From 5833d2d46ffa8b60e08518de165935f7b7f80741 Mon Sep 17 00:00:00 2001
From: Robert Hensing <robert@roberthensing.nl>
Date: Wed, 28 May 2025 18:09:41 +0200
Subject: [PATCH] makeDerivation: Define a version of override to require a
 prev version

Setting a previously unset `version` attribute is hardly an override,
and more likely just a feature of constructing a package in steps.
---
 pkgs/stdenv/generic/make-derivation.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/stdenv/generic/make-derivation.nix b/pkgs/stdenv/generic/make-derivation.nix
index e9760ee1be27..9b7fdddb8683 100644
--- a/pkgs/stdenv/generic/make-derivation.nix
+++ b/pkgs/stdenv/generic/make-derivation.nix
@@ -95,6 +95,7 @@ let
                 thisOverlay = overlay final prev;
                 warnForBadVersionOverride = (
                   thisOverlay ? version
+                  && prev ? version
                   && !(thisOverlay ? src)
                   && !(thisOverlay.__intentionallyOverridingVersion or false)
                 );