diff --git a/sci-libs/pytorch/ChangeLog b/sci-libs/pytorch/ChangeLog
new file mode 100644
index 0000000..06917de
--- /dev/null
+++ b/sci-libs/pytorch/ChangeLog
@@ -0,0 +1,18 @@
+*pytorch-1.4.0_p0 (23 Aug 2020)
+*pytorch-1.6.0 (23 Aug 2020)
+
+  23 Aug 2020;  <chymera@gentoo.org>
+  +files/0002-Don-t-build-libtorch-again-for-PyTorch-1.4.0.patch,
+  +files/0003-Change-path-to-caffe2-build-dir-made-by-libtorch.patch,
+  +files/0004-Don-t-fill-rpath-of-Caffe2-library-for-system-wide-i.patch,
+  +files/0005-Change-library-directory-according-to-CMake-build.patch,
+  +files/0010-Remove-conversion-ambiguity-in-ternary-operators.patch,
+  +files/pytorch-1.2.0-setup.patch, +files/pytorch-1.4.0-nccl-nvccflags.patch,
+  +files/pytorch-1.4.0-skip-tests.patch, +files/pytorch-1.4.0-sleef.patch,
+  +files/pytorch-1.6.0-global-dlopen.patch,
+  +files/pytorch-1.6.0-nccl-nvccflags.patch, +files/pytorch-1.6.0-setup.patch,
+  +files/pytorch-1.6.0-skip-tests.patch,
+  +files/pytorch-1.6.0-tensorpipe-unbundle-libuv.patch, +metadata.xml,
+  +pytorch-1.4.0_p0.ebuild, +pytorch-1.6.0.ebuild:
+  sci-libs/pytorch: fix ahead of Gentoo Science  Bug:
+  https://bugs.gentoo.org/738592
diff --git a/sci-libs/pytorch/Manifest b/sci-libs/pytorch/Manifest
new file mode 100644
index 0000000..37e8217
--- /dev/null
+++ b/sci-libs/pytorch/Manifest
@@ -0,0 +1,47 @@
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+DIST googletest-2fe3bd994.tar.gz 993527 SHA256 d0d447b4feeedca837a0d46a289d4223089b32ac2f84545fa4982755cc8919be SHA512 130182d2c1067bcd263fb27999c164d240f5d06d837475e71e7cadbf65c7211de00154dc1e15deae0b6ec2963799e55c0c21ee971e1c588064c5063e69a2bf1e WHIRLPOOL e7f57f9e35927c4ce12aba61597c2a8b6cba38c30a0bbde6681d8ff349477c431b9e6128fa6b9040fee99622580e61c8daead2364b9e8fe65542003366d7e346
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+DIST pthreadpool-029c88620.tar.gz 45970 SHA256 d13818a10a645d557202aa005606337b2a0cdf690e5655253800ab11abb0c076 SHA512 b51099fa9d62065883cc43dcd5f9717a17be5ee2e87fc861667172a09acb3a62929c8bbc8a5c0c00885a638af0ec2ae4149adde2ba85bf3c80834f9b973c2d5b WHIRLPOOL 3b8304ee02e92ec7f298168e7857916f85fe9f30776668ed2a04c4cb52b97c638da025b125599fbf7d5041f60a913e4edf10f9cad40d20a3d7a7005301245cba
+DIST pthreadpool-13da0b4c.tar.gz 12775 SHA256 90ab4f60ae0e99c0172dd5201dccc6de6c8f384a21b3d959588f4c1e00beec0f SHA512 1a1bdb96c993d785a2b65a190d86d44076aad8420e7e56c4553ad2786d196d41763a6edc9864bd1c456be8e56fc003f20b8e8e640760dd448310e61ef2d05e67 WHIRLPOOL ee7a0e86e63290d25f5695f9966c98ae841eb7bb0a1728022dd4323a05574d43ee5e08f92e2894ef60b99527d21181f86e5ebb15de8caba4520f60a246a51df3
+DIST pytorch-1.4.0_p0.tar.gz 8715711 SHA256 49de553a27e98d99f2037f2de3435f547fbc433403b69f89ccb1c118ace18483 SHA512 1ad2b7570de95c2bccacc7993cef9b15af1c5f2c2acb8c5c98baea7d8f498377351ce6f495ed4ba160e5412611d1e89747260c19e3db1e45a91faf2ec1e520b3 WHIRLPOOL 4c2a039e381720166761758f37d3cca28790513df62ceba87f3dc8fd54d8b24bed94ecaa21feda41fa896cebd96533e6e818be1ab8a3324a8fc6bc6887c317d2
+DIST pytorch-1.6.0.tar.gz 11376568 SHA256 7160e5bd291ad649d035f1c830dd064d1db42839b64b9a3502b5d47641233fb7 SHA512 117ff1588ed1ebd0df15fbed066c65ea026893fe9a40d14aa1f73d848fab114b1b11bd7ed083815030f7fdf13a824480521cb40865f48a24c7028f4d195f2127 WHIRLPOOL 03d9270b236502454c966f62426bc87d786b2ad180ec2f3d07c79c26184c91e3b52763c34638ce1e3d85c30a4b05b78813e693b714fef19939f478e9cfea85a2
+DIST sleef-7f523de6.tar.gz 1174007 SHA256 8cb5fae822077ca9cbc14dcc7bba9a3a35ad519284fc5169f9a176672c63860a SHA512 d83b24c34e83b36314344d5b31f1c3b673e38b44bc2d2bbbfdaf2019c3f0e73a83f2d13c6d745ca99d1532c1a3e0fcb4a71bd212e423bec03d610af5dd49e3f3 WHIRLPOOL 66acba28240c40557de2db457ed2c8f2462dde9a0f7f18dd3179d9d2806741e3b68033c76fe3f710a7351039e2fe175dbe3ed4e413e26add5c7a4914538dc713
+DIST sleef-7f523de65.tar.gz 1174007 SHA256 8cb5fae822077ca9cbc14dcc7bba9a3a35ad519284fc5169f9a176672c63860a SHA512 d83b24c34e83b36314344d5b31f1c3b673e38b44bc2d2bbbfdaf2019c3f0e73a83f2d13c6d745ca99d1532c1a3e0fcb4a71bd212e423bec03d610af5dd49e3f3 WHIRLPOOL 66acba28240c40557de2db457ed2c8f2462dde9a0f7f18dd3179d9d2806741e3b68033c76fe3f710a7351039e2fe175dbe3ed4e413e26add5c7a4914538dc713
+DIST tensorpipe-3b8089c9c.tar.gz 141980 SHA256 9d78a64a4456eb0caeba8742080c39e07019114c1f4914f0e1ffa8f0a507c40f SHA512 1e9473532b11c23ec7dd9fdb148c0440263ae41f42a7826a4f7e098ed2a7e0c99d5e9df344b310e17098c3d70749a38d20d8af992c4820bebdbd5078d1a20dcc WHIRLPOOL ba9adb45000274968b1b3bd65b7926ad5d761f6bcecf0b0b75cbe4b1cf5148d153cc7d21be027b476b1952f40ab0001217b9bee37416a8108d9743e3e3216ba5
diff --git a/sci-libs/pytorch/files/0002-Don-t-build-libtorch-again-for-PyTorch-1.4.0.patch b/sci-libs/pytorch/files/0002-Don-t-build-libtorch-again-for-PyTorch-1.4.0.patch
new file mode 100644
index 0000000..de9fe9a
--- /dev/null
+++ b/sci-libs/pytorch/files/0002-Don-t-build-libtorch-again-for-PyTorch-1.4.0.patch
@@ -0,0 +1,30 @@
+From e5003b88ad3a504eb04c0ba66c2f439149de2ee3 Mon Sep 17 00:00:00 2001
+From: Alexey Chernov <4ernov@gmail.com>
+Date: Tue, 5 Nov 2019 00:58:17 +0300
+Subject: [PATCH 2/7] Don't build `libtorch` again for PyTorch
+
+If starting with building of `libtorch` using CMake,
+don't build it again for the sake of running `setup.py`
+to build Python version (PyTorch).
+---
+ setup.py | 7 -------
+ 1 file changed, 7 deletions(-)
+
+Index: pytorch-1.4.0_p0/setup.py
+===================================================================
+--- pytorch-1.4.0_p0.orig/setup.py
++++ pytorch-1.4.0_p0/setup.py
+@@ -303,13 +303,6 @@ def build_deps():
+     check_pydep('yaml', 'pyyaml')
+     check_pydep('typing', 'typing')
+ 
+-    build_caffe2(version=version,
+-                 cmake_python_library=cmake_python_library,
+-                 build_python=True,
+-                 rerun_cmake=RERUN_CMAKE,
+-                 cmake_only=CMAKE_ONLY,
+-                 cmake=cmake)
+-
+     version_path = os.path.join(cwd, 'torch', 'version.py')
+     with open(version_path, 'w') as f:
+         f.write("__version__ = '{}'\n".format(version))
diff --git a/sci-libs/pytorch/files/0003-Change-path-to-caffe2-build-dir-made-by-libtorch.patch b/sci-libs/pytorch/files/0003-Change-path-to-caffe2-build-dir-made-by-libtorch.patch
new file mode 100644
index 0000000..f71ba17
--- /dev/null
+++ b/sci-libs/pytorch/files/0003-Change-path-to-caffe2-build-dir-made-by-libtorch.patch
@@ -0,0 +1,46 @@
+From dbb0bac77986016217cdfe779499a2ccd0e10570 Mon Sep 17 00:00:00 2001
+From: Alexey Chernov <4ernov@gmail.com>
+Date: Wed, 6 Nov 2019 00:16:24 +0300
+Subject: [PATCH 3/4] Change path to `caffe2` build dir made by `libtorch`
+
+Setup and use properly `caffe2` build dir made while
+`libtorch` building with CMake, so that it was used
+by the Python installation.
+---
+ setup.py | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/setup.py b/setup.py
+index f4bfdc99cd..60502b6add 100644
+--- a/setup.py
++++ b/setup.py
+@@ -236,7 +236,7 @@ else:
+ cwd = os.path.dirname(os.path.abspath(__file__))
+ lib_path = os.path.join(cwd, "torch", "lib")
+ third_party_path = os.path.join(cwd, "third_party")
+-caffe2_build_dir = os.path.join(cwd, "build")
++caffe2_build_dir = os.environ.get("CMAKE_BUILD_DIR", os.path.join(cwd, "build"))
+ # lib/pythonx.x/site-packages
+ rel_site_packages = distutils.sysconfig.get_python_lib(prefix='')
+ # full absolute path to the dir above
+@@ -279,7 +279,7 @@ elif sha != 'Unknown':
+     version += '+' + sha[:7]
+ report("Building wheel {}-{}".format(package_name, version))
+ 
+-cmake = CMake()
++cmake = CMake(caffe2_build_dir)
+ 
+ # all the work we need to do _before_ setup runs
+ def build_deps():
+@@ -445,7 +445,7 @@ class build_ext(setuptools.command.build_ext.build_ext):
+             filename = self.get_ext_filename(fullname)
+             report("\nCopying extension {}".format(ext.name))
+ 
+-            src = os.path.join("torch", rel_site_packages, filename)
++            src = os.path.join(caffe2_build_dir, filename)
+             if not os.path.exists(src):
+                 report("{} does not exist".format(src))
+                 del self.extensions[i]
+-- 
+2.23.0
+
diff --git a/sci-libs/pytorch/files/0004-Don-t-fill-rpath-of-Caffe2-library-for-system-wide-i.patch b/sci-libs/pytorch/files/0004-Don-t-fill-rpath-of-Caffe2-library-for-system-wide-i.patch
new file mode 100644
index 0000000..c8f57d9
--- /dev/null
+++ b/sci-libs/pytorch/files/0004-Don-t-fill-rpath-of-Caffe2-library-for-system-wide-i.patch
@@ -0,0 +1,104 @@
+From a0ace7295b6895954d2a0f8d6fe311a34a7c4e85 Mon Sep 17 00:00:00 2001
+From: Alexey Chernov <4ernov@gmail.com>
+Date: Tue, 12 Nov 2019 02:01:36 +0300
+Subject: [PATCH 4/4] Don't fill rpath of Caffe2 library for system-wide
+ install
+
+Don't fill in runtime path of Caffe2 library for the case of
+building for system-wide installation.
+---
+ CMakeLists.txt           |  3 +++
+ caffe2/CMakeLists.txt    | 18 +++++++++++++++---
+ cmake/Dependencies.cmake | 19 +++++++++++--------
+ 3 files changed, 29 insertions(+), 11 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 20923c0544..45a882ae0e 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -193,6 +193,9 @@ option(USE_TBB "Use TBB" OFF)
+ # Used when building Caffe2 through setup.py
+ option(BUILDING_WITH_TORCH_LIBS "Tell cmake if Caffe2 is being built alongside torch libs" ON)
+ 
++# Used when building Caffe2 for further system-wide installation
++option(BUILDING_SYSTEM_WIDE "Tell cmake if Caffe2 is being built for system-wide installation" OFF)
++
+ # /Z7 override option
+ # When generating debug symbols, CMake default to use the flag /Zi.
+ # However, it is not compatible with sccache. So we rewrite it off.
+diff --git a/caffe2/CMakeLists.txt b/caffe2/CMakeLists.txt
+index 1f7d037243..30d5615cdb 100644
+--- a/caffe2/CMakeLists.txt
++++ b/caffe2/CMakeLists.txt
+@@ -1235,7 +1235,11 @@ if (BUILD_PYTHON)
+   if (MSVC AND BUILD_SHARED_LIBS)
+     install(FILES $<TARGET_PDB_FILE:caffe2_pybind11_state> DESTINATION "${PYTHON_LIB_REL_PATH}/caffe2/python" OPTIONAL)
+   endif()
+-  set_target_properties(caffe2_pybind11_state PROPERTIES INSTALL_RPATH "${caffe2_pybind11_rpath}")
++  if (NOT BUILDING_SYSTEM_WIDE)
++    set_target_properties(caffe2_pybind11_state PROPERTIES INSTALL_RPATH "${caffe2_pybind11_rpath}")
++else()
++    set_target_properties(caffe2_pybind11_state PROPERTIES SKIP_BUILD_RPATH ON)
++  endif()
+ 
+   if(USE_CUDA)
+     add_library(caffe2_pybind11_state_gpu MODULE ${Caffe2_GPU_PYTHON_SRCS})
+@@ -1261,7 +1265,11 @@ if (BUILD_PYTHON)
+     if (MSVC AND BUILD_SHARED_LIBS)
+       install(FILES $<TARGET_PDB_FILE:caffe2_pybind11_state_gpu> DESTINATION "${PYTHON_LIB_REL_PATH}/caffe2/python" OPTIONAL)
+     endif()
+-    set_target_properties(caffe2_pybind11_state_gpu PROPERTIES INSTALL_RPATH "${caffe2_pybind11_rpath}")
++    if (NOT BUILDING_SYSTEM_WIDE)
++      set_target_properties(caffe2_pybind11_state_gpu PROPERTIES INSTALL_RPATH "${caffe2_pybind11_rpath}")
++    else()
++      set_target_properties(caffe2_pybind11_state_gpu PROPERTIES SKIP_BUILD_RPATH ON)
++    endif()
+   endif()
+ 
+   if(USE_ROCM)
+@@ -1284,7 +1292,11 @@ if (BUILD_PYTHON)
+         caffe2_pybind11_state_hip PROPERTIES LIBRARY_OUTPUT_DIRECTORY
+         ${CMAKE_BINARY_DIR}/caffe2/python)
+     install(TARGETS caffe2_pybind11_state_hip DESTINATION "${PYTHON_LIB_REL_PATH}/caffe2/python")
+-    set_target_properties(caffe2_pybind11_state_hip PROPERTIES INSTALL_RPATH "${caffe2_pybind11_rpath}")
++    if (NOT BUILDING_SYSTEM_WIDE)
++      set_target_properties(caffe2_pybind11_state_hip PROPERTIES INSTALL_RPATH "${caffe2_pybind11_rpath}")
++  else()
++      set_target_properties(caffe2_pybind11_state_hip PROPERTIES SKIP_BUILD_RPATH ON)
++    endif()
+   endif()
+ 
+   if (MSVC AND CMAKE_GENERATOR MATCHES "Visual Studio")
+diff --git a/cmake/Dependencies.cmake b/cmake/Dependencies.cmake
+index a8e9769536..6ef9d7b0e2 100644
+--- a/cmake/Dependencies.cmake
++++ b/cmake/Dependencies.cmake
+@@ -6,14 +6,17 @@ if (APPLE)
+ else()
+   set(_rpath_portable_origin $ORIGIN)
+ endif(APPLE)
+-# Use separate rpaths during build and install phases
+-set(CMAKE_SKIP_BUILD_RPATH  FALSE)
+-# Don't use the install-rpath during the build phase
+-set(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
+-set(CMAKE_INSTALL_RPATH "${_rpath_portable_origin}")
+-# Automatically add all linked folders that are NOT in the build directory to
+-# the rpath (per library?)
