Bazelisk is a user-friendly launcher for Bazel.

From its project description:
Bazelisk is a wrapper for Bazel written in Go. It automatically picks a good version of Bazel given your current working directory, downloads it from the official server (if required), and then transparently passes through all command-line arguments to the real Bazel binary. You can call it just like you would call Bazel.

The rationales are below:

1. Maintaining our own Bazel is kind of a pain (e.g. hard to update to JDK 17).
2. Different projects may require different Bazel versions. Using Bazelisk, we can easily specify which Bazel version we want through methods like environment variables (USE_BAZEL_VERSION).
3. While Bazelisk does require network: yes to download Bazel, if a package uses Bazel to build it's almost guaranteed to fetch Bazel rules from the internet so we would need network: yes anyway.
4. This is also true for Bazel, but I'd like to mention it here because it seems to often get ignored: Bazel does NOT require a JDK/JRE runtime to run. It has its built-in runtime in the executable itself. We don't need to worry about JDK versions at all.
5. It is the officially recommended way to get Bazel, kind of like rustup for Rust or ghcup for GHC.

I'm glad to take responsibility for this task if accepted.