Add Nix dev shell

Co-Authored-By: stringintech <[email protected]>

Author: starius

README.md

@@ -44,7 +44,9 @@ This command will configure Bitcoin Core's CMake build system and statically com
 [macOS](./depend/bitcoin/doc/build-osx.md),
 [Windows](./depend/bitcoin/doc/build-windows.md))
 
-**Addtional note for Windows:** MinGW toolchain is required. CGo uses GCC on Windows, so static linking requires the library to be compiled with GCC/MinGW rather than MSVC for ABI compatibility.
+**Additional notes:**
+- **For Windows:** MinGW toolchain is required. CGo uses GCC on Windows, so static linking requires the library to be compiled with GCC/MinGW rather than MSVC for ABI compatibility.
+- **For Nix users:** Run `nix develop` to automatically get all the build and runtime dependencies, then run `make build-kernel` and continue with the remaining steps in the Nix dev shell.
 
 ### Step 3: Run Tests
 

flake.lock

@@ -0,0 +1,30 @@
+{
+  description = "go-bitcoinkernel";
+
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-25.05";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+        };
+        nativeDeps = with pkgs; [
+          cmake
+          go_1_23
+          golangci-lint
+        ];
+        runtimeDeps = with pkgs; [
+          boost
+        ];
+      in
+      {
+        devShells.default = pkgs.mkShell {
+          nativeBuildInputs = nativeDeps;
+          buildInputs = runtimeDeps;
+        };
+      });
+}