nix flake files

flake.lock

@@ -0,0 +1,42 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1664281702,
+        "narHash": "sha256-haixZ4TJLu1Dciow54wrHrHvlGDVr5sW6MTeAV/ZLuI=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "7e52b35fe98481a279d89f9c145f8076d049d2b9",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-unstable",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "utils": "utils"
+      }
+    },
+    "utils": {
+      "locked": {
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,39 @@
+{
+  description = "TodoMVC in Go";
+
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-unstable";
+    utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, utils }:
+    utils.lib.eachDefaultSystem (system:
+      let
+        lastModifiedDate = self.lastModifiedDate or self.lastModified or "19700101";
+        version = builtins.substring 0 8 lastModifiedDate;
+
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [
+            (final: prev: {
+              go = prev.go_1_19;
+              buildGoModule = prev.buildGo118Module;
+            })
+          ];
+        };
+
+      in {
+        devShell = pkgs.mkShell {
+          buildInputs = with pkgs; [ go gopls gotools go-tools golangci-lint];
+        };
+
+        defaultPackage = pkgs.buildGoModule {
+          pname = "todogo";
+          inherit version;
+
+          src = ./.;
+
+          vendorSha256 = "sha256-pQpattmS9VmO3ZIQUFn66az8GSmB4IvYhTTCFn6SUmo=";
+        };
+      });
+}