libmcrypt: fix build with gcc14; stegseek: mark broken on darwin, only test on x86_64-linux (#372261)

Author: mweinelt

pkgs/by-name/li/libmcrypt/package.nix

@@ -25,9 +25,10 @@ stdenv.mkDerivation rec {
       "ac_cv_func_realloc_0_nonnull=yes"
     ];
 
-  env = lib.optionalAttrs stdenv.cc.isClang {
-    NIX_CFLAGS_COMPILE = "-Wno-implicit-function-declaration -Wno-implicit-int";
-  };
+  env.NIX_CFLAGS_COMPILE = toString [
+    "-Wno-implicit-function-declaration"
+    "-Wno-implicit-int"
+  ];
 
   meta = {
     description = "Replacement for the old crypt() package and crypt(1) command, with extensions";

pkgs/by-name/st/stegseek/package.nix

@@ -31,9 +31,11 @@ stdenv.mkDerivation rec {
     zlib
   ];
 
-  doCheck = true;
+  # tests get stuck on aarch64-linux
+  doCheck = stdenv.isx86_64 && stdenv.isLinux;
 
   meta = with lib; {
+    broken = stdenv.isDarwin;
     description = "Tool to crack steganography";
     longDescription = ''
       Stegseek is a lightning fast steghide cracker that can be