Merge branch 'finalize_distribution_options_various_data' into finali…

…ze_distribution_options_improvements

changelog.d/2034.change.rst

@@ -0,0 +1,4 @@
+Now ''setuptools.finalize_distribution_options'' hook allows the implementers to ast setuptools to provide them various information by adding a parameter with a certain name into the function signature.
+Old behavior is also supported.
+
+For the list of args names see ''DistributionoptionsFinalizationRemap'' in ''dist.py''.

setuptools/dist.py

@@ -773,6 +773,7 @@ def fetch_build_eggs(self, requires):
             pkg_resources.working_set.add(dist, replace=True)
         return resolved_dists
 
+    optsFinalizationRemap = None  # set later
     shouldCallFinHookCheckers = {
         'dist': lambda dist, fdohac, ep: hasattr(dist, ep.name),
         'toml': lambda dist, fdohac, ep: bool(fdohac.pyProjectToml) and ep.name in fdohac.pyProjectToml,
@@ -827,6 +828,23 @@ def by_order(hook):
 
         fdohac = FinalizeDistributionOptionsHookArgsCache()
 
+        def constructArgsForAFunc(f, ep, fdohac):
+            if sys.version_info.major >= 3:
+                p = inspect.getfullargspec(f).args
+            else:
+                p = inspect.getargspec(f)[0]
+
+            if len(p) == 1:
+                firstParam = p[0]
+                if firstParam not in self.optsFinalizationRemap:
+                    return [self]
+
+            args = []
+            for parN in p:
+                a = self.optsFinalizationRemap[parN](self, ep, fdohac, parN)
+                args.append(a)
+            return args
+
         eps = pkg_resources.iter_entry_points(hook_key)
 
         for ep in sorted(eps, key=by_order):
@@ -844,7 +862,18 @@ def by_order(hook):
                 continue
 
             try:
-                f(self)
+                args = constructArgsForAFunc(f, ep, fdohac)
+            except Exception as ex:
+                warnings.warn(
+                    repr(ep) + " is incompatible to the current"
+                    " version of setuptools: " + str(ex)
+                )
+                continue
+
+            f(*args)
+
+            try:
+                f(*args)
             except BaseException as ex:
                 if not isFatal:
                     warnings.warn("Error when executing entry point:" + str(ex))