Set GOEXPERIMENT=loopvar

Per: https://go.dev/blog/loopvar-preview

I'll revert this once Go 1.22 makes this behavior the default.

.github/workflows/pipeline.yaml

@@ -30,6 +30,7 @@ env:
   # prod "sam package" and "sam deploy" commands.
   # PROD_IMAGE_REPOSITORY = '0123456789.dkr.ecr.region.amazonaws.com/repository-name'
   PROD_REGION: us-east-1
+  GOEXPERIMENT: loopvar
 
 # https://docs.github.com/en/actions/deployment/security-hardening-your-deployments/configuring-openid-connect-in-cloud-providers
 permissions:

.github/workflows/run-tests.yaml

@@ -2,6 +2,9 @@ name: Run Tests
 
 on: [workflow_call, pull_request]
 
+env:
+  GOEXPERIMENT: loopvar
+
 jobs:
   ci:
     name: "Run Tests"

.vscode/settings.json

@@ -1,3 +1,6 @@
 {
-    "go.buildTags": "all_tests"
+    "go.buildTags": "all_tests",
+    "go.testEnvVars": {
+        "GOEXPERIMENT": "loopvar"
+    }
 }

Makefile

@@ -10,29 +10,30 @@ SHELL := /bin/bash
 # https://github.com/aws-samples/sessions-with-aws-sam/tree/master/go-al2
 # https://aws.amazon.com/blogs/compute/migrating-aws-lambda-functions-from-the-go1-x-runtime-to-the-custom-runtime-on-amazon-linux-2/
 build-Function:
-	GOOS=linux GOARCH=arm64 CGO_ENABLED=0 go build -ldflags="-s -w" \
-		-tags lambda.norpc -o $(ARTIFACTS_DIR)/bootstrap lambda/main.go
+	GOEXPERIMENT=loopvar GOOS=linux GOARCH=arm64 CGO_ENABLED=0 go build \
+		-ldflags="-s -w" -tags lambda.norpc \
+		-o $(ARTIFACTS_DIR)/bootstrap lambda/main.go
 
 static-checks:
 	go vet -tags=all_tests ./...
 	go run honnef.co/go/tools/cmd/staticcheck -tags=all_tests ./...
-	go build -tags=all_tests ./...
+	GOEXPERIMENT=loopvar go build -tags=all_tests ./...
 
 small-tests:
-	go test -tags=small_tests ./...
+	GOEXPERIMENT=loopvar go test -tags=small_tests ./...
 
 medium-tests:
-	go test -tags=medium_tests -count=1 ./...
+	GOEXPERIMENT=loopvar go test -tags=medium_tests -count=1 ./...
 
 contract-tests-aws:
-	go test -tags=contract_tests -count=1 ./db -args -awsdb
+	GOEXPERIMENT=loopvar go test -tags=contract_tests -count=1 ./db -args -awsdb
 
 test: static-checks small-tests medium-tests contract-tests-aws
 
 coverage:
-	go test -covermode=count -coverprofile=coverage.out \
+	GOEXPERIMENT=loopvar go test -covermode=count -coverprofile=coverage.out \
 	  -tags=small_tests,coverage_tests ./...
-	go tool cover -html=coverage.out	
+	GOEXPERIMENT=loopvar go tool cover -html=coverage.out	
 
 sam-build: template.yml
 	sam validate