+-set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
++
++if (NOT BUILDING_SYSTEM_WIDE)
++  # Use separate rpaths during build and install phases
++  set(CMAKE_SKIP_BUILD_RPATH  FALSE)
++  # Don't use the install-rpath during the build phase
++  set(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
++  set(CMAKE_INSTALL_RPATH "${_rpath_portable_origin}")
++  # Automatically add all linked folders that are NOT in the build directory to
++  # the rpath (per library?)
++  set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
++endif()
+ 
+  # UBSAN triggers when compiling protobuf, so we need to disable it.
+ set(UBSAN_FLAG "-fsanitize=undefined")
+-- 
+2.23.0
+
diff --git a/sci-libs/pytorch/files/0005-Change-library-directory-according-to-CMake-build.patch b/sci-libs/pytorch/files/0005-Change-library-directory-according-to-CMake-build.patch
new file mode 100644
index 0000000..324b8f6
--- /dev/null
+++ b/sci-libs/pytorch/files/0005-Change-library-directory-according-to-CMake-build.patch
@@ -0,0 +1,31 @@
+From 52019a3f395e5fa97b26d424152d91f73b400f8e Mon Sep 17 00:00:00 2001
+From: Alexey Chernov <4ernov@gmail.com>
+Date: Wed, 13 Nov 2019 23:44:12 +0300
+Subject: [PATCH 5/5] Change library directory according to CMake build
+
+Change `lib_path` in favour of out-of-tree CMake build
+directory, so that all the C++ libraries be found.
+---
+ setup.py | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/setup.py b/setup.py
+index 60502b6add..cbced52192 100644
+--- a/setup.py
++++ b/setup.py
+@@ -234,9 +234,10 @@ else:
+ 
+ # Constant known variables used throughout this file
+ cwd = os.path.dirname(os.path.abspath(__file__))
+-lib_path = os.path.join(cwd, "torch", "lib")
++cmake_build_dir = os.environ.get("CMAKE_BUILD_DIR", os.path.join(cwd, "build"))
++lib_path = os.path.join(cmake_build_dir, "lib")
+ third_party_path = os.path.join(cwd, "third_party")
+-caffe2_build_dir = os.environ.get("CMAKE_BUILD_DIR", os.path.join(cwd, "build"))
++caffe2_build_dir = cmake_build_dir
+ # lib/pythonx.x/site-packages
+ rel_site_packages = distutils.sysconfig.get_python_lib(prefix='')
+ # full absolute path to the dir above
+-- 
+2.23.0
+
diff --git a/sci-libs/pytorch/files/0010-Remove-conversion-ambiguity-in-ternary-operators.patch b/sci-libs/pytorch/files/0010-Remove-conversion-ambiguity-in-ternary-operators.patch
new file mode 100644
index 0000000..49835d2
--- /dev/null
+++ b/sci-libs/pytorch/files/0010-Remove-conversion-ambiguity-in-ternary-operators.patch
@@ -0,0 +1,38 @@
+From 0f3a0d9a948fdd8481a5f7751a255ecd9ed4d37a Mon Sep 17 00:00:00 2001
+From: Alexey Chernov <4ernov@gmail.com>
+Date: Mon, 20 Jan 2020 01:21:22 +0300
+Subject: [PATCH 3/3] Remove conversion ambiguity in ternary operators
+
+It fails to compile with recent versions of Clang
+(namely, version 10 used behind HCC compiler when
+being built with ROCm support) with the
+`conditional expression is ambiguous` error.
+---
+ caffe2/operators/relu_op.cu | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/caffe2/operators/relu_op.cu b/caffe2/operators/relu_op.cu
+index f6edf7105e..ab49540fc9 100644
+--- a/caffe2/operators/relu_op.cu
++++ b/caffe2/operators/relu_op.cu
+@@ -51,7 +51,7 @@ __global__ void ReluCUDAKernel<half2>(const int N, const half2* X, half2* Y) {
+ #else
+     const float2 xx = __half22float2(X[i]);
+     Y[i] =
+-        __floats2half2_rn(xx.x > 0.0f ? xx.x : 0.0f, xx.y > 0.0f ? xx.y : 0.0f);
++        __floats2half2_rn(xx.x > 0.0f ? float(xx.x) : 0.0f, xx.y > 0.0f ? float(xx.y) : 0.0f);
+ #endif
+   }
+ }
+@@ -101,7 +101,7 @@ __global__ void ReluGradientCUDAKernel<half2>(
+     const float2 dy = __half22float2(dY[i]);
+     const float2 yy = __half22float2(Y[i]);
+     dX[i] =
+-        __floats2half2_rn(yy.x > 0.0f ? dy.x : 0.0f, yy.y > 0.0f ? dy.y : 0.0f);
++        __floats2half2_rn(yy.x > 0.0f ? float(dy.x) : 0.0f, yy.y > 0.0f ? float(dy.y) : 0.0f);
+ #endif
+   }
+ }
+-- 
+2.24.1
+
diff --git a/sci-libs/pytorch/files/pytorch-1.2.0-setup.patch b/sci-libs/pytorch/files/pytorch-1.2.0-setup.patch
new file mode 100644
index 0000000..85e796a
--- /dev/null
+++ b/sci-libs/pytorch/files/pytorch-1.2.0-setup.patch
@@ -0,0 +1,24 @@
+Index: pytorch-1.4.0_p0/setup.py
+===================================================================
+--- pytorch-1.4.0_p0.orig/setup.py
++++ pytorch-1.4.0_p0/setup.py
+@@ -288,9 +288,7 @@ def build_deps():
+             sys.exit(1)
+ 
+     check_file(os.path.join(third_party_path, "gloo", "CMakeLists.txt"))
+-    check_file(os.path.join(third_party_path, "pybind11", "CMakeLists.txt"))
+     check_file(os.path.join(third_party_path, 'cpuinfo', 'CMakeLists.txt'))
+-    check_file(os.path.join(third_party_path, 'tbb', 'Makefile'))
+     check_file(os.path.join(third_party_path, 'onnx', 'CMakeLists.txt'))
+     check_file(os.path.join(third_party_path, 'foxi', 'CMakeLists.txt'))
+     check_file(os.path.join(third_party_path, 'QNNPACK', 'CMakeLists.txt'))
+@@ -341,9 +339,6 @@ def build_deps():
+         if not same:
+             shutil.copyfile(orig_file, sym_file)
+ 
+-    dir_util.copy_tree('third_party/pybind11/include/pybind11/',
+-                       'torch/include/pybind11')
+-
+ ################################################################################
+ # Building dependent libraries
+ ################################################################################
diff --git a/sci-libs/pytorch/files/pytorch-1.4.0-nccl-nvccflags.patch b/sci-libs/pytorch/files/pytorch-1.4.0-nccl-nvccflags.patch
new file mode 100644
index 0000000..165e79d
--- /dev/null
+++ b/sci-libs/pytorch/files/pytorch-1.4.0-nccl-nvccflags.patch
@@ -0,0 +1,28 @@
+Index: nccl-7c72dee660e4d055b81721dd6b03e4e1c0a983cf/makefiles/common.mk
+===================================================================
+--- nccl-7c72dee660e4d055b81721dd6b03e4e1c0a983cf.orig/makefiles/common.mk
++++ nccl-7c72dee660e4d055b81721dd6b03e4e1c0a983cf/makefiles/common.mk
+@@ -46,7 +46,7 @@ endif
+ CXXFLAGS   := -DCUDA_MAJOR=$(CUDA_MAJOR) -DCUDA_MINOR=$(CUDA_MINOR) -fPIC -fvisibility=hidden
+ CXXFLAGS   += -Wall -Wno-unused-function -Wno-sign-compare -std=c++11 -Wvla
+ CXXFLAGS   += -I $(CUDA_INC)
+-NVCUFLAGS  := -ccbin $(CXX) $(NVCC_GENCODE) -lineinfo -std=c++11 -Xptxas -maxrregcount=96 -Xfatbin -compress-all
++NVCUFLAGS  := $(NVCCFLAGS) $(NVCC_GENCODE) -lineinfo -std=c++11 -Xptxas -maxrregcount=96 -Xfatbin -compress-all
+ # Use addprefix so that we can specify more than one path
+ NVLDFLAGS  := -L${CUDA_LIB} -lcudart -lrt
+ 
+@@ -60,14 +60,6 @@ NVLDFLAGS   += ${GCOV_FLAGS:%=-Xcompiler
+ # $(warning GCOV_FLAGS=${GCOV_FLAGS})
+ ########## GCOV ##########
+ 
+-ifeq ($(DEBUG), 0)
+-NVCUFLAGS += -O3
+-CXXFLAGS  += -O3 -g
+-else
+-NVCUFLAGS += -O0 -G -g
+-CXXFLAGS  += -O0 -g -ggdb3
+-endif
+-
+ ifneq ($(VERBOSE), 0)
+ NVCUFLAGS += -Xptxas -v -Xcompiler -Wall,-Wextra,-Wno-unused-parameter
+ CXXFLAGS  += -Wall -Wextra
diff --git a/sci-libs/pytorch/files/pytorch-1.4.0-skip-tests.patch b/sci-libs/pytorch/files/pytorch-1.4.0-skip-tests.patch
new file mode 100644
index 0000000..3682469
--- /dev/null
+++ b/sci-libs/pytorch/files/pytorch-1.4.0-skip-tests.patch
@@ -0,0 +1,28 @@
+Disable expected test failures.
