dtach: fix build with gcc 15

Signed-off-by: Marcin Serwin <marcin@serwin.dev>

pkgs/by-name/dt/dtach/package.nix

@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchurl,
+  fetchpatch2,
 }:
 
 stdenv.mkDerivation rec {
@@ -13,6 +14,13 @@ stdenv.mkDerivation rec {
     sha256 = "1wwj2hlngi8qn2pisvhyfxxs8gyqjlgrrv5lz91w8ly54dlzvs9j";
   };
 
+  patches = [
+    (fetchpatch2 {
+      url = "https://github.com/crigler/dtach/commit/6d80909a8c0fd19717010a3c76fec560f988ca48.patch?full_index=1";
+      hash = "sha256-v3vToJdSwihiPCSjXjEJghiaynHPTEql3F7URXRjCbM=";
+    })
+  ];
+
   installPhase = ''
     mkdir -p $out/bin
     cp dtach $out/bin/dtach