tree 9649ac90bbdbe248e2013349d4a560c52b37c4a9
parent a92027e249c0e421f9b19c1d2a4569a3622f5082
author Rob Findley <rfindley@google.com> 1725458527 +0000
committer Robert Findley <rfindley@google.com> 1726067808 +0000

all: use the previous major Go release to bootstrap the build

To avoid having to maintain GO_BOOTSTRAP_VERSION in the playground
Dockerfile, always use the latest "published" minor of the previous Go
release as the bootstrap version, which per golang/go#54265 should
always be a sufficiently recent bootstrap version.

Here "published" means that the toolchain must exist, since it will be
downloaded for bootstrap. To enable this, add a `-toolchain` flag to the
latestgo command, which selects versions from the set of published
toolchains, rather than from Gerrit tags.

Fixes golang/go#69238

Change-Id: Ib4d4d7f2c0d5c4fbdccfec5d8bb83c040e0c5384
Reviewed-on: https://go-review.googlesource.com/c/playground/+/610675
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>