+
+TCPStoreTest is too slow to run.
+
+Reference: https://github.com/pytorch/pytorch/issues/13746
+Reference: https://github.com/pytorch/pytorch/issues/21873
+
+Index: pytorch-1.4.0_p0/torch/lib/c10d/test/CMakeLists.txt
+===================================================================
+--- pytorch-1.4.0_p0.orig/torch/lib/c10d/test/CMakeLists.txt
++++ pytorch-1.4.0_p0/torch/lib/c10d/test/CMakeLists.txt
+@@ -14,7 +14,6 @@ function(c10d_add_test test_src)
+ endfunction()
+ 
+ c10d_add_test(FileStoreTest.cpp c10d)
+-c10d_add_test(TCPStoreTest.cpp c10d)
+ 
+ if(USE_CUDA)
+   if(USE_C10D_GLOO)
+Index: pytorch-1.4.0_p0/caffe2/share/contrib/depthwise/CMakeLists.txt
+===================================================================
+--- pytorch-1.4.0_p0.orig/caffe2/share/contrib/depthwise/CMakeLists.txt
++++ pytorch-1.4.0_p0/caffe2/share/contrib/depthwise/CMakeLists.txt
+@@ -6,4 +6,3 @@ set(Caffe2_CONTRIB_DEPTHWISE3x3_TEST_CPU
+ )
+ 
+ set(Caffe2_CPU_SRCS ${Caffe2_CPU_SRCS} ${Caffe2_CONTRIB_DEPTHWISE3x3_CPU_SRC} PARENT_SCOPE)
+-set(Caffe2_CPU_TEST_SRCS ${Caffe2_CPU_TEST_SRCS} ${Caffe2_CONTRIB_DEPTHWISE3x3_TEST_CPU_SRC} PARENT_SCOPE)
diff --git a/sci-libs/pytorch/files/pytorch-1.4.0-sleef.patch b/sci-libs/pytorch/files/pytorch-1.4.0-sleef.patch
new file mode 100644
index 0000000..222a0f7
--- /dev/null
+++ b/sci-libs/pytorch/files/pytorch-1.4.0-sleef.patch
@@ -0,0 +1,15 @@
+Give the location of sleef.h.
+
+Reference: https://github.com/pytorch/pytorch/issues/26555
+Index: pytorch-1.4.0/caffe2/CMakeLists.txt
+===================================================================
+--- pytorch-1.4.0.orig/caffe2/CMakeLists.txt
++++ pytorch-1.4.0/caffe2/CMakeLists.txt
+@@ -1062,6 +1062,7 @@ if (BUILD_TEST)
+     add_executable(${test_name} "${test_src}")
+     target_link_libraries(${test_name} ${Caffe2_MAIN_LIBS} gtest_main)
+     target_include_directories(${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})
+     add_test(NAME ${test_name} COMMAND $<TARGET_FILE:${test_name}>)
+     if (INSTALL_TEST)
diff --git a/sci-libs/pytorch/files/pytorch-1.6.0-global-dlopen.patch b/sci-libs/pytorch/files/pytorch-1.6.0-global-dlopen.patch
new file mode 100644
index 0000000..1e9388f
--- /dev/null
+++ b/sci-libs/pytorch/files/pytorch-1.6.0-global-dlopen.patch
@@ -0,0 +1,15 @@
+Don't hardcode the library path. Leave it to the dynamic loader.
+
+Index: pytorch-1.6.0/torch/__init__.py
+===================================================================
+--- pytorch-1.6.0.orig/torch/__init__.py
++++ pytorch-1.6.0/torch/__init__.py
+@@ -138,7 +138,7 @@ def _load_global_deps():
+     here = os.path.abspath(__file__)
+     lib_path = os.path.join(os.path.dirname(here), 'lib', lib_name)
+ 
+-    ctypes.CDLL(lib_path, mode=ctypes.RTLD_GLOBAL)
++    ctypes.CDLL(lib_name, mode=ctypes.RTLD_GLOBAL)
+ 
+ 
+ if (USE_RTLD_GLOBAL_WITH_LIBTORCH or os.getenv('TORCH_USE_RTLD_GLOBAL')) and \
diff --git a/sci-libs/pytorch/files/pytorch-1.6.0-nccl-nvccflags.patch b/sci-libs/pytorch/files/pytorch-1.6.0-nccl-nvccflags.patch
new file mode 100644
index 0000000..052474e
--- /dev/null
+++ b/sci-libs/pytorch/files/pytorch-1.6.0-nccl-nvccflags.patch
@@ -0,0 +1,27 @@
+diff -uprN nccl-5949d96f36d050e59d05872f8bbffd2549318e95/makefiles/common.mk nccl-patched/makefiles/common.mk
+--- nccl-5949d96f36d050e59d05872f8bbffd2549318e95/makefiles/common.mk	2020-06-09 00:31:44.000000000 +0800
++++ nccl-patched/makefiles/common.mk	2020-08-06 21:25:57.784279738 +0800
+@@ -54,7 +54,7 @@ CXXFLAGS   := -DCUDA_MAJOR=$(CUDA_MAJOR)
+ # Maxrregcount needs to be set accordingly to NCCL_MAX_NTHREADS (otherwise it will cause kernel launch errors)
+ # 512 : 120, 640 : 96, 768 : 80, 1024 : 60
+ # We would not have to set this if we used __launch_bounds__, but this only works on kernels, not on functions.
