From 9e57ab72fca760eccb4efbab190cb8240ca1329d Mon Sep 17 00:00:00 2001
From: Katrina Verey <katrina.verey@shopify.com>
Date: Mon, 28 Mar 2022 15:12:12 -0400
Subject: [PATCH] Copy newer Go into goreleaser image

---
 releasing/cloudbuild.yaml   | 10 ++++++++++
 releasing/run-goreleaser.sh | 12 ++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/releasing/cloudbuild.yaml b/releasing/cloudbuild.yaml
index 3349ecc6cb..8ed4621c9a 100644
--- a/releasing/cloudbuild.yaml
+++ b/releasing/cloudbuild.yaml
@@ -37,6 +37,14 @@ steps:
   - checkout
   - $TAG_NAME
 
+# Copy a newer version of Go into the goreleaser workspace.
+# Use the same source image as the builder in kustomize.Dockerfile
+- name: golang:alpine
+  entrypoint: /bin/sh
+  args:
+  - '-c'
+  - 'mkdir -p /workspace/bin && cp $(go env GOROOT)/bin/go /workspace/bin'
+
 # Run goreleaser indirectly via a shell script
 # to configure it properly.
 - name: goreleaser/goreleaser:v0.179.0
@@ -44,6 +52,8 @@ steps:
   entrypoint: /bin/sh
   dir: myClone
   secretEnv: ['GITHUB_TOKEN']
+  env:
+  - 'GO_BINARY_PATH=/workspace/bin/go'
   args:
   - releasing/cloudbuild.sh
   - $TAG_NAME
diff --git a/releasing/run-goreleaser.sh b/releasing/run-goreleaser.sh
index f377ceef9d..7f51728de4 100755
--- a/releasing/run-goreleaser.sh
+++ b/releasing/run-goreleaser.sh
@@ -51,6 +51,16 @@ echo "module=$module"
 semVer=${fullTag#$module/}
 echo "semVer=$semVer"
 
+# Because of https://github.com/kubernetes-sigs/kustomize/issues/4542
+# we need to manually install a newer version of Go into an older goreleaser image.
+# This points goreleaser to that version of Go, or the version discovered from PATH if unspecified.
+goBinary="go"
+if [[ -n "${GO_BINARY_PATH:-}" ]]; then
+    echo "GO_BINARY_PATH is set, using go version from $GO_BINARY_PATH"
+    goBinary="$GO_BINARY_PATH"
+fi
+sh -c "$goBinary version"
+
 # Generate the changelog for this release
 # using the last two tags for the module
 changeLogFile=$(mktemp)
@@ -101,6 +111,8 @@ builds:
     -X sigs.k8s.io/kustomize/api/provenance.gitCommit={{.Commit}}
     -X sigs.k8s.io/kustomize/api/provenance.buildDate={{.Date}}
 
+  gobinary: ${goBinary}
+
   goos:
   - linux
   - darwin