feat: no entrypoint registration required in tree

Signed-off-by: John Andersen <[email protected]>

setup.py

@@ -69,26 +69,6 @@
             "cve-bin-tool = cve_bin_tool.cli:main",
             "csv2cve = cve_bin_tool.csv2cve:main",
         ],
-        "cve_bin_tool.checker": [
-            "{} = cve_bin_tool.checkers.{}:{}".format(
-                filename.replace(".py", ""),
-                filename.replace(".py", ""),
-                "".join(
-                    (filename.replace(".py", "") + " checker")
-                    .replace("_", " ")
-                    .title()
-                    .split()
-                ),
-            )
-            for filename in os.listdir(
-                os.path.join(
-                    os.path.abspath(os.path.dirname(__file__)),
-                    "cve_bin_tool",
-                    "checkers",
-                )
-            )
-            if filename.endswith(".py") and "__init__" not in filename
-        ],
     },
 )
 

test/test_checkers.py

@@ -5,6 +5,7 @@
 
 import re
 import sys
+import importlib
 
 import pytest
 
@@ -16,6 +17,19 @@
     from importlib import metadata as importlib_metadata
 else:
     import importlib_metadata
+if sys.version_info >= (3, 9):
+    import importlib.resources as resources
+else:
+    import importlib_resources as resources
+
+
+CHECKER_CLASSES = {
+    checker_path.stem: importlib.import_module(
+        f"cve_bin_tool.checkers.{checker_path.stem}"
+    ).Checker
+    for checker_path in resources.files("cve_bin_tool.checkers").iterdir()
+    if (checker_path.suffix == ".py" and not checker_path.name.startswith("__"))
+}
 
 Pattern = type(re.compile("", 0))
 
@@ -136,12 +150,8 @@ def setup_class(cls):
     )
     def test_filename_is(self, checker_name, file_name, expected_results):
         """Test a checker's filename detection"""
-        checkers = importlib_metadata.entry_points().select(
-            group="cve_bin_tool.checker"
-        )
-        for checker in checkers:
-            if checker.name == checker_name:
-                Checker = checker.load()
+        for i_checker_name, Checker in CHECKER_CLASSES.items():
+            if i_checker_name == checker_name:
                 checker = Checker()
 
                 result = checker.get_version("", file_name)