flake: Switch inputs over to unflake

[`unflake`](https://codeberg.org/goldstein/unflake) allows prefect input
de-dedulication and also gives us in general more control over which
inputs exist and where they are fetched from.

1 files changed, 15 insertions, 104 deletions

diff --git a/flake.nix b/flake.nix
index 8a51e87..23e773f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,115 +1,26 @@
 {
   description = "NixOS server config";
 
-  inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-26.05-small";
-    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixos-unstable-small";
+  inputs = {};
 
-    deploy-rs.url = "github:serokell/deploy-rs";
-
-    home-manager = {
-      url = "github:nix-community/home-manager/release-26.05";
-      inputs = {
-        nixpkgs.follows = "nixpkgs";
-      };
-    };
-
-    library.url = "git+https://git.foss-syndicate.org/vhack.eu/nix-library?ref=prime";
-
-    treefmt-nix = {
-      url = "github:numtide/treefmt-nix";
-      inputs = {
-        nixpkgs.follows = "nixpkgs";
-      };
-    };
-
-    # inputs for following
-    systems = {
-      url = "github:nix-systems/x86_64-linux"; # only evaluate for this system
-    };
-    flake-compat = {
-      url = "github:edolstra/flake-compat";
-      flake = false;
-    };
-    crane = {
-      url = "github:ipetkov/crane";
-      inputs = {};
-    };
-    flake-utils = {
-      url = "github:numtide/flake-utils";
-      inputs = {
-        systems.follows = "systems";
-      };
-    };
-    rust-overlay = {
-      url = "github:oxalica/rust-overlay";
-      inputs = {
-        nixpkgs.follows = "nixpkgs";
-      };
-    };
+  outputs = {self, ...} @ attrs: let
+    sources = import ./unflake.nix;
 
+    inherit (sources) nixpkgs;
+    inherit (sources) nixpkgs-unstable;
+    inherit (sources) library;
+    inherit (sources) treefmt-nix;
+    inherit (sources) deploy-rs;
     # modules
-    agenix = {
-      url = "github:ryantm/agenix";
-      inputs = {
-        nixpkgs.follows = "nixpkgs";
-      };
-    };
-    turtle = {
-      url = "git+https://git.foss-syndicate.org/bpeetz/forks/atuin?ref=main";
-      inputs = {
-        crane.follows = "crane";
-        nixpkgs.follows = "nixpkgs";
-      };
-    };
-    disko = {
-      url = "github:nix-community/disko";
-      inputs = {
-        nixpkgs.follows = "nixpkgs";
-      };
-    };
-    impermanence = {
-      url = "github:nix-community/impermanence";
-      inputs = {
-        nixpkgs.follows = "nixpkgs";
-        home-manager.follows = "home-manager";
-      };
-    };
-    rocie = {
-      url = "git+https://git.foss-syndicate.org/bpeetz/rocie/nix?ref=prime";
-      inputs = {
-        nixpkgs.follows = "nixpkgs";
-        treefmt-nix.follows = "treefmt-nix";
-        crane.follows = "crane";
-        rust-overlay.follows = "rust-overlay";
-      };
-    };
-    simple-nixos-mailserver = {
-      url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-26.05";
-      inputs = {
-        flake-compat.follows = "flake-compat";
-        nixpkgs.follows = "nixpkgs-unstable";
-      };
-    };
-  };
+    inherit (sources) agenix;
+    inherit (sources) turtle;
+    inherit (sources) disko;
+    inherit (sources) impermanence;
+    inherit (sources) simple-nixos-mailserver;
+    inherit (sources) rocie;
 
-  outputs = {
-    self,
-    nixpkgs,
-    nixpkgs-unstable,
-    library,
-    treefmt-nix,
-    deploy-rs,
-    # modules
-    agenix,
-    turtle,
-    disko,
-    impermanence,
-    simple-nixos-mailserver,
-    rocie,
-    ...
-  } @ attrs: let
     system = "x86_64-linux";
+
     nixos-lib = import (nixpkgs + "/nixos/lib") {};
     pkgs = nixpkgs.legacyPackages.${system};
     pkgsUnstable = nixpkgs-unstable.legacyPackages.${system};