what have I done

flake.lock

@@ -1,9 +1,193 @@
 {
   "nodes": {
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-compat_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "neovim-nightly-overlay",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1719994518,
+        "narHash": "sha256-pQMhCCHyQGRzdfAkdJ4cIWiw+JNuWsTX7f0ZYSyz0VY=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "9227223f6d922fee3c7b190b2cc238a99527bbb7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "flake-parts_2": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "neovim-nightly-overlay",
+          "hercules-ci-effects",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1712014858,
+        "narHash": "sha256-sB4SWl2lX95bExY2gMFG5HIzvva5AVMJd4Igm+GpZNw=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "9126214d0a59633752a136528f5f3b9aa8565b7d",
+        "type": "github"
+      },
+      "original": {
+        "id": "flake-parts",
+        "type": "indirect"
+      }
+    },
+    "git-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "neovim-nightly-overlay",
+          "nixpkgs"
+        ],
+        "nixpkgs-stable": [
+          "neovim-nightly-overlay",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1720524665,
+        "narHash": "sha256-ni/87oHPZm6Gv0ECYxr1f6uxB0UKBWJ6HvS7lwLU6oY=",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "8d6a17d0cdf411c55f12602624df6368ad86fac1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "neovim-nightly-overlay",
+          "git-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
+    "hercules-ci-effects": {
+      "inputs": {
+        "flake-parts": "flake-parts_2",
+        "nixpkgs": [
+          "neovim-nightly-overlay",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1719226092,
+        "narHash": "sha256-YNkUMcCUCpnULp40g+svYsaH1RbSEj6s4WdZY/SHe38=",
+        "owner": "hercules-ci",
+        "repo": "hercules-ci-effects",
+        "rev": "11e4b8dc112e2f485d7c97e1cee77f9958f498f5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "hercules-ci-effects",
+        "type": "github"
+      }
+    },
+    "neovim-nightly-overlay": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "flake-parts": "flake-parts",
+        "git-hooks": "git-hooks",
+        "hercules-ci-effects": "hercules-ci-effects",
+        "neovim-src": "neovim-src",
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1720861673,
+        "narHash": "sha256-gh34LtCLvXCd/Xyk33mgQU3QqNyJ7ZwJj59c4Qdad78=",
+        "owner": "nix-community",
+        "repo": "neovim-nightly-overlay",
+        "rev": "34b8101a10dfb4cb38832a17ef33281d59e2b2b3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "neovim-nightly-overlay",
+        "type": "github"
+      }
+    },
+    "neovim-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1720816717,
+        "narHash": "sha256-C8bdG2wrI29afHI1705W37M7CPudz5117YafiBlW0Y4=",
+        "owner": "neovim",
+        "repo": "neovim",
+        "rev": "10256bb760fcab0dc25f7eb5b0b45966cb771939",
+        "type": "github"
+      },
+      "original": {
+        "owner": "neovim",
+        "repo": "neovim",
+        "type": "github"
+      }
+    },
     "nix-darwin": {
       "inputs": {
         "nixpkgs": [
-          "nixpkgs"
+          "nixpkgs-darwin"
         ]
       },
       "locked": {
@@ -20,13 +204,13 @@
         "type": "github"
       }
     },
-    "nixpkgs": {
+    "nixos-unstable": {
       "locked": {
-        "lastModified": 1719848872,
+        "lastModified": 1720957393,
-        "narHash": "sha256-H3+EC5cYuq+gQW8y0lSrrDZfH71LB4DAf+TDFyvwCNA=",
+        "narHash": "sha256-oedh2RwpjEa+TNxhg5Je9Ch6d3W1NKi7DbRO1ziHemA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "00d80d13810dbfea8ab4ed1009b09100cca86ba8",
+        "rev": "693bc46d169f5af9c992095736e82c3488bf7dbb",
         "type": "github"
       },
       "original": {
@@ -36,10 +220,78 @@
         "type": "github"
       }
     },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1720750130,
+        "narHash": "sha256-y2wc7CdK0vVSIbx7MdVoZzuMcUoLvZXm+pQf2RIr1OU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "6794d064edc69918bb0fc0e0eda33ece324be17a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-darwin": {
+      "locked": {
+        "lastModified": 1720970785,
+        "narHash": "sha256-gRyLiF5ae1822DFjfOp+6+c/sexYz0BmsNGpxYnDUWM=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "fa4dd14e99394b6888a3913af42a04a9110e3bcc",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-24.05-darwin",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1721016451,
+        "narHash": "sha256-Cypl9ORr5UjtBsbjXMTJRepTe362yNVrPrntUvHiTaw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "a14c5d651cee9ed70f9cd9e83f323f1e531002db",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1720954236,
+        "narHash": "sha256-1mEKHp4m9brvfQ0rjCca8P1WHpymK3TOr3v34ydv9bs=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "53e81e790209e41f0c1efa9ff26ff2fd7ab35e27",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
+        "neovim-nightly-overlay": "neovim-nightly-overlay",
         "nix-darwin": "nix-darwin",
-        "nixpkgs": "nixpkgs"
+        "nixos-unstable": "nixos-unstable",
+        "nixpkgs": "nixpkgs_2",
+        "nixpkgs-darwin": "nixpkgs-darwin",
+        "nixpkgs-unstable": "nixpkgs-unstable"
       }
     }
   },

