Move TorchVision to conda package to use pytorch-mutex

This is follow up after pytorch/builder#823 that gets rids of `feature` and migrate it to `run_constrained`

Author: malfet

packaging/pkg_helpers.bash

@@ -287,9 +287,9 @@ setup_conda_pytorch_constraint() {
 
 # Translate CUDA_VERSION into CUDA_CUDATOOLKIT_CONSTRAINT
 setup_conda_cudatoolkit_constraint() {
-  export CONDA_CPUONLY_FEATURE=""
+  export CONDA_BUILD_VARIANT="cuda"
   if [[ "$(uname)" == Darwin ]]; then
-    export CONDA_CUDATOOLKIT_CONSTRAINT=""
+    export CONDA_BUILD_VARIANT="cpu"
   else
     case "$CU_VERSION" in
       cu113)
@@ -318,7 +318,7 @@ setup_conda_cudatoolkit_constraint() {
         ;;
       cpu)
         export CONDA_CUDATOOLKIT_CONSTRAINT=""
-        export CONDA_CPUONLY_FEATURE="- cpuonly"
+        export CONDA_BUILD_VARIANT="cpu"
         ;;
       *)
         echo "Unrecognized CU_VERSION=$CU_VERSION"
@@ -329,10 +329,10 @@ setup_conda_cudatoolkit_constraint() {
 }
 
 setup_conda_cudatoolkit_plain_constraint() {
-  export CONDA_CPUONLY_FEATURE=""
+  export CONDA_BUILD_VARIANT="cuda"
   export CMAKE_USE_CUDA=1
   if [[ "$(uname)" == Darwin ]]; then
-    export CONDA_CUDATOOLKIT_CONSTRAINT=""
+    export CONDA_BUILD_VARIANT="cpu"
     export CMAKE_USE_CUDA=0
   else
     case "$CU_VERSION" in
@@ -359,7 +359,7 @@ setup_conda_cudatoolkit_plain_constraint() {
         ;;
       cpu)
         export CONDA_CUDATOOLKIT_CONSTRAINT=""
-        export CONDA_CPUONLY_FEATURE="cpuonly"
+        export CONDA_BUILD_VARIANT="cpu"
         export CMAKE_USE_CUDA=0
         ;;
       *)

packaging/torchvision/meta.yaml

@@ -1,3 +1,4 @@
+{% set build_variant = environ.get('CONDA_BUILD_VARIANT', 'cpu') %}
 package:
   name: torchvision
   version: "{{ environ.get('BUILD_VERSION') }}"
@@ -30,6 +31,14 @@ requirements:
     {{ environ.get('CONDA_PYTORCH_CONSTRAINT') }}
     {{ environ.get('CONDA_CUDATOOLKIT_CONSTRAINT') }}
 
+  {% if build_variant == 'cpu' %}
+  run_constrained:
+    - cpuonly
+  {% elif not osx %}
+  run_constrained:
+     - cpuonly <0
+  {% endif %}
+
 build:
   string: py{{py}}_{{ environ['CU_VERSION'] }}
   script: python setup.py install --single-version-externally-managed --record=record.txt
@@ -38,8 +47,6 @@ build:
     - FORCE_CUDA
     - BUILD_VERSION
     - TORCH_CUDA_ARCH_LIST
-  features:
-    {{ environ.get('CONDA_CPUONLY_FEATURE') }}
 
 test:
   imports: