Started to move to flakes

flake.nix

@@ -0,0 +1,29 @@
+{
+  description = "A very basic flake";
+
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-21.05";
+    home-manager.url = "github:nix-community/home-manager/release-21.05";
+    home-manager.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = { nixpkgs, home-manager, ... }:
+    with nixpkgs.lib;
+    let
+      is-nix-file = filename: type: (builtins.match ".+.nix$" filename) != null;
+      is-regular-file = filename: type: type == "regular" || type == "link";
+      hostname-from-file = filename:
+        builtins.replaceStrings [ ".nix" ] [ "" ] filename;
+      hosts = map hostname-from-file (attrNames (filterAttrs is-nix-file
+        (filterAttrs is-regular-file (builtins.readDir ./config/hosts))));
+
+      pkgs = import nixpkgs { config = { allowUnfree = true; }; };
+      lib = nixpkgs.lib;
+
+    in {
+      nixConfigurations = mapAttrs (host: hostOpts:
+        lib.nixosSystem {
+
+        }) host-configs;
+    };
+}