use nim2nix

flake.lock

@@ -1,6 +1,40 @@
 {
   "nodes": {
+    "nim2nix": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1724878933,
+        "narHash": "sha256-VP0+Lal3jJJqDH1EzQX73rP9Ue8ZTIyAErJvDz6PQSg=",
+        "owner": "daylinmorgan",
+        "repo": "nim2nix",
+        "rev": "5153c772e4c6a4f5645efa85ce536fe1c5063ebb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "daylinmorgan",
+        "repo": "nim2nix",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
+      "locked": {
+        "lastModified": 1724479785,
+        "narHash": "sha256-pP3Azj5d6M5nmG68Fu4JqZmdGt4S4vqI5f8te+E/FTw=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "d0e1602ddde669d5beb01aec49d71a51937ed7be",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
       "locked": {
         "lastModified": 1723637854,
         "narHash": "sha256-med8+5DSWa2UnOqtdICndjDAEjxr5D7zaIiK4pn0Q7c=",
@@ -18,7 +52,8 @@
     },
     "root": {
       "inputs": {
-        "nixpkgs": "nixpkgs"
+        "nim2nix": "nim2nix",
+        "nixpkgs": "nixpkgs_2"
       }
     }
   },

flake.nix

@@ -3,10 +3,11 @@
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    nim2nix.url = "github:daylinmorgan/nim2nix";
   };
 
   outputs =
-    { nixpkgs, ... }:
+    { nixpkgs, nim2nix, ... }:
     let
       inherit (nixpkgs.lib) genAttrs;
       systems = [
@@ -15,7 +16,17 @@
         "aarch64-linux"
         "aarch64-darwin"
       ];
-      forAllSystems = f: genAttrs systems (system: f (import nixpkgs { inherit system; }));
+      forAllSystems =
+        f:
+        genAttrs systems (
+          system:
+          f (
+            import nixpkgs {
+              inherit system;
+              overlays = [ nim2nix.overlays.default ];
+            }
+          )
+        );
     in
     {
       packages = forAllSystems (pkgs: rec {

meta.nix

@@ -10,7 +10,6 @@ stdenvNoCC.mkDerivation (finalAttrs: {
   pname = "meta";
   version = "unstable";
 
-  # src = 
   buildInputs = [ tunnel ];
 
   phases = [ "installPhase" ];

tunnel-nim/default.nix

@@ -1,14 +1,14 @@
 {
   lib,
-  buildNimPackage,
   makeWrapper,
+  buildNimblePackage,
 }:
-buildNimPackage {
+buildNimblePackage {
   pname = "tunnel";
   version = "unstable";
 
   src = lib.cleanSource ./.;
-  lockFile = ./lock.json;
   nativeBuildInputs = [ makeWrapper ];
   doCheck = false;
+  nimbleDepsHash = "sha256-9tv/dQ+2H24QkZYuJWpLVH2yvzP8t5GLLbmV0eQOWVk=";
 }