Update flake.nix

flake.nix

@@ -1,6 +1,6 @@
 {
   description = "A massively parallel functional runtime.";
-
+  
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
     flake-utils.url = "github:numtide/flake-utils";
@@ -17,7 +17,7 @@
 
         src = builtins.filterSource
           (name: type: builtins.elem (baseNameOf name) [
-            "src" "Cargo.lock" "Cargo.toml" "rust-toolchain.toml"
+            "src", "Cargo.lock", "Cargo.toml", "rust-toolchain.toml"
           ])
           ./.;
 
@@ -28,11 +28,6 @@
             version = "0.1.0";
             src = pkgs.lib.cleanSource src;
             buildInputs = [ pkgs.openssl pkgs.pkg-config ];
-            buildPhase = "cargo build";
-            installPhase = ''
-              mkdir -p $out/bin
-              cp target/release/hvm $out/bin/
-            '';
           };
         };