+-NVCUFLAGS  := -ccbin $(CXX) $(NVCC_GENCODE) -std=c++11 -Xptxas -maxrregcount=96 -Xfatbin -compress-all
++NVCUFLAGS  := $(NVCCFLAGS) $(NVCC_GENCODE) -std=c++11 -Xptxas -maxrregcount=96 -Xfatbin -compress-all
+ # Use addprefix so that we can specify more than one path
+ NVLDFLAGS  := -L${CUDA_LIB} -lcudart -lrt
+ 
+@@ -68,14 +68,6 @@ NVLDFLAGS   += ${GCOV_FLAGS:%=-Xcompiler
+ # $(warning GCOV_FLAGS=${GCOV_FLAGS})
+ ########## GCOV ##########
+ 
+-ifeq ($(DEBUG), 0)
+-NVCUFLAGS += -O3
+-CXXFLAGS  += -O3 -g
+-else
+-NVCUFLAGS += -O0 -G -g
+-CXXFLAGS  += -O0 -g -ggdb3
+-endif
+-
+ ifneq ($(VERBOSE), 0)
+ NVCUFLAGS += -Xptxas -v -Xcompiler -Wall,-Wextra,-Wno-unused-parameter
+ CXXFLAGS  += -Wall -Wextra
diff --git a/sci-libs/pytorch/files/pytorch-1.6.0-setup.patch b/sci-libs/pytorch/files/pytorch-1.6.0-setup.patch
new file mode 100644
index 0000000..6a197a9
--- /dev/null
+++ b/sci-libs/pytorch/files/pytorch-1.6.0-setup.patch
@@ -0,0 +1,14 @@
+Index: pytorch-1.4.0_p0/setup.py
+===================================================================
+--- pytorch-1.4.0_p0.orig/setup.py
++++ pytorch-1.4.0_p0/setup.py
+@@ -288,9 +288,7 @@ def build_deps():
+             sys.exit(1)
+ 
+     check_file(os.path.join(third_party_path, "gloo", "CMakeLists.txt"))
+-    check_file(os.path.join(third_party_path, "pybind11", "CMakeLists.txt"))
+     check_file(os.path.join(third_party_path, 'cpuinfo', 'CMakeLists.txt'))
+-    check_file(os.path.join(third_party_path, 'tbb', 'Makefile'))
+     check_file(os.path.join(third_party_path, 'onnx', 'CMakeLists.txt'))
+     check_file(os.path.join(third_party_path, 'foxi', 'CMakeLists.txt'))
+     check_file(os.path.join(third_party_path, 'QNNPACK', 'CMakeLists.txt'))
diff --git a/sci-libs/pytorch/files/pytorch-1.6.0-skip-tests.patch b/sci-libs/pytorch/files/pytorch-1.6.0-skip-tests.patch
new file mode 100644
index 0000000..3ef2c53
--- /dev/null
+++ b/sci-libs/pytorch/files/pytorch-1.6.0-skip-tests.patch
@@ -0,0 +1,14 @@
+Disable expected test failures.
+
+Reference: https://github.com/pytorch/pytorch/issues/13746
+Reference: https://github.com/pytorch/pytorch/issues/21873
+
+Index: pytorch-1.4.0_p0/caffe2/share/contrib/depthwise/CMakeLists.txt
+===================================================================
+--- pytorch-1.4.0_p0.orig/caffe2/share/contrib/depthwise/CMakeLists.txt
++++ pytorch-1.4.0_p0/caffe2/share/contrib/depthwise/CMakeLists.txt
+@@ -6,4 +6,3 @@ set(Caffe2_CONTRIB_DEPTHWISE3x3_TEST_CPU
+ )
+ 
+ set(Caffe2_CPU_SRCS ${Caffe2_CPU_SRCS} ${Caffe2_CONTRIB_DEPTHWISE3x3_CPU_SRC} PARENT_SCOPE)
+-set(Caffe2_CPU_TEST_SRCS ${Caffe2_CPU_TEST_SRCS} ${Caffe2_CONTRIB_DEPTHWISE3x3_TEST_CPU_SRC} PARENT_SCOPE)
diff --git a/sci-libs/pytorch/files/pytorch-1.6.0-tensorpipe-unbundle-libuv.patch b/sci-libs/pytorch/files/pytorch-1.6.0-tensorpipe-unbundle-libuv.patch
new file mode 100644
index 0000000..a4ba383
--- /dev/null
+++ b/sci-libs/pytorch/files/pytorch-1.6.0-tensorpipe-unbundle-libuv.patch
@@ -0,0 +1,13 @@
+Index: tensorpipe/cmake/pytorch.cmake
+===================================================================
+--- tensorpipe.orig/cmake/pytorch.cmake
++++ tensorpipe/cmake/pytorch.cmake
+@@ -138,7 +138,7 @@ endif()
+ 
+ add_library(tensorpipe ${TENSORPIPE_SRC})
+ 
+-set(TP_BUILD_LIBUV ON)
++set(TP_BUILD_LIBUV OFF)
+ find_package(uv REQUIRED)
+ target_link_libraries(tensorpipe PRIVATE uv::uv)
+ 
diff --git a/sci-libs/pytorch/metadata.xml b/sci-libs/pytorch/metadata.xml
new file mode 100644
index 0000000..8bd5a6a
--- /dev/null
+++ b/sci-libs/pytorch/metadata.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>4ernov@gmail.com</email>
+		<name>Alexey Chernov</name>
+	</maintainer>
+	<maintainer type="person">
+		<email>heroxbd@gentoo.org</email>
+		<name>Benda Xu</name>
+	</maintainer>
+	<use>
+		<flag name="asan">Build with address sanitizer (ASAN)</flag>
+		<flag name="atlas">Use ATLAS as BLAS implementation</flag>
+		<flag name="cuda">Enable support for nVidia CUDA</flag>
+		<flag name="eigen">Use Eigen as BLAS implementation</flag>
+		<flag name="fbgemm">Enable FBGEMM (Facebook GEneral Matrix Multiplication) support</flag>
+		<flag name="gflags">Build with gflags</flag>
+		<flag name="glog">Build with glog support</flag>
+		<flag name="gloo">Build gloo distributed communication backend support</flag>
+		<flag name="leveldb">Enable support for LevelDB</flag>
+		<flag name="lmdb">Enable support for LMDB</flag>
+		<flag name="mkl">Use Intel MKL as BLAS implementation</flag>
+		<flag name="mkldnn">Build with Intel MKL-DNN support</flag>
+		<flag name="namedtensor">Enable support for named tensors</flag>
+		<flag name="nnpack">Enable NNPACK support</flag>
+		<flag name="numa">Enable support for NUMA</flag>
+		<flag name="numpy">Enable NumPy support</flag>
+		<flag name="observers">Build observers</flag>
+		<flag name="openblas">Use OpenBLAS as BLAS implementation</flag>
+		<flag name="opencv">Enable support for OpenCV</flag>
+		<flag name="opencl">Enable support for OpenCL</flag>
+		<flag name="qnnpack">Enable QNNPACK support</flag>
+		<flag name="redis">Enable support for Redis</flag>
+		<flag name="tbb">Build with Intel TBB enabled</flag>
+		<flag name="tools">Build binary tools</flag>
+		<flag name="zeromq">Enable support for ZeroMQ</flag>
+	</use>
+</pkgmetadata>
diff --git a/sci-libs/pytorch/pytorch-1.4.0_p0.ebuild b/sci-libs/pytorch/pytorch-1.4.0_p0.ebuild
new file mode 100644
index 0000000..7626085
--- /dev/null
+++ b/sci-libs/pytorch/pytorch-1.4.0_p0.ebuild
@@ -0,0 +1,257 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_6 )
+
+inherit distutils-r1 cmake-utils cuda
+
