Add nix support

.gitignore

@@ -1,2 +1,4 @@
 /target
 *.db*
+/result
+*~

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1772773019,
+        "narHash": "sha256-E1bxHxNKfDoQUuvriG71+f+s/NT0qWkImXsYZNFFfCs=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "aca4d95fce4914b3892661bcb80b8087293536c6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,31 @@
+{
+  description = "mkv";
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  };
+  outputs =
+    { self, nixpkgs }:
+    let
+      system = "x86_64-linux";
+      pkgs = import nixpkgs { inherit system; };
+    in
+    {
+      devShells.${system}.default = pkgs.mkShell {
+        packages = [
+          pkgs.rustc
+          pkgs.cargo
+          pkgs.rustfmt
+          pkgs.rust-analyzer
+        ];
+      };
+      packages.${system}.default = pkgs.rustPlatform.buildRustPackage {
+        pname = "mkv";
+        version = "0.1.0";
+        cargoLock.lockFile = ./Cargo.lock;
+        src = pkgs.lib.cleanSource ./.;
+        nativeBuildInputs = [ pkgs.pkg-config ];
+        buildInputs = [ pkgs.openssl ];
+        doCheck = false;
+      };
+    };
+}