gnu: Add python-pytorch-for-r-torch.

* gnu/packages/patches/python-pytorch-1.9.0-system-libraries.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/machine-learning.scm (python-pytorch-for-r-torch): New variable.

gnu/local.mk

@@ -1741,6 +1741,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/python-pytest-asyncio-python-3.8.patch	\
   %D%/packages/patches/python-pytorch-runpath.patch		\
   %D%/packages/patches/python-pytorch-system-libraries.patch	\
+  %D%/packages/patches/python-pytorch-1.9.0-system-libraries.patch \
   %D%/packages/patches/python-robotframework-source-date-epoch.patch \
   %D%/packages/patches/python-seaborn-kde-test.patch		\
   %D%/packages/patches/python-seaborn-2690.patch		\

gnu/packages/machine-learning.scm

@@ -3034,6 +3034,53 @@ (define-public python-pytorch
 Note: currently this package does not provide GPU support.")
     (license license:bsd-3)))
 
+(define-public python-pytorch-for-r-torch
+  (package
+    (inherit python-pytorch)
+    (name "python-pytorch")
+    (version "1.9.0")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/pytorch/pytorch")
+                    (commit (string-append "v" version))
+                    (recursive? #t)))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0cznsh68hwk5761gv7iijb4g6jgjpvs3bbixwpzzmkbkbn2q96c1"))
+              (patches (search-patches "python-pytorch-1.9.0-system-libraries.patch"
+                                       "python-pytorch-runpath.patch"))
+              (modules '((guix build utils)))
+              (snippet
+               '(begin
+                  ;; XXX: Let's be clear: this package is a bundling fest.  We
+                  ;; delete as much as we can, but there's still a lot left.
+                  (for-each (lambda (directory)
+                              (delete-file-recursively
+                               (string-append "third_party/" directory)))
+                            '("benchmark" "cpuinfo" "eigen"
+
+                              ;; FIXME: QNNPACK (of which XNNPACK is a fork)
+                              ;; needs these.
+                              ;; "FP16" "FXdiv" "gemmlowp" "psimd"
+
+                              "gloo" "googletest" "ios-cmake" "NNPACK"
+                              "onnx" "protobuf" "pthreadpool"
+                              "pybind11" "python-enum" "python-peachpy"
+                              "python-six" "tbb" "XNNPACK" "zstd"))
+
+                  ;; Adjust references to the onnx-optimizer headers.
+                  (substitute* "caffe2/onnx/backend.cc"
+                    (("onnx/optimizer/")
+                     "onnxoptimizer/"))))))
+    (arguments
+     (substitute-keyword-arguments (package-arguments python-pytorch)
+       ((#:phases phases '%standard-phases)
+        `(modify-phases ,phases
+           ;; No module named 'onnx.optimizer'
+           (delete 'sanity-check)))))))
+
 (define-public python-hmmlearn
   (package
     (name "python-hmmlearn")

