diff '--color=auto' -ur pytorch-v2.13.0.orig/cmake/FileMirroring.cmake pytorch-v2.13.0/cmake/FileMirroring.cmake
--- pytorch-v2.13.0.orig/cmake/FileMirroring.cmake	2026-07-08 19:44:27.000000000 +0200
+++ pytorch-v2.13.0/cmake/FileMirroring.cmake	2026-07-09 19:10:35.586593642 +0200
@@ -11,7 +11,7 @@
 # <source>/torch, so the correct fallback is the project source directory
 # (the parent of torch/, torchgen/, tools/, etc.).
 if(NOT DEFINED SKBUILD_PLATLIB_DIR)
-  set(SKBUILD_PLATLIB_DIR "${PROJECT_SOURCE_DIR}")
+  set(SKBUILD_PLATLIB_DIR "torch")
 endif()
 
 # --- mirror_files_into_torchgen ---
@@ -39,7 +39,7 @@
 # on CUDA-enabled builds (cutlass submodule should be present).
 set(_cutedsl_src "${PROJECT_SOURCE_DIR}/third_party/cutlass/examples/python/CuTeDSL/blackwell/grouped_gemm.py")
 if(EXISTS "${_cutedsl_src}")
-  set(_cutedsl_dest "${SKBUILD_PLATLIB_DIR}/torch/_inductor/kernel/vendored_templates/cutedsl/kernels")
+  set(_cutedsl_dest "${SKBUILD_PLATLIB_DIR}/_inductor/kernel/vendored_templates/cutedsl/kernels")
   install(FILES "${_cutedsl_src}"
     DESTINATION "${_cutedsl_dest}"
     RENAME "cutedsl_grouped_gemm.py"
@@ -68,9 +68,9 @@
 )
 install(FILES
   "${PROJECT_SOURCE_DIR}/third_party/valgrind-headers/callgrind.h"
-  DESTINATION "${SKBUILD_PLATLIB_DIR}/torch/utils/benchmark/utils/valgrind_wrapper"
+  DESTINATION "${SKBUILD_PLATLIB_DIR}/utils/benchmark/utils/valgrind_wrapper"
 )
 install(FILES
   "${PROJECT_SOURCE_DIR}/third_party/valgrind-headers/valgrind.h"
-  DESTINATION "${SKBUILD_PLATLIB_DIR}/torch/utils/benchmark/utils/valgrind_wrapper"
+  DESTINATION "${SKBUILD_PLATLIB_DIR}/utils/benchmark/utils/valgrind_wrapper"
 )
diff '--color=auto' -ur pytorch-v2.13.0.orig/cmake/PackageData.cmake pytorch-v2.13.0/cmake/PackageData.cmake
--- pytorch-v2.13.0.orig/cmake/PackageData.cmake	2026-07-08 19:44:27.000000000 +0200
+++ pytorch-v2.13.0/cmake/PackageData.cmake	2026-07-09 19:05:24.726370882 +0200
@@ -18,7 +18,7 @@
 
 # Type stubs
 install(DIRECTORY "${TORCH_SRC_DIR}/"
-  DESTINATION "."
+  DESTINATION "torch"
   FILES_MATCHING
   PATTERN "*.pyi"
   PATTERN "py.typed"
@@ -31,7 +31,7 @@
 # (*.h files are copied from third_party/ by FileMirroring.cmake; the pattern
 # here picks them up if already present.)
 install(DIRECTORY "${TORCH_SRC_DIR}/utils/benchmark/utils/"
-  DESTINATION "utils/benchmark/utils"
+  DESTINATION "torch/utils/benchmark/utils"
   FILES_MATCHING PATTERN "*.cpp" PATTERN "*.h"
 )
 
@@ -39,37 +39,37 @@
 install(FILES
   "${TORCH_SRC_DIR}/utils/model_dump/skeleton.html"
   "${TORCH_SRC_DIR}/utils/model_dump/code.js"
-  DESTINATION "utils/model_dump"
+  DESTINATION "torch/utils/model_dump"
   OPTIONAL
 )
 install(DIRECTORY "${TORCH_SRC_DIR}/utils/model_dump/"
-  DESTINATION "utils/model_dump"
+  DESTINATION "torch/utils/model_dump"
   FILES_MATCHING PATTERN "*.mjs"
 )
 
