From 50c247a210a4dd3014d20c9489836e2b0a2bbabe Mon Sep 17 00:00:00 2001
From: Marco Munizaga <git@marcopolo.io>
Date: Thu, 18 Sep 2025 18:14:30 -0700
Subject: [PATCH] allow checking if a Provide is Nil

---
 di.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/di.go b/di.go
index 43607ff817d2568005e70334df48b07f644d5f27..2aa1d5b3b8e82ce1427931ca35dfc059a353f2fb 100644
--- a/di.go
+++ b/di.go
@@ -38,6 +38,7 @@ import (
 type Provide[Out any] struct {
 	fOrV any
 	set  bool
+	Nil  bool
 }
 
 // Optional is the canonical way of specifying a field is optional. The library
@@ -99,6 +100,7 @@ func NewProvide[Out any](ctorOrVal any) (Provide[Out], error) {
 
 	if ctorOrVal == nil {
 		if canBeNil(outType) {
+			out.Nil = true
 			return out, nil
 		}
 		return zero, fmt.Errorf("Provide[%v]: nil not valid for non-nilable type", outType)