gnu/packages/patches/python-pytorch-1.9.0-system-libraries.patch

@@ -0,0 +1,139 @@
+Use our own googletest rather than the bundled one.
+Get NNPACK to use our own PeachPy rather than the bundled one.
+
+diff --git a/cmake/Dependencies.cmake b/cmake/Dependencies.cmake
+index 5d57b9ca78..620cca4e60 100644
+--- a/cmake/Dependencies.cmake
++++ b/cmake/Dependencies.cmake
+@@ -644,11 +644,6 @@ if(BUILD_TEST OR BUILD_MOBILE_BENCHMARK OR BUILD_MOBILE_TEST)
+   # this shouldn't be necessary anymore.
+   get_property(INC_DIR_temp DIRECTORY PROPERTY INCLUDE_DIRECTORIES)
+   set_property(DIRECTORY PROPERTY INCLUDE_DIRECTORIES "")
+-  add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/../third_party/googletest)
+-  set_property(DIRECTORY PROPERTY INCLUDE_DIRECTORIES ${INC_DIR_temp})
+-
+-  include_directories(BEFORE SYSTEM ${CMAKE_CURRENT_LIST_DIR}/../third_party/googletest/googletest/include)
+-  include_directories(BEFORE SYSTEM ${CMAKE_CURRENT_LIST_DIR}/../third_party/googletest/googlemock/include)
+ 
+   # We will not need to test benchmark lib itself.
+   set(BENCHMARK_ENABLE_TESTING OFF CACHE BOOL "Disable benchmark testing as we don't need it.")
+@@ -1485,7 +1480,7 @@ if(CAFFE2_CMAKE_BUILDING_WITH_MAIN_REPO AND NOT INTERN_DISABLE_ONNX)
+     endif()
+     set_property(TARGET onnx_proto PROPERTY IMPORTED_LOCATION ${ONNX_PROTO_LIBRARY})
+     message("-- Found onnx: ${ONNX_LIBRARY} ${ONNX_PROTO_LIBRARY}")
+-    list(APPEND Caffe2_DEPENDENCY_LIBS onnx_proto onnx)
++    list(APPEND Caffe2_DEPENDENCY_LIBS onnx_proto onnx onnx_optimizer)
+   endif()
+   include_directories(${FOXI_INCLUDE_DIRS})
+   list(APPEND Caffe2_DEPENDENCY_LIBS foxi_loader)
+
+diff --git a/caffe2/CMakeLists.txt b/caffe2/CMakeLists.txt
+index 50ebb224ce..5953d9ddf7 100644
+--- a/caffe2/CMakeLists.txt
++++ b/caffe2/CMakeLists.txt
+@@ -1632,7 +1632,7 @@ if(BUILD_TEST)
+         if(NOT MSVC)
+           add_executable(${test_name}_${CPU_CAPABILITY} "${test_src}" ../aten/src/ATen/native/quantized/affine_quantizer_base.cpp)
+           # TODO: Get rid of c10 dependency (which is only needed for the implementation of AT_ERROR)
+-          target_link_libraries(${test_name}_${CPU_CAPABILITY} c10 sleef gtest_main)
++          target_link_libraries(${test_name}_${CPU_CAPABILITY} c10 sleef gtest_main gtest)
+           if(USE_FBGEMM)
+             target_link_libraries(${test_name}_${CPU_CAPABILITY} fbgemm)
+           endif()
+@@ -1655,7 +1655,7 @@ if(BUILD_TEST)
+   foreach(test_src ${Caffe2_CPU_TEST_SRCS})
+     get_filename_component(test_name ${test_src} NAME_WE)
+     add_executable(${test_name} "${test_src}")
+-    target_link_libraries(${test_name} torch_library gtest_main)
++    target_link_libraries(${test_name} torch_library gtest_main gtest)
+     target_include_directories(${test_name} PRIVATE $<INSTALL_INTERFACE:include>)
+     target_include_directories(${test_name} PRIVATE $<BUILD_INTERFACE:${CMAKE_BINARY_DIR}/include>)
+     target_include_directories(${test_name} PRIVATE ${Caffe2_CPU_INCLUDE})
+@@ -1673,7 +1673,7 @@ if(BUILD_TEST)
+     foreach(test_src ${Caffe2_GPU_TEST_SRCS})
+       get_filename_component(test_name ${test_src} NAME_WE)
+       cuda_add_executable(${test_name} "${test_src}")
+-      target_link_libraries(${test_name} torch_library gtest_main)
++      target_link_libraries(${test_name} torch_library gtest_main gtest)
+       target_include_directories(${test_name} PRIVATE $<INSTALL_INTERFACE:include>)
+       target_include_directories(${test_name} PRIVATE ${Caffe2_CPU_INCLUDE})
+       add_test(NAME ${test_name} COMMAND $<TARGET_FILE:${test_name}>)
+@@ -1691,7 +1691,7 @@ if(BUILD_TEST)
+     foreach(test_src ${Caffe2_VULKAN_TEST_SRCS})
+       get_filename_component(test_name ${test_src} NAME_WE)
+       add_executable(${test_name} "${test_src}")
+-      target_link_libraries(${test_name} torch_library gtest_main)
++      target_link_libraries(${test_name} torch_library gtest_main gtest)
+       target_include_directories(${test_name} PRIVATE $<INSTALL_INTERFACE:include>)
+       target_include_directories(${test_name} PRIVATE ${Caffe2_CPU_INCLUDE})
+       add_test(NAME ${test_name} COMMAND $<TARGET_FILE:${test_name}>)
+@@ -1709,7 +1709,7 @@ if(BUILD_TEST)
+     foreach(test_src ${Caffe2_HIP_TEST_SRCS})
+       get_filename_component(test_name ${test_src} NAME_WE)
+       add_executable(${test_name} "${test_src}")
+-      target_link_libraries(${test_name} torch_library gtest_main)
++      target_link_libraries(${test_name} torch_library gtest_main gtest)
+       target_include_directories(${test_name} PRIVATE $<INSTALL_INTERFACE:include>)
+       target_include_directories(${test_name} PRIVATE ${Caffe2_CPU_INCLUDE} ${Caffe2_HIP_INCLUDE})
+       target_compile_options(${test_name} PRIVATE ${HIP_CXX_FLAGS})
+
+diff --git a/torch/lib/c10d/test/CMakeLists.txt b/torch/lib/c10d/test/CMakeLists.txt
+index b74d4b65f7..fc7c207505 100644
+--- a/torch/lib/c10d/test/CMakeLists.txt
++++ b/torch/lib/c10d/test/CMakeLists.txt
+@@ -16,24 +16,24 @@ function(c10d_add_test test_src)
+   add_test(NAME ${test_name} COMMAND $<TARGET_FILE:${test_name}>)
+ endfunction()
+ 
+-c10d_add_test(FileStoreTest.cpp c10d gtest_main)
+-c10d_add_test(TCPStoreTest.cpp c10d gtest_main)
++c10d_add_test(FileStoreTest.cpp c10d gtest_main gtest)
++c10d_add_test(TCPStoreTest.cpp c10d gtest_main gtest)
+ if(NOT WIN32)
+-  c10d_add_test(HashStoreTest.cpp c10d gtest_main)
++  c10d_add_test(HashStoreTest.cpp c10d gtest_main gtest)
+ endif()
+ 
+ if(USE_CUDA)
+   if(USE_C10D_GLOO)
+-    c10d_add_test(ProcessGroupGlooTest.cpp c10d c10d_cuda_test gtest_main)
+-    c10d_add_test(ProcessGroupGlooAsyncTest.cpp c10d c10d_cuda_test gtest_main)
++    c10d_add_test(ProcessGroupGlooTest.cpp c10d c10d_cuda_test gtest_main gtest)
++    c10d_add_test(ProcessGroupGlooAsyncTest.cpp c10d c10d_cuda_test gtest_main gtest)
+   endif()
+   if(USE_C10D_NCCL)
+-    c10d_add_test(ProcessGroupNCCLTest.cpp c10d c10d_cuda_test gtest_main)
++    c10d_add_test(ProcessGroupNCCLTest.cpp c10d c10d_cuda_test gtest_main gtest)
+     c10d_add_test(ProcessGroupNCCLErrorsTest.cpp c10d c10d_cuda_test
+-        gtest_main)
++        gtest_main gtest)
+   endif()
+ else()
+   if(USE_C10D_GLOO)
+-    c10d_add_test(ProcessGroupGlooTest.cpp c10d gtest_main)
++    c10d_add_test(ProcessGroupGlooTest.cpp c10d gtest_main gtest)
+   endif()
+ endif()
+
+diff --git a/cmake/External/nnpack.cmake b/cmake/External/nnpack.cmake
+index a41343cbb5..6075bdd0a4 100644
+--- a/cmake/External/nnpack.cmake
++++ b/cmake/External/nnpack.cmake
+@@ -40,7 +40,7 @@ endif()
+ # (3) Android, iOS, Linux, macOS - supported
+ ##############################################################################
+ 
+-if(ANDROID OR IOS OR ${CMAKE_SYSTEM_NAME} STREQUAL "Linux" OR ${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
++if(FALSE)
+   message(STATUS "Brace yourself, we are building NNPACK")
+   set(CAFFE2_THIRD_PARTY_ROOT ${PROJECT_SOURCE_DIR}/third_party)
+ 
+@@ -114,6 +114,5 @@ endif()
+ # (4) Catch-all: not supported.
+ ##############################################################################
+ 
+-message(WARNING "Unknown platform - I don't know how to build NNPACK. "
+-                "See cmake/External/nnpack.cmake for details.")
+-set(USE_NNPACK OFF)
++set(NNPACK_FOUND TRUE)
++set(USE_NNPACK ON)