,4 @@ include = ["eessi*"]
 [tool.setuptools_scm]
 version_scheme = "guess-next-dev"
 local_scheme = "node-and-date"
+write_to = "eessi/testsuite/_version.py"

setup.py

@@ -1,24 +1,7 @@
 import setuptools
 import pkg_resources
 
-
-# write_to got replaced by version_file starting from setuptools_scm v8.
-def get_setuptools_scm_version():
-    try:
-        scm_version = pkg_resources.get_distribution("setuptools_scm").version
-        return tuple(map(int, scm_version.split(".")[:2]))  # Convert version string to tuple, e.g., (8, 0)
-    except pkg_resources.DistributionNotFound:
-        return (0, 0)  # If setuptools_scm is not found, assume version 0.0
-
-
-scm_version = get_setuptools_scm_version()
-
-if scm_version >= (8, 0):
-    scm_arg_key = "version_file"
-else:
-    scm_arg_key = "write_to"
-
 setuptools.setup(
-    use_scm_version={scm_arg_key: "eessi/testsuite/_version.py"},
+    use_scm_version={'write_to': 'eessi/testsuite/_version.py'},
     setup_requires=['setuptools_scm'],
 )