flake.nix

@@ -3,22 +3,36 @@
   description = "flake for mira::{auxin, leptin, gastrin}";
 
   inputs = {
-    nixpkgs = {
+   nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
+    nixos-unstable = {
       url = "github:NixOS/nixpkgs/nixos-unstable";
+      inputs.nixpkgs.follows = "nixos-unstable";
     };
+    nixpkgs-unstable = {
+      url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+      inputs.nixpkgs.follows = "nixpkgs-unstable";
+    };
+   nixpkgs-darwin.url = "github:NixOS/nixpkgs/nixpkgs-24.05-darwin";
+   neovim-nightly-overlay.url = "github:nix-community/neovim-nightly-overlay";
     nix-darwin = {
       url = "github:LnL7/nix-darwin";
-      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.nixpkgs.follows = "nixpkgs-darwin";
     };
   };
 
-  outputs = inputs@{
+  outputs = {
     self,
-    nixpkgs,
+    nixos-unstable,
+    nixpkgs-darwin,
     nix-darwin,
-  }: {
+    nixpkgs-unstable,
+    ...
+  }@inputs: 
+  let overlays = [inputs.neovim-nightly-overlay.overlays.default];
+  in
+  {
     nixosConfigurations = {
-      auxin = nixpkgs.lib.nixosSystem {
+      auxin = nixpkgs-unstable.lib.nixosSystem {
         system = "x86_64-linux";
         modules = [
           ./auxin/configuration.nix
@@ -26,12 +40,16 @@
       };
     };
     darwinConfigurations = {
+
       leptin = nix-darwin.lib.darwinSystem {
         system = "aarch64-darwin";
         modules = [
           ./leptin/configuration.nix
+          {nixpkgs.overlays = overlays;}
         ];
+        specialArgs = { inherit nixpkgs-darwin; inherit nix-darwin; inherit inputs; inherit nixpkgs-unstable; };
       };
     };
   };
 }
+

leptin/configuration.nix

@@ -1,10 +1,11 @@
 {
+  inputs,
   config,
   lib,
   pkgs,
   ...
-}: {
+}:
-  imports = [];
+{
 
   nix = {
     package = pkgs.nixFlakes;
@@ -17,6 +18,13 @@
   networking = {
     hostName = "leptin";
   };
+  nixpkgs.config = {
+    packageOverrides = pkgs: with pkgs; {
+      unstable = import unstableChannel {
+        config = config.nixpkgs.config;
+      };
+    };
+  };
   time.timeZone = "America/New_York";
   environment.systemPackages = with pkgs; [
     caddy
@@ -28,7 +36,8 @@
     difftastic
     btop
     alejandra
-    neovim
+    inputs.neovim-nightly-overlay.packages.${pkgs.system}.default
+    fastfetch
     hyperfine
     lazygit
     docker
@@ -45,6 +54,7 @@
     fzf
     mcfly
     wget
+    inputs.nixpkgs-unstable.legacyPackages.${pkgs.system}.nh
   ];
   programs = {
     # nh = {