+MPV=${PV/_p/a}
+
+DESCRIPTION="Tensors and Dynamic neural networks in Python with strong GPU acceleration"
+HOMEPAGE="https://pytorch.org/"
+SRC_URI="https://github.com/pytorch/${PN}/archive/v${MPV}.tar.gz -> ${P}.tar.gz
+https://github.com/facebookincubator/gloo/archive/ca528e32.tar.gz -> gloo-ca528e32.tar.gz
+https://github.com/google/benchmark/archive/505be96a.tar.gz -> benchmark-505be96a.tar.gz
+https://github.com/google/gemmlowp/archive/3fb5c176.tar.gz -> gemmlowp-3fb5c176.tar.gz
+https://github.com/google/googletest/archive/2fe3bd99.tar.gz -> googletest-2fe3bd99.tar.gz
+https://github.com/houseroad/foxi/archive/8f74bc4d.tar.gz -> foxi-8f74bc4d.tar.gz
+https://github.com/intel/ideep/archive/78eafa5d.tar.gz -> ideep-78eafa5d.tar.gz
+https://github.com/Maratyszcza/FP16/archive/febbb1c1.tar.gz -> FP16-febbb1c1.tar.gz
+https://github.com/Maratyszcza/FXdiv/archive/b742d114.tar.gz -> FXdiv-b742d114.tar.gz
+https://github.com/Maratyszcza/NNPACK/archive/c039579a.tar.gz -> NNPACK-c039579a.tar.gz
+https://github.com/Maratyszcza/PeachPy/archive/07d8fde8.tar.gz -> PeachPy-07d8fde8.tar.gz
+https://github.com/Maratyszcza/psimd/archive/90a938f3.tar.gz -> psimd-90a938f3.tar.gz
+https://github.com/Maratyszcza/pthreadpool/archive/13da0b4c.tar.gz -> pthreadpool-13da0b4c.tar.gz
+cuda? ( https://github.com/NVIDIA/nccl/archive/7c72dee6.tar.gz -> nccl-7c72dee6.tar.gz )
+https://github.com/NVlabs/cub/archive/285aeeba.tar.gz -> cub-285aeeba.tar.gz
+https://github.com/onnx/onnx/archive/2891e145.tar.gz -> onnx-2891e145.tar.gz
+https://github.com/onnx/onnx-tensorrt/archive/cb3d8066.tar.gz -> onnx-tensorrt-cb3d8066.tar.gz
+https://github.com/pytorch/cpuinfo/archive/89fe1695.tar.gz -> cpuinfo-89fe1695.tar.gz
+https://github.com/pytorch/fbgemm/archive/82d259da.tar.gz -> fbgemm-82d259da.tar.gz
+https://github.com/pytorch/QNNPACK/archive/7d2a4e99.tar.gz -> QNNPACK-7d2a4e99.tar.gz
+https://github.com/shibatch/sleef/archive/7f523de6.tar.gz -> sleef-7f523de6.tar.gz
+https://github.com/asmjit/asmjit/archive/17556b2d.tar.gz -> asmjit-17556b2d.tar.gz
+	"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64"
+
+IUSE="asan atlas cuda eigen +fbgemm ffmpeg gflags glog +gloo leveldb lmdb mkl mkldnn mpi namedtensor +nnpack numa +numpy +observers +openblas opencl opencv +openmp +python +qnnpack redis static tbb test tools zeromq"
+
+REQUIRED_USE="
+	python? ( ${PYTHON_REQUIRED_USE} )
+	numpy? ( python )
+	^^ ( atlas eigen mkl openblas )
+"
+
+DEPEND="
+	dev-libs/protobuf
+	dev-python/pyyaml[${PYTHON_USEDEP}]
+	atlas? ( sci-libs/atlas )
+	cuda? ( dev-libs/cudnn
+		dev-cpp/eigen[cuda] )
+	ffmpeg? ( virtual/ffmpeg )
+	gflags? ( dev-cpp/gflags )
+	glog? ( dev-cpp/glog )
+	leveldb? ( dev-libs/leveldb )
+	lmdb? ( dev-db/lmdb )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	numpy? ( dev-python/numpy[${PYTHON_USEDEP}] )
+	openblas? ( sci-libs/openblas )
+	opencl? ( dev-libs/clhpp virtual/opencl )
+	opencv? ( media-libs/opencv )
+	python? ( ${PYTHON_DEPS}
+		dev-python/pybind11[${PYTHON_USEDEP}]
+	)
+	redis? ( dev-db/redis )
+	zeromq? ( net-libs/zeromq )
+	eigen? ( dev-cpp/eigen )
+"
+RDEPEND="${DEPEND}"
+BDEPEND=""
+
+DEPEND="
+	test? ( dev-python/pytest[${PYTHON_USEDEP}] )
+	dev-python/setuptools[${PYTHON_USEDEP}]
+	dev-cpp/tbb
+	app-arch/zstd
+	dev-python/protobuf-python[${PYTHON_USEDEP}]
+	dev-python/pybind11[${PYTHON_USEDEP}]
+	sys-fabric/libibverbs
+	sys-process/numactl
+"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.2.0-setup.patch
+	"${FILESDIR}"/${PN}-1.4.0-sleef.patch
+	"${FILESDIR}"/${PN}-1.4.0-skip-tests.patch
+	"${FILESDIR}"/0002-Don-t-build-libtorch-again-for-PyTorch-1.4.0.patch
+	"${FILESDIR}"/0003-Change-path-to-caffe2-build-dir-made-by-libtorch.patch
+	"${FILESDIR}"/0005-Change-library-directory-according-to-CMake-build.patch
+)
+
+src_unpack() {
+	default
+
+	mv -v ${PN}-${MPV} ${P} || die
+}
+
+src_prepare() {
+	cmake-utils_src_prepare
+
+	mv -v third_party/miniz-* ../ || die
+	rm -r third_party || die
+	ln -s .. third_party || die
+	cd .. || die
+	for d in *; do
+		case ${d} in
+			${PN}* | miniz-*) continue ;;
+			PeachPy-*) mv -v ${d} python-peachpy || die ;;
+			*) mv -v ${d} ${d%-*} || die ;;
+		esac
+	done
+
+	mv -v FBGEMM fbgemm || die
+	cd fbgemm || die
+	rm -r third_party || die
+	ln -s .. third_party || die
+
+	cd ../onnx || die
+	rm -r third_party || die
+	ln -s .. third_party || die
+
+	if use cuda; then
+		cd ../nccl || die
+		eapply "${FILESDIR}"/${PN}-1.4.0-nccl-nvccflags.patch
+		ln -s . nccl || die
+
+		cuda_src_prepare
+		export CUDAHOSTCXX=$(cuda_gccdir)/g++
+	fi
+}
+
+src_configure() {
+	local blas="Eigen"
+
+	if use atlas; then
+		blas="ATLAS"
+	elif use mkl; then
+		blas="MKL"
+	elif use openblas; then
+		blas="OpenBLAS"
+	fi
+
+	local mycmakeargs=(
+		-DTORCH_BUILD_VERSION=${PV}
+		-DTORCH_INSTALL_LIB_DIR=$(get_libdir)
+		-DBUILD_BINARY=$(usex tools ON OFF)
+		-DBUILD_CUSTOM_PROTOBUF=OFF
+		-DBUILD_PYTHON=$(usex python ON OFF)
+		-DBUILD_SHARED_LIBS=$(usex static OFF ON)
+		-DBUILD_TEST=$(usex test ON OFF)
+		-DUSE_ASAN=$(usex asan ON OFF)
+		-DUSE_CUDA=$(usex cuda ON OFF)
+		-DUSE_NCCL=$(usex cuda ON OFF)
+		-DUSE_SYSTEM_NCCL=OFF
+		-DUSE_ROCM=OFF
+		-DUSE_FBGEMM=$(usex fbgemm ON OFF)
+		-DUSE_FFMPEG=$(usex ffmpeg ON OFF)
+		-DUSE_GFLAGS=$(usex gflags ON OFF)
+		-DUSE_GLOG=$(usex glog ON OFF)
+		-DUSE_LEVELDB=$(usex leveldb ON OFF)
+		-DUSE_LITE_PROTO=OFF
+		-DUSE_LMDB=$(usex lmdb ON OFF)
+		-DCAFFE2_USE_MKL=$(usex mkl ON OFF)
+		-DUSE_MKLDNN=$(usex mkldnn ON OFF)
+		-DUSE_MKLDNN_CBLAS=OFF
+		-DUSE_NNPACK=$(usex nnpack ON OFF)
+		-DUSE_NUMPY=$(usex numpy ON OFF)
+		-DUSE_NUMA=$(usex numa ON OFF)
