added nix flake

.gitignore

@@ -0,0 +1 @@
+/result

flake.lock

@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1775423009,
+        "narHash": "sha256-vPKLpjhIVWdDrfiUM8atW6YkIggCEKdSAlJPzzhkQlw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "68d8aa3d661f0e6bd5862291b5bb263b2a6595c9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,67 @@
+{
+  description = "ripsort";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+
+        pname = "ripsort";
+        version = "0.1.0";
+
+        app = pkgs.buildGoModule {
+          inherit pname version;
+          src = ./.;
+
+          vendorHash = "sha256-K40zYmELd2eM29CdOScbRcC0NSrsZRsRGPTPgWRAFPQ=";
+
+          meta = with pkgs.lib; {
+            description = "Organize music library";
+            license = licenses.asl20;
+            mainProgram = pname;
+          };
+        };
+
+      in
+      {
+        packages.default = app;
+        packages.${pname} = app;
+        defaultPackage = app;
+        apps.default = flake-utils.lib.mkApp { drv = app; };
+
+        devShells.default = pkgs.mkShell {
+          name = "${pname}-dev";
+
+          packages = with pkgs; [
+            go
+            gopls
+            gotools
+            golangci-lint
+            delve
+          ];
+
+          env = {
+            GOPATH = "${placeholder "out"}/go";
+            CGO_ENABLED = "0";
+          };
+
+          shellHook = ''
+            echo "Go version: $(go version | awk '{print $3}')"
+          '';
+        };
+
+        devShell = self.devShells.${system}.default;
+      }
+    );
+}