Fix broken link to python doc (#564)

Apply the same change as rapidsai/cuml#6202 to fix Python links to source code.
Closes #533

Authors:
  - Micka (https://github.com/lowener)
  - Corey J. Nolet (https://github.com/cjnolet)

Approvers:
  - Corey J. Nolet (https://github.com/cjnolet)

URL: #564

Author: lowener

docs/source/conf.py

@@ -198,7 +198,7 @@ def setup(app):
 linkcode_resolve = make_linkcode_resolve(
     "cuvs",
     "https://github.com/rapidsai/cuvs/"
-    "blob/{revision}/python/cuvs/cuvs/"
+    "blob/{revision}/python/cuvs/"
     "{package}/{path}#L{lineno}",
 )
 

docs/source/sphinxext/github_link.py

@@ -1,5 +1,20 @@
 # This contains code with copyright by the scikit-learn project, subject to the
 # license in /thirdparty/LICENSES/LICENSE.scikit_learn
+#
+# Copyright (c) 2024-2025, NVIDIA CORPORATION.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
 
 import inspect
 import os
@@ -101,10 +116,9 @@ def _linkcode_resolve(domain, info, package, url_fmt, revision):
         else:
             return
     else:
-        # Test if we are absolute or not (pyx are relative)
-        if (not os.path.isabs(fn)):
-            # Should be relative to docs right now
-            fn = os.path.abspath(os.path.join("..", "python", fn))
+        if fn.endswith(".pyx"):
+            sp_path = next(x for x in sys.path if re.match(".*site-packages$", x))
+            fn = fn.replace("/opt/conda/conda-bld/work/python/cuvs", sp_path)
 
         # Convert to relative from module root
         fn = os.path.relpath(fn,