nix: fix build

flake.nix

@@ -1,14 +1,19 @@
 {
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-unstable";
 
-  outputs = {nixpkgs, ...}: let
+  outputs = {
+    self,
+    nixpkgs,
+    ...
+  }: let
     systems = ["x86_64-linux" "aarch64-linux"];
     forEachSystem = nixpkgs.lib.genAttrs systems;
 
     pkgsForEach = nixpkgs.legacyPackages;
   in rec {
     packages = forEachSystem (system: {
-      default = pkgsForEach.${system}.callPackage ./nix/package.nix {};
+      mrc = pkgsForEach.${system}.callPackage ./nix/package.nix {};
+      default = self.packages.${system}.mrc;
     });
 
     devShells = forEachSystem (system: {

nix/package.nix

@@ -1,13 +1,16 @@
 {
   lib,
   rustPlatform,
+  pkg-config,
+  openssl,
 }: let
   fs = lib.fileset;
   s = ../.;
 in
   rustPlatform.buildRustPackage (finalAttrs: {
     pname = "mrc";
-    version = "0.1.0";
+    version = (builtins.fromTOML (builtins.readFile (s + /Cargo.toml))).package.version;
+
     src = fs.toSource {
       root = s;
       fileset = fs.unions [
@@ -17,10 +20,23 @@ in
       ];
     };
 
-    cargoLock.lockFile = finalAttrs.src + /Cargo.lock;
+    strictDeps = true;
+    enableParallelBuilding = true;
+
+    nativeBuildInputs = [
+      pkg-config
+    ];
+
+    buildInputs = [
+      openssl
+    ];
+
+    cargoLock.lockFile = "${finalAttrs.src}/Cargo.lock";
+    useFetchCargoVendor = true;
 
     meta = {
-      description = "IPC wrapper & command-line controller for MPV, the video player ";
+      description = "IPC wrapper & command-line controller for MPV, the video player";
+      homePage = "https://github.com/notashelf/mrc";
       mainProgram = "mrc";
       license = lib.licenses.mpl20;
       maintainers = [lib.maintainers.NotAShelf];