Bazelisk for riscv64

[Mizux]

All in the title, will be happy to have a release artifact for riscv64....

FYI

# enable qemu support for docker to run riscv64 image on amd64 host
$ docker run --pull always --rm --privileged multiarch/qemu-user-static --reset -p yes
# debian do provide a riscv64 image
$ docker run --platform linux/riscv64 --rm --init -it debian:latest bash
root# uname -m
riscv64
root# apt update
root# apt search bazel
bazel-bootstrap/stable 4.2.3+ds-11 riscv64
  Tool to automate software builds and tests
bazel-bootstrap-data/stable 4.2.3+ds-11 all
  Tool to automate software builds and tests (data files)
bazel-bootstrap-source/stable 4.2.3+ds-11 all
  Tool to automate software builds and tests (source code)

[jwnimmer-tri]

For anyone looking where to make a PR, I'd suggest looking at #608 for an example. I imagine the path forward here is to amend the build.sh script to also build and publish riscv binaries.

(I'm not a bazelisk project maintainer.)

[taurus-forever]

@jwnimmer-tri applying your changes for bazelisk is not enough, as no bazel:

> ./build.sh 
2026/08/10 11:15:32 could not download Bazel: could not determine path segment to use for Bazel binary: unsupported machine architecture "riscv64", must be arm64 or x86_64
...
2026/08/10 11:15:38 Downloading https://releases.bazel.build/9.2.0/release/bazel-9.2.0-linux-riscv64...
2026/08/10 11:15:38 could not download Bazel: failed to download bazel: failed to download bazel: not found

No Bazel support for riscv64 https://releases.bazel.build/9.2.0/release/ (yet).
Fingers-crossed for Rise-dev-appreciation/Rise-dev-appreciation#51