+		-DUSE_OBSERVERS=$(usex observers ON OFF)
+		-DUSE_OPENCL=$(usex opencl ON OFF)
+		-DUSE_OPENCV=$(usex opencv ON OFF)
+		-DUSE_OPENMP=$(usex openmp ON OFF)
+		-DUSE_TBB=OFF
+		-DUSE_PROF=OFF
+		-DUSE_QNNPACK=$(usex qnnpack ON OFF)
+		-DUSE_REDIS=$(usex redis ON OFF)
+		-DUSE_ROCKSDB=OFF
+		-DUSE_ZMQ=$(usex zeromq ON OFF)
+		-DUSE_MPI=$(usex mpi ON OFF)
+		-DUSE_GLOO=$(usex gloo ON OFF)
+		-DUSE_SYSTEM_EIGEN_INSTALL=ON
+		-DBUILD_NAMEDTENSOR=$(usex namedtensor ON OFF)
+		-DBLAS=${blas}
+	)
+
+	cmake-utils_src_configure
+
+	if use python; then
+		CMAKE_BUILD_DIR=${BUILD_DIR} distutils-r1_src_configure
+	fi
+
+	# do not rerun cmake and the build process in src_install
+	sed '/RERUN/,+1d' -i ${BUILD_DIR}/build.ninja || die
+}
+
+src_compile() {
+	cmake-utils_src_compile
+
+	if use python; then
+		CMAKE_BUILD_DIR=${BUILD_DIR} distutils-r1_src_compile
+	fi
+}
+
+src_install() {
+	cmake-utils_src_install
+
+	local LIB=$(get_libdir)
+	if [[ ${LIB} != lib ]]; then
+		mv -fv "${ED}"/usr/lib/*.so "${ED}"/usr/${LIB}/ || die
+	fi
+
+	rm -rfv "${ED}/torch"
+	rm -rfv "${ED}/var"
+	rm -rfv "${ED}/usr/lib"
+
+	rm -fv "${ED}/usr/include/*.{h,hpp}"
+	rm -rfv "${ED}/usr/include/asmjit"
+	rm -rfv "${ED}/usr/include/c10d"
+	rm -rfv "${ED}/usr/include/fbgemm"
+	rm -rfv "${ED}/usr/include/fp16"
+	rm -rfv "${ED}/usr/include/gloo"
+	rm -rfv "${ED}/usr/include/include"
+	rm -rfv "${ED}/usr/include/var"
+
+	cp -rv "${WORKDIR}/${P}/third_party/pybind11/include/pybind11" "${ED}/usr/include/"
+
+	rm -fv "${ED}/usr/lib64/libtbb.so"
+	rm -rfv "${ED}/usr/lib64/cmake"
+
+	if use python; then
+		install_shm_manager() {
+			TORCH_BIN_DIR="${ED}/usr/lib64/${EPYTHON}/site-packages/torch/bin"
+
+			mkdir -pv ${TORCH_BIN_DIR}
+			cp -v "${ED}/usr/bin/torch_shm_manager" "${TORCH_BIN_DIR}"
+		}
+
+		python_foreach_impl install_shm_manager
+
+		scanelf -r --fix "${BUILD_DIR}/caffe2/python"
+		CMAKE_BUILD_DIR=${BUILD_DIR} distutils-r1_src_install
+
+		python_foreach_impl python_optimize
+	fi
+
+	find "${ED}/usr/lib64" -name "*.a" -exec rm -fv {} \;
+
+	use test && rm -rfv "${ED}/usr/test" "${ED}"/usr/bin/test_{api,jit}
+
+	# Remove the empty directories by CMake Python:
+	find "${ED}" -type d -empty -delete || die
+}
diff --git a/sci-libs/pytorch/pytorch-1.6.0.ebuild b/sci-libs/pytorch/pytorch-1.6.0.ebuild
new file mode 100644
index 0000000..fbb81d4
--- /dev/null
+++ b/sci-libs/pytorch/pytorch-1.6.0.ebuild
@@ -0,0 +1,282 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_6 )
+
+inherit distutils-r1 cmake-utils cuda
+
+MPV=${PV/_p/a}
+
+DESCRIPTION="Tensors and Dynamic neural networks in Python with strong GPU acceleration"
+HOMEPAGE="https://pytorch.org/"
+SRC_URI="https://github.com/pytorch/${PN}/archive/v${MPV}.tar.gz -> ${P}.tar.gz
+https://github.com/google/benchmark/archive/505be96ab.tar.gz -> benchmark-505be96ab.tar.gz
+https://github.com/pytorch/cpuinfo/archive/63b254577.tar.gz -> cpuinfo-63b254577.tar.gz
+https://github.com/NVlabs/cub/archive/d106ddb99.tar.gz -> cub-d106ddb99.tar.gz
+https://github.com/pytorch/fbgemm/archive/87c378172.tar.gz -> fbgemm-87c378172.tar.gz
+https://github.com/fmtlib/fmt/archive/9bdd1596c.tar.gz -> fmt-9bdd1596c.tar.gz
+https://github.com/houseroad/foxi/archive/8015abb72.tar.gz -> foxi-8015abb72.tar.gz
+https://github.com/Maratyszcza/FP16/archive/4dfe081cf.tar.gz -> FP16-4dfe081cf.tar.gz
+https://github.com/Maratyszcza/FXdiv/archive/b408327ac.tar.gz -> FXdiv-b408327ac.tar.gz
+https://github.com/google/gemmlowp/archive/3fb5c176c.tar.gz -> gemmlowp-3fb5c176c.tar.gz
+https://github.com/facebookincubator/gloo/archive/3d08580f9.tar.gz -> gloo-3d08580f9.tar.gz
+https://github.com/google/googletest/archive/2fe3bd994.tar.gz -> googletest-2fe3bd994.tar.gz
+https://github.com/intel/ideep/archive/938cc6889.tar.gz -> ideep-938cc6889.tar.gz
+cuda? ( https://github.com/NVIDIA/nccl/archive/5949d96f3.tar.gz -> nccl-5949d96f3.tar.gz )
+https://github.com/Maratyszcza/NNPACK/archive/24b55303f.tar.gz -> NNPACK-24b55303f.tar.gz
+https://github.com/onnx/onnx/archive/a82c6a701.tar.gz -> onnx-a82c6a701.tar.gz
+https://github.com/onnx/onnx-tensorrt/archive/c15321141.tar.gz -> onnx-tensorrt-c15321141.tar.gz
+https://github.com/Maratyszcza/psimd/archive/072586a71.tar.gz -> psimd-072586a71.tar.gz
+https://github.com/Maratyszcza/pthreadpool/archive/029c88620.tar.gz -> pthreadpool-029c88620.tar.gz
+https://github.com/Maratyszcza/PeachPy/archive/07d8fde8a.tar.gz -> PeachPy-07d8fde8a.tar.gz
+https://github.com/pytorch/QNNPACK/archive/7d2a4e993.tar.gz -> QNNPACK-7d2a4e993.tar.gz
+https://github.com/shibatch/sleef/archive/7f523de65.tar.gz -> sleef-7f523de65.tar.gz
+https://github.com/pytorch/tensorpipe/archive/3b8089c9c.tar.gz -> tensorpipe-3b8089c9c.tar.gz
+https://github.com/google/XNNPACK/archive/1b354636b.tar.gz -> XNNPACK-1b354636b.tar.gz
+https://github.com/asmjit/asmjit/archive/9057aa30.tar.gz -> asmjit-9057aa30.tar.gz
+	"
+
+# git clone git@github.com:pytorch/pytorch.git && cd pytorch
+# src_uri() {
+# join \
+#   <(git config --file .gitmodules --get-regexp url | sed -r -e 's/^submodule.(.*).url (.*)/\1 \2/' -e 's,NNPACK_deps/,,' -e 's/third-party/third_party/' | sort) \
+#   <(git submodule status | awk '{print $2 " " $1}' | sort) | \
+# while read path url hash; do
+#         [[ ${path} =~ (eigen|six|ios|neon2sse|protobuf|pybind11|enum34|tbb|zstd|fbjni) ]] && continue
+#         u=${url%.git}
+#         h=${hash#-}
+#         h=${h:0:8}
+#         echo "${u}/archive/${h}.tar.gz -> $(basename ${u})-${h}.tar.gz"
+# done
+# }
+# src_uri
+
+# git submodule update --init third_party/fbgemm && cd third_party/fbgemm
+# src_uri | grep asmjit
+# cd ../..
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="~amd64"
+
+IUSE="asan atlas cuda eigen +fbgemm ffmpeg gflags glog +gloo leveldb lmdb mkl mkldnn mpi namedtensor +nnpack numa +numpy +observers +openblas opencl opencv +openmp +python +qnnpack redis static test tools zeromq"
+
+REQUIRED_USE="
+	python? ( ${PYTHON_REQUIRED_USE} )
+	numpy? ( python )
+	^^ ( atlas eigen mkl openblas )
+"
+
+RDEPEND="
+	dev-libs/protobuf
+	dev-python/pyyaml[${PYTHON_USEDEP}]
+	atlas? ( sci-libs/atlas )
+	cuda? ( dev-libs/cudnn
+		dev-cpp/eigen[cuda] )
+	ffmpeg? ( virtual/ffmpeg )
+	gflags? ( dev-cpp/gflags )
+	glog? ( dev-cpp/glog )
+	leveldb? ( dev-libs/leveldb )
+	lmdb? ( dev-db/lmdb )
+	mkl? ( sci-libs/mkl )
+	mpi? ( virtual/mpi )
+	numpy? ( dev-python/numpy[${PYTHON_USEDEP}] )
+	openblas? ( sci-libs/openblas )
+	opencl? ( dev-libs/clhpp virtual/opencl )
+	opencv? ( media-libs/opencv )
+	python? ( ${PYTHON_DEPS}
+		dev-python/pybind11[${PYTHON_USEDEP}]
+	)
+	redis? ( dev-db/redis )
+	zeromq? ( net-libs/zeromq )
+	eigen? ( dev-cpp/eigen )
+	dev-libs/libuv
+"
+BDEPEND=""
+
+DEPEND="${RDEPEND}
+	test? ( dev-python/pytest[${PYTHON_USEDEP}] )
+	dev-python/setuptools[${PYTHON_USEDEP}]
+	dev-cpp/tbb
+	app-arch/zstd
+	dev-python/protobuf-python[${PYTHON_USEDEP}]
+	dev-python/pybind11[${PYTHON_USEDEP}]
+	sys-fabric/libibverbs
+	sys-process/numactl
+"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.6.0-setup.patch
+	"${FILESDIR}"/${PN}-1.6.0-skip-tests.patch
+	"${FILESDIR}"/${PN}-1.6.0-global-dlopen.patch
+	"${FILESDIR}"/0002-Don-t-build-libtorch-again-for-PyTorch-1.4.0.patch
+	"${FILESDIR}"/0003-Change-path-to-caffe2-build-dir-made-by-libtorch.patch
+	"${FILESDIR}"/0005-Change-library-directory-according-to-CMake-build.patch
+)
+
+src_unpack() {
+	default
+
+	[[ -d ${P} ]] || mv -v ${PN}-${MPV} ${P} || die
+}
+
+src_prepare() {
+	cmake-utils_src_prepare
+
+	mv -v third_party/miniz-* ../ || die
+	rm -r third_party || die
+	ln -s .. third_party || die
+	cd .. || die
+	for d in *; do
+		case ${d} in
+			${PN}* | miniz-*) continue ;;
+			PeachPy-*) mv -v ${d} python-peachpy || die ;;
+			*) mv -v ${d} ${d%-*} || die ;;
+		esac
+	done
+
+	mv -v FBGEMM fbgemm || die
+	cd fbgemm || die
+	rm -r third_party || die
+	ln -s .. third_party || die
+
+	cd ../onnx || die
+	rm -r third_party || die
+	ln -s .. third_party || die
+
+	if use cuda; then
+		cd ../nccl || die
+		eapply "${FILESDIR}"/${PN}-1.6.0-nccl-nvccflags.patch
+		ln -s . nccl || die
+
+		cuda_src_prepare
+		export CUDAHOSTCXX=$(cuda_gccdir)/g++
+	fi
+
+	cd ../tensorpipe || die
+	eapply "${FILESDIR}"/${PN}-1.6.0-tensorpipe-unbundle-libuv.patch
+}
+
+src_configure() {
+	local blas="Eigen"
+
+	if use atlas; then
+		blas="ATLAS"
+	elif use mkl; then
+		blas="MKL"
+	elif use openblas; then
+		blas="OpenBLAS"
+	fi
+
+	local mycmakeargs=(
+		-DTORCH_BUILD_VERSION=${PV}
+		-DTORCH_INSTALL_LIB_DIR=$(get_libdir)
+		-DBUILD_BINARY=$(usex tools ON OFF)
+		-DBUILD_CUSTOM_PROTOBUF=OFF
+		-DBUILD_PYTHON=$(usex python ON OFF)
+		-DBUILD_SHARED_LIBS=$(usex static OFF ON)
+		-DBUILD_TEST=$(usex test ON OFF)
+		-DUSE_ASAN=$(usex asan ON OFF)
+		-DUSE_CUDA=$(usex cuda ON OFF)
+		-DUSE_NCCL=$(usex cuda ON OFF)
+		-DUSE_SYSTEM_NCCL=OFF
+		-DUSE_ROCM=OFF
+		-DUSE_FBGEMM=$(usex fbgemm ON OFF)
+		-DUSE_FFMPEG=$(usex ffmpeg ON OFF)
+		-DUSE_GFLAGS=$(usex gflags ON OFF)
+		-DUSE_GLOG=$(usex glog ON OFF)
+		-DUSE_LEVELDB=$(usex leveldb ON OFF)
+		-DUSE_LITE_PROTO=OFF
+		-DUSE_LMDB=$(usex lmdb ON OFF)
+		-DCAFFE2_USE_MKL=$(usex mkl ON OFF)
+		-DUSE_MKLDNN=$(usex mkldnn ON OFF)
+		-DUSE_MKLDNN_CBLAS=OFF
+		-DUSE_NNPACK=$(usex nnpack ON OFF)
+		-DUSE_NUMPY=$(usex numpy ON OFF)
+		-DUSE_NUMA=$(usex numa ON OFF)
+		-DUSE_OBSERVERS=$(usex observers ON OFF)
+		-DUSE_OPENCL=$(usex opencl ON OFF)
+		-DUSE_OPENCV=$(usex opencv ON OFF)
+		-DUSE_OPENMP=$(usex openmp ON OFF)
+		-DUSE_TBB=OFF
+		-DUSE_PROF=OFF
+		-DUSE_QNNPACK=$(usex qnnpack ON OFF)
+		-DUSE_REDIS=$(usex redis ON OFF)
+		-DUSE_ROCKSDB=OFF
+		-DUSE_ZMQ=$(usex zeromq ON OFF)
+		-DUSE_MPI=$(usex mpi ON OFF)
+		-DUSE_GLOO=$(usex gloo ON OFF)
+		-DUSE_SYSTEM_EIGEN_INSTALL=ON
+		-DBUILD_NAMEDTENSOR=$(usex namedtensor ON OFF)
+		-DBLAS=${blas}
+	)
+
+	cmake-utils_src_configure
+
+	if use python; then
+		CMAKE_BUILD_DIR="${BUILD_DIR}" distutils-r1_src_configure
+	fi
+
+	# do not rerun cmake and the build process in src_install
+	sed '/RERUN/,+1d' -i "${BUILD_DIR}"/build.ninja || die
+}
+
+src_compile() {
+	cmake-utils_src_compile
+
+	if use python; then
+		CMAKE_BUILD_DIR=${BUILD_DIR} distutils-r1_src_compile
+	fi
+}
+
+src_install() {
+	cmake-utils_src_install
+
+	local LIB=$(get_libdir)
+	if [[ ${LIB} != lib ]]; then
+		mv -fv "${ED}"/usr/lib/*.so "${ED}"/usr/${LIB}/ || die
+	fi
+
+	rm -rfv "${ED}/torch"
+	rm -rfv "${ED}/var"
+	rm -rfv "${ED}/usr/lib"
+
+	rm -fv "${ED}/usr/include/*.{h,hpp}"
+	rm -rfv "${ED}/usr/include/asmjit"
+	rm -rfv "${ED}/usr/include/c10d"
+	rm -rfv "${ED}/usr/include/fbgemm"
+	rm -rfv "${ED}/usr/include/fp16"
+	rm -rfv "${ED}/usr/include/gloo"
+	rm -rfv "${ED}/usr/include/include"
+	rm -rfv "${ED}/usr/include/var"
+
+	cp -rv "${WORKDIR}/${P}/third_party/pybind11/include/pybind11" "${ED}/usr/include/"
+
+	rm -fv "${ED}/usr/lib64/libtbb.so"
+	rm -rfv "${ED}/usr/lib64/cmake"
+
+	if use python; then
+		install_shm_manager() {
+			TORCH_BIN_DIR="${ED}/usr/lib64/${EPYTHON}/site-packages/torch/bin"
+
+			mkdir -pv ${TORCH_BIN_DIR}
+			cp -v "${ED}/usr/bin/torch_shm_manager" "${TORCH_BIN_DIR}"
+		}
+
+		python_foreach_impl install_shm_manager
+
+		scanelf -r --fix "${BUILD_DIR}/caffe2/python"
+		CMAKE_BUILD_DIR=${BUILD_DIR} distutils-r1_src_install
+
+		python_foreach_impl python_optimize
+	fi
+
+	find "${ED}/usr/${LIB}" -name "*.a" -exec rm -fv {} \;
+
+	use test && rm -rfv "${ED}/usr/test" "${ED}"/usr/bin/test_{api,jit}
+
+	# Remove the empty directories by CMake Python:
+	find "${ED}" -type d -empty -delete || die
+}