fix: Add linux_riscv64 to _pip_repository_impl

Fix #2729

Author: kxxt

CHANGELOG.md

@@ -110,6 +110,8 @@ END_UNRELEASED_TEMPLATE
   ([#3339](https://github.com/bazel-contrib/rules_python/issues/3339)).
 * (uv) {obj}`//python/uv:lock.bzl%lock` now works with a local platform
   runtime.
+* (pypi) `linux_riscv64` is added to the platforms list in `_pip_repository_impl`,
+  which fixes [a build issue for tensorflow on riscv64](https://github.com/bazel-contrib/rules_python/discussions/2729).
 * (toolchains) WORKSPACE builds now correctly register musl and freethreaded
   variants. Setting {obj}`--py_linux_libc=musl` and `--py_freethreaded=yes` now
   activate them, respectively.
@@ -1980,4 +1982,4 @@ Breaking changes:
 * (pip) Create all_data_requirements alias
 * Expose Python C headers through the toolchain.
 
-[0.24.0]: https://github.com/bazel-contrib/rules_python/releases/tag/0.24.0
+[0.24.0]: https://github.com/bazel-contrib/rules_python/releases/tag/0.24.0

python/private/pypi/pip_repository.bzl

@@ -96,6 +96,7 @@ def _pip_repository_impl(rctx):
                 "linux_aarch64",
                 "linux_arm",
                 "linux_ppc",
+                "linux_riscv64",
                 "linux_s390x",
                 "linux_x86_64",
                 "osx_aarch64",

python/private/pypi/whl_installer/platform.py

@@ -45,6 +45,7 @@ class Arch(Enum):
     ppc64le = 5
     s390x = 6
     arm = 7
+    riscv64 = 8
     amd64 = x86_64
     arm64 = aarch64
     i386 = x86_32
@@ -269,6 +270,8 @@ def platform_machine(self) -> str:
             return "ppc"
         elif self.arch == Arch.ppc64le:
             return "ppc64le"
+        elif self.arch == Arch.riscv64:
+            return "riscv64"
         elif self.arch == Arch.s390x:
             return "s390x"
         else: