rules_nixpkgs broken with the latest rules_go

[DolceTriade]

Describe the bug
If you try to build a go using rules_nixpkgs and rules_go 0.42.0, the rules_go builder will panic with:

rulesGoStdlibPrefix should have been set via -X

To Reproduce
Build any go package with rules_nixpkgs and rules_go 0.42.0

Expected behavior
Not panic

Additional context

diff --git a/toolchains/go/go.bzl b/toolchains/go/go.bzl
index cb0f26a..179cd9c 100644
--- a/toolchains/go/go.bzl
+++ b/toolchains/go/go.bzl
@@ -212,6 +212,7 @@ go_sdk_build = """
 load("@{rules_go}//go/private/rules:binary.bzl", "go_tool_binary")
 load("@{rules_go}//go/private/rules:sdk.bzl", "package_list")
 load("@{rules_go}//go:def.bzl", "go_sdk")
+load("@{rules_go}//go/private:common.bzl", "RULES_GO_STDLIB_PREFIX")
 load("@{helpers}//:go_sdk.bzl", "go_sdk_for_arch")
 load(":go_version.bzl", "go_version")

@@ -237,6 +238,7 @@ filegroup(
 go_tool_binary(
     name = "builder",
     srcs = ["@{rules_go}//go/tools/builders:builder_srcs"],
+    ldflags = "-X main.rulesGoStdlibPrefix=%s"% RULES_GO_STDLIB_PREFIX,
     sdk = ":go_sdk",
 )

--
2.39.2

Fixes the issue.

bazel-contrib/rules_go@c2406b2 makes the change.

The reason this is an issue and not a PR because I'm not sure the best way to handle this change across different rules_go versions.

[malt3]

There is this PR but I'm also very much uncertain how to handle this breaking change #422

Also this is the same issue as #421

[DolceTriade]

We can dupe this then.