linuxPackages.v86d: fix build (#407173)

pkgs/os-specific/linux/v86d/default.nix

@@ -16,14 +16,17 @@ stdenv.mkDerivation {
   src = fetchFromGitHub {
     owner = "mjanusz";
     repo = "v86d";
-    rev = "v86d-${pversion}";
+    tag = "v86d-${pversion}";
     hash = "sha256-95LRzVbO/DyddmPwQNNQ290tasCGoQk7FDHlst6LkbA=";
   };
 
-  patchPhase = ''
+  postPatch = ''
     patchShebangs configure
   '';
 
+  # GCC 14 makes this an error by default, remove when fixed upstream
+  env.NIX_CFLAGS_COMPILE = "-Wno-implicit-function-declaration -Wno-implicit-int";
+
   configureFlags = [
     "--with-klibc"
     "--with-x86emu"
@@ -37,17 +40,21 @@ stdenv.mkDerivation {
   ];
 
   configurePhase = ''
+    runHook preConfigure
+
     ./configure $configureFlags
+
+    runHook postConfigure
   '';
 
   buildInputs = [ klibc ];
 
-  meta = with lib; {
+  meta = {
     description = "Daemon to run x86 code in an emulated environment";
     mainProgram = "v86d";
     homepage = "https://github.com/mjanusz/v86d";
-    license = licenses.gpl2Only;
-    maintainers = with maintainers; [ codyopel ];
+    license = lib.licenses.gpl2Only;
+    maintainers = with lib.maintainers; [ codyopel ];
     platforms = [
       "i686-linux"
       "x86_64-linux"