_content/doc: add release notes for toolchaintrace
For: golang/go#63939
Updates: golang/go#68545
Change-Id: I1ee3eae7dd93e09350ebc2febe19535adbbf8a76
Reviewed-on: https://go-review.googlesource.com/c/website/+/634275
Auto-Submit: Sam Thanawalla <samthanawalla@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
diff --git a/_content/doc/go1.24.md b/_content/doc/go1.24.md
index 9feeac4..d3ef2b2 100644
--- a/_content/doc/go1.24.md
+++ b/_content/doc/go1.24.md
@@ -77,6 +77,11 @@
A +dirty suffix will be appended if there are uncommitted VCS changes present.
Use the `-buildvcs=false` flag to omit version control information from the binary.
+<!-- go.dev/issue/63939 -->
+
+The new [GODEBUG setting](/doc/godebug) [`toolchaintrace=1`](/doc/toolchain#select)
+can be used to trace the `go` command's toolchain selection process.
+
### Cgo {#cgo}
<!-- go.dev/issue/56378, CL 579955 -->
