patches: fix OPENBLAS_VERSION override being clobbered

DOCKER_GPU_BUILD_ARG's --build-arg OPENBLAS_VERSION=v0.3.34 was
silently overridden: build.sh unconditionally appends its own
--build-arg "OPENBLAS_VERSION=${OPENBLAS_VERSION:-}" later on the
docker build command line, and a later --build-arg for the same key
wins, so the build still picked up the default v0.3.33 and failed the
same way. Set OPENBLAS_VERSION as a plain shell variable in the case
branch instead, which flows into that later --build-arg correctly.

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

Author: luhenry

patches/torch/2.13.0/0001-CI-Add-manywheel-Dockerfile-for-riscv64.patch

@@ -9,15 +9,19 @@ manylinux2_39_riscv64-builder:cpu-riscv64 image in build.sh.
 
 Pin OPENBLAS_VERSION to v0.3.34: v0.3.33 (install_openblas.sh's default)
 fails to build on riscv64 with "'coremsg' undeclared" in
-dynamic_riscv64.c; v0.3.34 declares that buffer.
+dynamic_riscv64.c; v0.3.34 declares that buffer. Set as a plain shell
+variable (not folded into DOCKER_GPU_BUILD_ARG) since build.sh
+unconditionally appends its own `--build-arg "OPENBLAS_VERSION=..."`
+after DOCKER_GPU_BUILD_ARG on the docker build command line, and a
+later --build-arg for the same key silently wins.
 
 Upstream-Status: To upstream
 
 Signed-off-by: RISE Project CI <ci@riseproject.dev>
 ---
  .ci/docker/manywheel/Dockerfile_2_39_riscv64 | 66 +++++++++++++++++++++++++++++++++
- .ci/docker/manywheel/build.sh                | 10 ++++++
- 2 files changed, 76 insertions(+)
+ .ci/docker/manywheel/build.sh                | 11 +++++++
+ 2 files changed, 77 insertions(+)
 
 diff --git a/.ci/docker/manywheel/Dockerfile_2_39_riscv64 b/.ci/docker/manywheel/Dockerfile_2_39_riscv64
 new file mode 100644
@@ -94,7 +98,7 @@ new file mode 100644
 diff --git a/.ci/docker/manywheel/build.sh b/.ci/docker/manywheel/build.sh
 --- a/.ci/docker/manywheel/build.sh
 +++ b/.ci/docker/manywheel/build.sh
-@@ -43,6 +43,16 @@
+@@ -43,6 +43,17 @@
          DOCKER_GPU_BUILD_ARG=" --build-arg DEVTOOLSET_VERSION=13"
          MANY_LINUX_VERSION="2_28_aarch64"
          ;;
@@ -105,7 +109,8 @@ diff --git a/.ci/docker/manywheel/build.sh b/.ci/docker/manywheel/build.sh
 +        # See https://riseproject-dev.github.io/python-wheels/
 +        # v0.3.33 (install_openblas.sh's default) fails to build on riscv64
 +        # with "'coremsg' undeclared" in dynamic_riscv64.c; v0.3.34 fixes it.
-+        DOCKER_GPU_BUILD_ARG=" --platform linux/riscv64 --build-arg DEVTOOLSET_VERSION=14 --build-arg PIP_EXTRA_INDEX_URL=https://pypi.riseproject.dev/simple --build-arg PIP_PREFER_BINARY=1 --build-arg OPENBLAS_VERSION=v0.3.34"
++        OPENBLAS_VERSION="v0.3.34"
++        DOCKER_GPU_BUILD_ARG=" --platform linux/riscv64 --build-arg DEVTOOLSET_VERSION=14 --build-arg PIP_EXTRA_INDEX_URL=https://pypi.riseproject.dev/simple --build-arg PIP_PREFER_BINARY=1"
 +        MANY_LINUX_VERSION="2_39_riscv64"
 +        ;;
      manylinuxs390x-builder:cpu-s390x)