setup nixos environment

flake.nix

@@ -0,0 +1,62 @@
+{
+  description = "boddle, in Anlehnung an bottle";
+
+  outputs = { self, nixpkgs }: let
+    module = { pkgs, lib, config, ... }: {
+      options.services.boddle = {
+        enable = lib.mkEnableOption "enable";
+        # TODO: configurability
+      };
+
+      config.nixpkgs.overlays = [ self.overlay ];
+
+      config.systemd.services.boddle = lib.mkIf config.services.boddle.enable {
+        script = lib.getExe pkgs.boddle;
+      };
+    };
+
+    per-system = fn: builtins.mapAttrs (_: fn) nixpkgs.legacyPackages;
+
+    package = pkgs: pkgs.buildGoModule {
+      meta = {
+        description = "boddle, in Anlehnung an bottle";
+        homepage = "https://git.fbs42.ddnss.de/forgejo/fbs42/boddle";
+        name = "boddle";
+      };
+      pname = "boddle";
+      version = "v0.0.1";
+      vendorHash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
+      src = pkgs.fetchgit {
+        url = "https://git.fbs42.ddnss.de/forgejo/fbs42/boddle";
+        hash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
+      };
+    };
+
+    devshell = pkgs: pkgs.mkShell {
+      nativeBuildInputs = with pkgs.buildPackages; [
+        go
+      ];
+    };
+
+  in {
+    nixosModules = {
+      default = self.nixosModules.boddle;
+      boddle = module;
+    };
+
+    overlay = final: prev: {
+      boddle = package final;
+    };
+
+    packages = per-system (pkgs: {
+      default = package pkgs;
+      boddle = package pkgs;
+    });
+
+    apps = self.packages;
+
+    devShells = per-system (pkgs: {
+      default = devshell pkgs;
+    });
+  };
+}