add nix package

linux/nix/pkg/default.nix

@@ -1,9 +1,9 @@
 {
   lib,
+  callPackage,
   libclang,
   flutter,
   src,
-  go,
 }:
 
 flutter.buildFlutterApplication {
@@ -12,16 +12,13 @@ flutter.buildFlutterApplication {
   inherit src;
 
   preBuild = ''
+    cp ${callPackage ./gomuks.nix { inherit src; }}/lib/* .
     packageRunCustom nexus generate source/scripts test
     packageRun build_runner build
   '';
 
   env.LIBCLANG_PATH = lib.makeLibraryPath [ libclang ];
 
-  nativeBuildInputs = [
-    go
-  ];
-
   autoPubspecLock = src + "/pubspec.lock";
 
   gitHashes = {

linux/nix/pkg/gomuks.nix

@@ -0,0 +1,31 @@
+{
+  src,
+  buildGoModule,
+}:
+
+buildGoModule (finalAttrs: {
+  pname = "gomuks-ffi";
+  version = "submodule";
+
+  doCheck = false;
+
+  src = "${src}/gomuks";
+
+  vendorHash = "sha256-zBDfBZqUoHIfZ0AajZEvSBbskjpFB7yIsomt0KYDo7Y=";
+
+  buildPhase = ''
+    runHook preBuild
+
+    go build -buildmode=c-shared -o libgomuks.so -tags goolm,noheic ./pkg/ffi 
+
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    install -D --mode=0644 libgomuks.so --target-directory $out/lib
+
+    runHook postInstall
+  '';
+})