From 8c81baf3f0fb4adea142edb5cacc63893120901f Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Tue, 27 Jan 2026 21:57:15 +0000
Subject: [PATCH] pioasm: fix `gcc-15` build

Without the change the build fails on `master as https://hydra.nixos.org/build/320008755:

    /build/source/tools/pioasm/pio_types.h:290:5: error: 'uint8_t' does not name a type
      290 |     uint8_t used_gpio_ranges = 0;
          |     ^~~~~~~
---
 pkgs/by-name/pi/pioasm/package.nix | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/pkgs/by-name/pi/pioasm/package.nix b/pkgs/by-name/pi/pioasm/package.nix
index b2f1fc751711..c37ca3dba5a9 100644
--- a/pkgs/by-name/pi/pioasm/package.nix
+++ b/pkgs/by-name/pi/pioasm/package.nix
@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchFromGitHub,
+  fetchpatch,
   cmake,
   ninja,
 }:
@@ -16,6 +17,18 @@ stdenv.mkDerivation (finalAttrs: {
     rev = finalAttrs.version;
     hash = "sha256-epO7yw6/21/ess3vMCkXvXEqAn6/4613zmH/hbaBbUw=";
   };
+
+  patches = [
+    # Pull upstream fix for gcc-15:
+    #   https://github.com/raspberrypi/pico-sdk/pull/2468
+    (fetchpatch {
+      name = "gcc-15.patch";
+      url = "https://github.com/raspberrypi/pico-sdk/commit/66540fe88e86a9f324422b7451a3b5dff4c0449f.patch";
+      hash = "sha256-KwTED7/IWorgRTw1XMU2ILJhf6DAioGuVIunlC1QdNE=";
+      stripLen = 2;
+    })
+  ];
+
   sourceRoot = "${finalAttrs.src.name}/tools/pioasm";
 
   nativeBuildInputs = [