From 0b80569b400c52dcd05cfb20625c9129078355cf Mon Sep 17 00:00:00 2001
From: Jonathan Davies <jpds@protonmail.com>
Date: Wed, 25 Feb 2026 23:25:17 +0000
Subject: [PATCH 1/2] b3sum: Add `versionCheckHook`

---
 pkgs/by-name/b3/b3sum/package.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/by-name/b3/b3sum/package.nix b/pkgs/by-name/b3/b3sum/package.nix
index 8b079ab90923..0a486ae3b6c8 100644
--- a/pkgs/by-name/b3/b3sum/package.nix
+++ b/pkgs/by-name/b3/b3sum/package.nix
@@ -2,6 +2,7 @@
   lib,
   fetchCrate,
   rustPlatform,
+  versionCheckHook,
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -15,6 +16,11 @@ rustPlatform.buildRustPackage rec {
 
   cargoHash = "sha256-w9l8dn4Ahck3NXuN4Ph9qmGoS767/mQRBgO9AT0CH3Y=";
 
+  nativeInstallCheckInputs = [
+    versionCheckHook
+  ];
+  doInstallCheck = true;
+
   meta = {
     description = "BLAKE3 cryptographic hash function";
     mainProgram = "b3sum";

From c1b7477b5deea391e2e99f16ca3c66a6a1443899 Mon Sep 17 00:00:00 2001
From: Jonathan Davies <jpds@protonmail.com>
Date: Wed, 25 Feb 2026 23:23:27 +0000
Subject: [PATCH 2/2] b3sum: Use finalAttrs

---
 pkgs/by-name/b3/b3sum/package.nix | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/pkgs/by-name/b3/b3sum/package.nix b/pkgs/by-name/b3/b3sum/package.nix
index 0a486ae3b6c8..1892f136599e 100644
--- a/pkgs/by-name/b3/b3sum/package.nix
+++ b/pkgs/by-name/b3/b3sum/package.nix
@@ -5,12 +5,12 @@
   versionCheckHook,
 }:
 
-rustPlatform.buildRustPackage rec {
+rustPlatform.buildRustPackage (finalAttrs: {
   pname = "b3sum";
   version = "1.8.3";
 
   src = fetchCrate {
-    inherit version pname;
+    inherit (finalAttrs) version pname;
     hash = "sha256-mU2r5xbYf6A1RibWqhow/637YxybCFMT3UzYcUMjhdg=";
   };
 
@@ -33,6 +33,6 @@ rustPlatform.buildRustPackage rec {
       cc0
       asl20
     ];
-    changelog = "https://github.com/BLAKE3-team/BLAKE3/releases/tag/${version}";
+    changelog = "https://github.com/BLAKE3-team/BLAKE3/releases/tag/${finalAttrs.version}";
   };
-}
+})