flake: setup build with rust-overlay and naersk

flake.lock

@@ -15,13 +15,60 @@
         "type": "github"
       }
     },
+    "flake-utils_2": {
+      "locked": {
+        "lastModified": 1623875721,
+        "narHash": "sha256-A8BU7bjS5GirpAUv4QA+QnJ4CceLHkcXdRp4xITDB0s=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "f7e004a55b120c02ecb6219596820fcd32ca8772",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "naersk": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1631004250,
+        "narHash": "sha256-LGh0CjAZwh13AVkTi9w9lITEC7x6bwSQyFViOZ6HyNo=",
+        "owner": "nix-community",
+        "repo": "naersk",
+        "rev": "08afb3d1dbfe016108b72e05b02ba0f6ecb3c8e1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "naersk",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1630500761,
+        "lastModified": 1631369477,
-        "narHash": "sha256-xjEjZro342lUPd5Z/fFwdAX1dMXXZ3tvPGqMpqs0U20=",
+        "narHash": "sha256-IE6i3dZ5jFHpJXS+FawK2raPIfr9lPAI9FcgAsolLkg=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "6cc260cfd60f094500b79e279069b499806bf6d8",
+        "rev": "98bfb51d00a2e5b94cf9aa5d56e7eaa82001387e",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1631229129,
+        "narHash": "sha256-PL9QDH9E1F7Qkj5sSOsMZqPF5MuQSVR4GMqOXt5WLq4=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9fe2e640cc8540bacc4764892317f908d3562bc3",
         "type": "github"
       },
       "original": {
@@ -31,10 +78,46 @@
         "type": "github"
       }
     },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1628186154,
+        "narHash": "sha256-r2d0wvywFnL9z4iptztdFMhaUIAaGzrSs7kSok0PgmE=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "06552b72346632b6943c8032e57e702ea12413bf",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs"
+        "naersk": "naersk",
+        "nixpkgs": "nixpkgs_2",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs_3"
+      },
+      "locked": {
+        "lastModified": 1631326562,
+        "narHash": "sha256-Tg8e//Nb4FkOFMihg6rQ602aR3F60WJ0LSTqSzpGsQM=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "b0d0959bbbfeb67573c01461e58593d35e7c524d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
       }
     }
   },

flake.nix

@@ -1,23 +1,29 @@
 {
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    naersk.url = "github:nix-community/naersk";
     flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs, flake-utils, ... }:
+  outputs = { self, nixpkgs, rust-overlay, naersk, flake-utils, ... }:
     flake-utils.lib.eachDefaultSystem (system:
       let
-        pkgs = import nixpkgs { inherit system; };
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs { inherit system overlays; };
+        myRust = pkgs.rust-bin.stable.latest.default;
+        naersk-lib = naersk.lib."${system}".override {
+          cargo = myRust;
+          rustc = myRust;
+        };
       in
         {
-          defaultPackage = pkgs.rustPlatform.buildRustPackage {
+          defaultPackage = naersk-lib.buildPackage {
             pname = "prololo-reborn";
             version = "0.1.0";
 
             src = self;
 
-            cargoSha256 = "sha256-dM3lNanFcm/9QggXgQ6MTjPxF57fxeKfR0lSXGv9bVY=";
-
             meta = with pkgs.lib; {
               homepage = "https://github.com/prologin/prololo-reborn";
               license = with licenses; [ mit asl20 ];
@@ -34,20 +40,16 @@
 
           devShell = pkgs.mkShell {
             buildInputs = with pkgs; [
-              cargo
-              clippy
               nixpkgs-fmt
               rust-analyzer
-              rustPackages.clippy
+              myRust
-              rustc
-              rustfmt
 
               cmake
               openssl
               pkg-config
             ];
 
-            RUST_SRC_PATH = pkgs.rustPlatform.rustLibSrc;
+            RUST_SRC_PATH = pkgs.rust-bin.stable.latest.rust-std;
           };
         });
 }