bazel: use prebuilt Go toolchain (go.dev/dl) (#2796)

We had to switch to a Go toolchain from nixpkgs,
since prebuilt Go toolchain versions were not usable on NixOS.
Since Go 1.21, the prebuilt Go toolchain is statically linked
and works out of the box.

Reference: https://github.com/golang/go/issues/57007
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Malte Poll 2024-01-05 11:52:22 +01:00 committed by GitHub
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@ -3,15 +3,8 @@
## Steps
1. Replace "1.xx.x" with the new version (see [example](https://github.com/edgelesssys/constellation/commit/9e1a0c06bfda0171958f0776633a9a53f521144d))
2. Update the nix hash
Replace "1.xx.x" with the new version in [WORKSPACE.bazel](/WORKSPACE.bazel):
Once updated run `bazel run //:tidy` and you will see a failure such as:
```
> error: hash mismatch in fixed-output derivation '/nix/store/r85bdj6vrim7m5vlybdmzgca7d0kcb4n-go1.21.4.src.tar.gz.drv':
> specified: sha256-GG8rb4yLcE5paCGwmrIEGlwe4T3LwxVqE63PdZMe5Ig=
> got: sha256-R7Jqg9K2WjwcG8rOJztpvuSaentRaKdgTe09JqN714c=
```
Simple replace the hash with the got value.
3. Ask @katexochen to build the thing and push it into his cache.
```starlark
go_register_toolchains(version = "1.xx.x")
```