Initial template

flake.nix

@@ -0,0 +1,67 @@
+{
+  description = "A very basic flake";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05";
+  inputs.nixos-hw.url = "github:NixOS/nixos-hardware";
+  inputs.agenix.url = "github:ryantm/agenix";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+
+  outputs = {
+    self,
+    nixpkgs,
+    nixos-hw,
+    flake-utils,
+    agenix,
+  }: let
+    buildEnv = {
+      nixpkgs.hostPlatform = "aarch64-linux";
+
+      nixpkgs.overlays = [
+        (final: super: {
+          makeModulesClosure = x:
+            super.makeModulesClosure (x // {allowMissing = true;});
+        })
+      ];
+    };
+  in
+    {
+      nixosConfigurations.rpi4-install = nixpkgs.lib.nixosSystem {
+        modules = [
+          "${nixpkgs}/nixos/modules/installer/sd-card/sd-image-aarch64-installer.nix"
+          nixos-hw.nixosModules.raspberry-pi-4
+          buildEnv
+          {
+            networking.hostName = "rpi4-nixos";
+
+            services.openssh.enable = true;
+            users.users.root.openssh.authorizedKeys.keys = [
+              # My SSH Key
+            ];
+
+            networking.wireless = {
+              enable = true;
+              # Don't commit the password!
+              networks."<MY NETWORK>".psk = "<PASSWORD>";
+            };
+
+            system.stateVersion = "23.11";
+          }
+        ];
+      };
+      nixosConfigurations.rpi4 = nixpkgs.lib.nixosSystem {
+        modules = [
+          nixos-hw.nixosModules.raspberry-pi-4
+          agenix.nixosModules.default
+          buildEnv
+          ./config.nix
+        ];
+      };
+      images.rpi4-install = self.nixosConfigurations.rpi4-install.config.system.build.sdImage;
+    }
+    // (flake-utils.lib.eachDefaultSystem (system: {
+      devShell = nixpkgs.legacyPackages."${system}".mkShell {
+        nativeBuildInputs = [agenix.packages."${system}".agenix];
+      };
+      packages.agenix = agenix.packages.${system}.agenix;
+    }));
+}