nix: don't use naersik to build package

.gitignore

@@ -2,3 +2,5 @@
 
 .env*
 !.env.example
+
+.direnv

flake.lock

@@ -1,39 +1,6 @@
 {
   "nodes": {
-    "naersk": {
-      "inputs": {
-        "nixpkgs": "nixpkgs"
-      },
-      "locked": {
-        "lastModified": 1655042882,
-        "narHash": "sha256-9BX8Fuez5YJlN7cdPO63InoyBy7dm3VlJkkmTt6fS1A=",
-        "owner": "nix-community",
-        "repo": "naersk",
-        "rev": "cddffb5aa211f50c4b8750adbec0bbbdfb26bb9f",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "ref": "master",
-        "repo": "naersk",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
-      "locked": {
-        "lastModified": 1659190188,
-        "narHash": "sha256-LudYrDFPFaQMW0l68TYkPWRPKmqpxIFU1nWfylIp9AQ=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "a3fddd46a7f3418d7e3940ded94701aba569161d",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "type": "indirect"
-      }
-    },
-    "nixpkgs_2": {
       "locked": {
         "lastModified": 1659190188,
         "narHash": "sha256-LudYrDFPFaQMW0l68TYkPWRPKmqpxIFU1nWfylIp9AQ=",
@@ -51,8 +18,7 @@
     },
     "root": {
       "inputs": {
-        "naersk": "naersk",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": "nixpkgs",
         "utils": "utils"
       }
     },

flake.nix

@@ -1,46 +1,41 @@
 {
   inputs = {
-    naersk.url = "github:nix-community/naersk/master";
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
     utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs, utils, naersk }:
-    utils.lib.eachDefaultSystem (system:
-      let
-        name = "vnetod";
-        pkgs = import nixpkgs { inherit system; };
-        naersk-lib = pkgs.callPackage naersk { };
-      in
-      rec {
-        # Executes by `nix build .#<name>`
-        packages = {
-         ${name} = naersk.lib.${system}.buildPackage {
-            pname = name;
-            root = ./.;
-          };
-        };
-        # Executes by `nix build .`
-        packages.default = packages.${name};
-        # the same but deprecated in Nix 2.7
-        defaultPackage = packages.default;
+  outputs = { self, nixpkgs, utils }:
+    let
+      cargoToml = with builtins; (fromTOML (readFile ./Cargo.toml));
 
-        # Executes by `nix run .#<name> -- <args?>` 
-        apps = {
-          ${name} = utils.lib.mkApp {
-            inherit name;
-            drv = packages.${name};
-          };
-        };
-        # Executes by `nix run . -- <args?>`
-        apps.default = apps.${name};
-        # the same but deprecated in Nix 2.7
-        defaultApp = apps.default;
+      version = "${cargoToml.package.version}_${builtins.substring 0 8 self.lastModifiedDate}_${self.shortRev or "dirty"}";
+    in
+    utils.lib.eachDefaultSystem
+      (system:
+        let
+          inherit (nixpkgs) lib;
+          pkgs = import nixpkgs { inherit system; };
 
-        # Used by `nix develop`
-        devShell = with pkgs; mkShell {
-          buildInputs = [ cargo rustc rustfmt pre-commit rustPackages.clippy ];
-          RUST_SRC_PATH = rustPlatform.rustLibSrc;
-        };
-      });
+          vnetod = pkgs.rustPlatform.buildRustPackage {
+            name = "vnetod-${version}";
+
+            src = lib.cleanSource ./.;
+            cargoLock.lockFile = ./Cargo.lock;
+
+            doCheck = true;
+          };
+        in
+        {
+          apps.default = {
+            type = "app";
+            program = "${vnetod}/bin/vnetod";
+          };
+
+          packages.default = vnetod;
+
+          devShell = pkgs.mkShell {
+            packages = with pkgs; [ cargo rustc rustfmt clippy rust-analyzer ];
+            RUST_SRC_PATH = pkgs.rustPlatform.rustLibSrc;
+          };
+        });
 }