 # Inductor data files
 install(FILES "${TORCH_SRC_DIR}/_inductor/script.ld"
-  DESTINATION "_inductor"
+  DESTINATION "torch/_inductor"
   OPTIONAL
 )
 install(DIRECTORY "${TORCH_SRC_DIR}/_inductor/codegen/"
-  DESTINATION "_inductor/codegen"
+  DESTINATION "torch/_inductor/codegen"
   FILES_MATCHING
   PATTERN "*.h"
   PATTERN "*.cpp"
 )
 install(DIRECTORY "${TORCH_SRC_DIR}/_inductor/kernel/flex/templates/"
-  DESTINATION "_inductor/kernel/flex/templates"
+  DESTINATION "torch/_inductor/kernel/flex/templates"
   FILES_MATCHING PATTERN "*.jinja"
 )
 install(DIRECTORY "${TORCH_SRC_DIR}/_inductor/kernel/templates/"
-  DESTINATION "_inductor/kernel/templates"
+  DESTINATION "torch/_inductor/kernel/templates"
   FILES_MATCHING PATTERN "*.jinja"
 )
 
 # Export serde data
 install(DIRECTORY "${TORCH_SRC_DIR}/_export/serde/"
-  DESTINATION "_export/serde"
+  DESTINATION "torch/_export/serde"
   FILES_MATCHING
   PATTERN "*.yaml"
   PATTERN "*.thrift"
@@ -77,18 +77,18 @@
 
 # AOTI runtime header
 install(FILES "${TORCH_SRC_DIR}/csrc/inductor/aoti_runtime/model.h"
-  DESTINATION "csrc/inductor/aoti_runtime"
+  DESTINATION "torch/csrc/inductor/aoti_runtime"
   OPTIONAL
 )
 
 # Generated testing Python module (gitignored so not picked up by scikit-build-core
 # package scanning; install explicitly so it ends up in the wheel).
 install(FILES "${TORCH_SRC_DIR}/testing/_internal/generated/annotated_fn_args.py"
-  DESTINATION "testing/_internal/generated"
+  DESTINATION "torch/testing/_internal/generated"
 )
 
 # Dynamo data
 install(FILES "${TORCH_SRC_DIR}/_dynamo/graph_break_registry.json"
-  DESTINATION "_dynamo"
+  DESTINATION "torch/_dynamo"
   OPTIONAL
 )
diff '--color=auto' -ur pytorch-v2.13.0.orig/torch/CMakeLists.txt pytorch-v2.13.0/torch/CMakeLists.txt
--- pytorch-v2.13.0.orig/torch/CMakeLists.txt	2026-07-09 17:59:49.547881126 +0200
+++ pytorch-v2.13.0/torch/CMakeLists.txt	2026-07-09 19:07:11.618125606 +0200
@@ -455,9 +455,9 @@
   # alongside the other import libs in torch/lib/, matching the layout that
   # setup.py used before _C moved to CMake.
   install(TARGETS _C
-    RUNTIME DESTINATION "."
-    LIBRARY DESTINATION "."
-    ARCHIVE DESTINATION "lib"
+    RUNTIME DESTINATION "torch"
+    LIBRARY DESTINATION "torch"
+    ARCHIVE DESTINATION "torch/lib"
   )
 endif()
 
@@ -488,7 +488,7 @@
 add_dependencies(torch_python gen_torch_version)
 # version.py is gitignored (generated), so scikit-build-core won't include it
 # via Python package collection. Install it explicitly via cmake instead.
-install(FILES "${TORCH_SRC_DIR}/version.py" DESTINATION ".")
+install(FILES "${TORCH_SRC_DIR}/version.py" DESTINATION "torch")
 
 # Skip building this library under MacOS, since it is currently failing to build on Mac
 # Github issue #61930