gnu: Add onnx-for-torch2.

* gnu/packages/machine-learning.scm (onnx-for-torch2): New variable.
* gnu/packages/patches/onnx-1.13.1-use-system-googletest.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

Change-Id: I8a46b9a8096a33bcf949bc4f5d497e22902ab301

gnu/packages/machine-learning.scm

@@ -1214,6 +1214,29 @@ an extensible computation graph model, as well as definitions of built-in
 operators and standard data types.")
     (license license:expat)))
 
+(define-public onnx-for-torch2
+  (package
+    (inherit onnx)
+    (name "onnx")
+    (version "1.13.1")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/onnx/onnx")
+                    (commit (string-append "v" version))))
+              (sha256
+               (base32
+                "16967dbq2j40diqd0s37r19llsab8q8vbxkg1ppgy0p9fpdhfhyp"))
+              (file-name (git-file-name name version))
+              (patches (search-patches "onnx-1.13.1-use-system-googletest.patch"
+                                       "onnx-shared-libraries.patch"))
+              (modules '((guix build utils)))
+              (snippet
+               '(begin
+                  (delete-file-recursively "third_party")
+                  (substitute* "onnx/backend/test/runner/__init__.py"
+                    (("urlretrieve\\(.*") "raise unittest.SkipTest('Skipping download')\n"))))))))
+
 (define-public python-onnx
   ;; This used to be called "python-onnx" because it provided nothing but
   ;; Python bindings.  The package now provides shared libraries and C++