[NixOS] Add bootstrap flake

nixos/bootstrap/flake.nix

@@ -0,0 +1,154 @@
+{
+  inputs = {
+    nixos-hardware = { url = github:NixOS/nixos-hardware; };
+
+    nixpkgs = { url = github:NixOS/nipxkgs/nixos-unstable; };
+
+    home-manager = {
+      url = github:nix-community/home-manager;
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    xmonad-contrib = {
+      url = github:IvanMalison/xmonad-contrib/withMyChanges;
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+        git-ignore-nix.follows = "git-ignore-nix";
+        xmonad.follows = "xmonad";
+      };
+    };
+
+    xmonad = {
+      url = github:IvanMalison/xmonad/master;
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+        git-ignore-nix.follows = "git-ignore-nix";
+      };
+    };
+
+    taffybar = {
+      url = github:taffybar/taffybar/master;
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+        git-ignore-nix.follows = "git-ignore-nix";
+        xmonad.follows = "xmonad";
+        gtk-sni-tray.follows = "gtk-sni-tray";
+        gtk-strut.follows = "gtk-strut";
+      };
+    };
+
+    imalison-taffybar = {
+      url = path:../dotfiles/config/taffybar;
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+        xmonad.follows = "xmonad";
+        taffybar.follows = "taffybar";
+      };
+    };
+
+    notifications-tray-icon = {
+      url = github:IvanMalison/notifications-tray-icon;
+      inputs.flake-utils.follows = "flake-utils";
+      inputs.git-ignore-nix.follows = "git-ignore-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    nix = {
+      url = github:IvanMalison/nix;
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    flake-utils = {
+      url = github:numtide/flake-utils;
+      inputs.systems.follows = "systems";
+    };
+
+    systems = { url = github:nix-systems/default; };
+
+    git-ignore-nix = {
+      url = github:hercules-ci/gitignore.nix;
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    gtk-sni-tray = {
+      url = github:taffybar/gtk-sni-tray;
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+        git-ignore-nix.follows = "git-ignore-nix";
+        status-notifier-item.follows = "status-notifier-item";
+      };
+    };
+
+    status-notifier-item = {
+      url = github:taffybar/status-notifier-item;
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+        git-ignore-nix.follows = "git-ignore-nix";
+      };
+    };
+
+    gtk-strut = {
+      url = github:taffybar/gtk-strut;
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+        git-ignore-nix.follows = "git-ignore-nix";
+      };
+    };
+
+    nixpkgs-regression = { url = github:NixOS/nixpkgs; };
+  };
+
+  outputs = inputs@{
+    self, nixpkgs, nixos-hardware, home-manager, taffybar, xmonad,
+    xmonad-contrib, notifications-tray-icon, nix, imalison-taffybar, ...
+  }:
+  let
+    mkConfig =
+      args@
+      { system ? "x86_64-linux"
+      , baseModules ? []
+      , modules ? []
+      , specialArgs ? {}
+      , ...
+      }:
+      nixpkgs.lib.nixosSystem (args // {
+        inherit system;
+        modules = baseModules ++ modules;
+        specialArgs = { inherit inputs; } // specialArgs;
+      });
+      machineFilenames = builtins.attrNames (builtins.readDir ../machines);
+      machineNameFromFilename = filename: builtins.head (builtins.split "\\." filename);
+      mkConfigurationParams = filename: {
+        name = machineNameFromFilename filename;
+        value = {
+          modules = [ (./machines + ("/" + filename)) ];
+        };
+      };
+      defaultConfigurationParams =
+        builtins.listToAttrs (map mkConfigurationParams machineFilenames);
+        customParams = {
+          biskcomp = {
+            system = "aarch64-linux";
+          };
+          air-gapped-pi = {
+            system = "aarch64-linux";
+          };
+        };
+  in
+  {
+    nixosConfigurations = builtins.mapAttrs (machineName: params:
+    let machineParams =
+      if builtins.hasAttr machineName customParams
+      then (builtins.getAttr machineName customParams)
+      else {};
+    in mkConfig (params // machineParams)
+    ) defaultConfigurationParams;
+  };
+}