Setup flake to produce project.

examples/config.yaml

@@ -20,6 +20,7 @@ packages:
     - $HOME/.bash_profile
     - $HOME/.bashrc
   home-manager:
+    - $HOME/.config/nixpkgs/flake.nix
     - $HOME/.config/nixpkgs/home.nix
   homesync:
     - $HOME/.homesync.yml

flake.lock

@@ -1,5 +1,26 @@
 {
   "nodes": {
+    "cargo2nix": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      },
+      "locked": {
+        "lastModified": 1638423893,
+        "narHash": "sha256-+NTV613zwK1G4UIKrj0gh1fYDvi85qO0wxy6h11azuY=",
+        "owner": "cargo2nix",
+        "repo": "cargo2nix",
+        "rev": "ae8a5e699f57b446f9507b97a3c97a4e9fe06aa3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cargo2nix",
+        "ref": "master",
+        "repo": "cargo2nix",
+        "type": "github"
+      }
+    },
     "flake-utils": {
       "locked": {
         "lastModified": 1638122382,
@@ -15,7 +36,38 @@
         "type": "github"
       }
     },
+    "flake-utils_2": {
+      "locked": {
+        "lastModified": 1638122382,
+        "narHash": "sha256-sQzZzAbvKEqN9s0bzWuYmRaA03v40gaJ4+iL1LXjaeI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "74f7e4319258e287b0f9cb95426c9853b282730b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
+      "locked": {
+        "lastModified": 1638109994,
+        "narHash": "sha256-OpA37PTiPMIqoRJbufbl5rOLII7HeeGcA0yl7FoyCIE=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "a284564b7f75ac4db73607db02076e8da9d42c9d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "release-21.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
       "locked": {
         "lastModified": 1640572776,
         "narHash": "sha256-pWMTubBy1Ep31iuQ5lEKW2mjSHWEvcbvy9uHVch2764=",
@@ -33,8 +85,58 @@
     },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
+        "cargo2nix": "cargo2nix",
-        "nixpkgs": "nixpkgs"
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs_2",
+        "rust-overlay": "rust-overlay_2"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": [
+          "cargo2nix",
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "cargo2nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1638152159,
+        "narHash": "sha256-Q0UHsm36cCxk16I/bF1rHJHxjIflESKk2ej76P39j90=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "d9a664513558376595e838b21348cdac0ba3115e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "rust-overlay_2": {
+      "inputs": {
+        "flake-utils": [
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1641696140,
+        "narHash": "sha256-Q7bQ0MSq201ah4Q+3SznEmMR4Kn9pY6ta8pL6KAjZ78=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "a1b1977429de5d69a332dd87700ffb00525335f9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
       }
     }
   },

flake.nix

@@ -4,13 +4,37 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-21.11";
     flake-utils.url = "github:numtide/flake-utils";
+    cargo2nix.url = "github:cargo2nix/cargo2nix/master";
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+      };
+    };
   };
 
-  outputs = { self, nixpkgs, flake-utils }:
+  outputs = { self, nixpkgs, flake-utils, cargo2nix, rust-overlay }:
     flake-utils.lib.eachDefaultSystem (system:
       let
-        pkgs = nixpkgs.legacyPackages.${system};
+        pkgs = import nixpkgs {
-      in {
+          inherit system;
+          overlays = [
+            (import "${cargo2nix}/overlay") rust-overlay.overlay
+          ];
+        };
+
+        rustPkgs = pkgs.rustBuilder.makePackageSet' {
+          rustChannel = "1.56.1";
+          packageFun = import ./Cargo.nix;
+        };
+      in rec {
+        packages = {
+          homesync = (rustPkgs.workspace.homesync {}).bin;
+        };
+
+        defaultPackage = packages.homesync;
+
         devShell = with pkgs; mkShell {
           buildInputs = [
             cargo