diff --git a/flake.nix b/flake.nix
index 2ffc5cb..01183ed 100644
--- a/flake.nix
+++ b/flake.nix
@@ -140,12 +140,12 @@
             # ];
             buildInputs = with pkgs;
               []
-              ++ (lib.optionals pkgs.stdenv.isDarwin [
+              ++ (lib.optionals pkgs.stdenv.hostPlatform.isDarwin [
                 libiconv
                 apple-sdk_26
               ]);
           }
-          // (lib.optionalAttrs pkgs.stdenv.isLinux {
+          // (lib.optionalAttrs pkgs.stdenv.hostPlatform.isLinux {
             # BINDGEN_EXTRA_CLANG_ARGS = "-I${pkgs.llvmPackages.libclang.lib}/lib/clang/18/include";
           });
         cargoArtifacts = craneLib.buildPackage commonArgs;
@@ -184,7 +184,7 @@
                 partitionType = "count";
               });
           }
-          // lib.optionalAttrs (!pkgs.stdenv.isDarwin) {
+          // lib.optionalAttrs (!pkgs.stdenv.hostPlatform.isDarwin) {
             "${name}-llvm-cov" = craneLibLLvmTools.cargoLlvmCov (commonArgs // {inherit cargoArtifacts;});
           };
 
@@ -213,7 +213,7 @@
                   binaryen
                   tailwindcss_4
                 ]
-                ++ (lib.optionals pkgs.stdenv.isDarwin [
+                ++ (lib.optionals pkgs.stdenv.hostPlatform.isDarwin [
                   apple-sdk_26
                 ]);
             });