Add Nix dev shell and CI job

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ on:
 
 jobs:
   ubuntu:
-    name: Build, Test, and Lint on Ubuntu
+    name: Build and Test on Ubuntu
     runs-on: ubuntu-latest
 
     steps:
@@ -31,11 +31,6 @@ jobs:
     - name: Run tests
       run: make test
 
-    - name: Run linter
-      uses: golangci/golangci-lint-action@v9
-      with:
-        version: v2.6.1
-
   macos:
     name: Build and Test on macOS
     runs-on: macos-latest
@@ -46,7 +41,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.23.3'
+          go-version: '1.23'
 
       - name: Install Boost library
         run: |
@@ -86,7 +81,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.23.3'
+          go-version: '1.23'
 
       - name: Build Kernel
         run: make build-kernel
@@ -96,3 +91,31 @@ jobs:
 
       - name: Run tests
         run: make test
+
+  nix:
+    name: Build, Test, and Lint with Nix (Ubuntu)
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@main
+
+      - name: Setup Nix Cache
+        uses: DeterminateSystems/magic-nix-cache-action@main
+
+      - name: Check flake
+        run: nix flake check --show-trace
+
+      - name: Build Kernel
+        run: nix develop --command make build-kernel
+
+      - name: Build
+        run: nix develop --command make build
+
+      - name: Run tests
+        run: nix develop --command make test
+
+      - name: Run linter
+        run: nix develop --command make lint

Makefile

@@ -43,7 +43,7 @@ lint:
 	golangci-lint run ./...
 
 deps:
-	go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.6.1
+	go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.1.6
 
 update-kernel:
 	git subtree pull --prefix=depend/bitcoin https://github.com/bitcoin/bitcoin.git master --squash

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.nix

@@ -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;
+        };
+      });
+}

go.mod

@@ -1,3 +1,3 @@
 module github.com/stringintech/go-bitcoinkernel
 
-go 1.23.3
+go 1.23