Enable resource references by default (#6202)

CHANGELOG.md

@@ -24,6 +24,9 @@ CHANGELOG
 - [CLI] Avoid panic for diffs with invalid property paths.
   [#6159](https://github.com/pulumi/pulumi/pull/6159)
 
+- Enable resource reference feature by default.
+  [#6202](https://github.com/pulumi/pulumi/pull/6202)
+
 ## 2.18.1 (2021-01-21)
 
 - Revert [#6125](https://github.com/pulumi/pulumi/pull/6125) as it caused a which introduced a bug with serializing resource IDs

pkg/cmd/pulumi/util.go

@@ -72,11 +72,7 @@ func disableProviderPreview() bool {
 }
 
 func disableResourceReferences() bool {
-	// Allow the resource reference feature to be enabled by explicitly setting an env var.
-	if v, ok := os.LookupEnv("PULUMI_ENABLE_RESOURCE_REFERENCES"); ok && cmdutil.IsTruthy(v) {
-		return false
-	}
-	return true
+	return cmdutil.IsTruthy(os.Getenv("PULUMI_DISABLE_RESOURCE_REFERENCES"))
 }
 
 // skipConfirmations returns whether or not confirmation prompts should