diff --git a/pkgs/applications/version-management/fnc/default.nix b/pkgs/applications/version-management/fnc/default.nix
index 1ab1d3b84ae2..e07b53854400 100644
--- a/pkgs/applications/version-management/fnc/default.nix
+++ b/pkgs/applications/version-management/fnc/default.nix
@@ -16,6 +16,9 @@ stdenv.mkDerivation (finalAttrs: {
   env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.cc.isGNU [
     # Needed with GCC 12
     "-Wno-error=maybe-uninitialized"
+  ] ++ lib.optionals stdenv.isDarwin [
+    # error: 'strtonum' is only available on macOS 11.0 or newer
+    "-Wno-error=unguarded-availability-new"
   ]);
 
   preInstall = ''
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index c72fc1749793..3171ad4bd6bd 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -31611,7 +31611,7 @@ with pkgs;
 
   fmsynth = callPackage ../applications/audio/fmsynth { };
 
-  fnc = callPackage ../applications/version-management/fnc { };
+  fnc = darwin.apple_sdk_11_0.callPackage ../applications/version-management/fnc { };
 
   focus = callPackage ../tools/X11/focus { };