Added nix files

.gitignore

@@ -2,4 +2,5 @@ dist
 *.egg-info
 __pycache__
 .venv
-*.wav
+*.wav
+result

default.nix

@@ -0,0 +1,62 @@
+{ lib, python311Packages }:
+with python311Packages;
+let
+  # Stripped down version of the tts package (original is broken and needs cuda)
+  tts =
+    let
+      pname = "TTS";
+      version = "0.22.0";
+    in
+    buildPythonPackage {
+      inherit pname version;
+      src = pkgs.fetchPypi {
+        inherit pname version;
+        sha256 = "sha256-uREZ2n/yrns9rnMo7fmvTbO0jEDrTOFdEe2PXum9cIY=";
+      };
+      doCheck = false;
+
+      dependencies = [
+        cython
+        numpy
+        torch
+        torchaudio
+        coqpit
+        trainer
+        pysbd
+        pandas
+        matplotlib
+        anyascii
+        inflect
+        bangla
+        bnnumerizer
+        bnunicodenormalizer
+        gruut
+        jamo
+        jieba
+        pypinyin
+      ];
+    };
+in
+buildPythonApplication {
+  pname = "mensa-tts";
+  version = "1.0";
+  pyproject = true;
+  src = ./.;
+
+  build-system = [
+    setuptools
+    setuptools-scm
+  ];
+
+  dependencies = [
+    requests
+    tts
+    librosa
+  ];
+
+  meta = with lib; {
+    description = "Satnogs Demo Display";
+    homepage = "https://forgejo.zenerdio.de/sebastian/satnogs-demo-display";
+    platforms = platforms.unix;
+  };
+}

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1734323986,
+        "narHash": "sha256-m/lh6hYMIWDYHCAsn81CDAiXoT3gmxXI9J987W5tZrE=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "394571358ce82dff7411395829aa6a3aad45b907",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-24.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,44 @@
+{
+  description = "A flake for the mensa-tts system.";
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
+  };
+
+
+  outputs = inputs@{ self, nixpkgs, ... }:
+    let
+      lib = nixpkgs.lib;
+
+      allSystems = [ "x86_64-linux" "aarch64-linux" "armv6l-linux" ];
+
+      crossPkgs-aarch64-linux = import nixpkgs { localSystem = "x86_64-linux"; crossSystem = "aarch64-linux"; };
+      crossPkgs-armv6l-linux = import nixpkgs {
+        localSystem = "x86_64-linux";
+        crossSystem = {
+          system = "armv6l-linux";
+          gcc = {
+            arch = "armv6k";
+            fpu = "vfp";
+          };
+        };
+      };
+    in
+    {
+      formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixpkgs-fmt;
+
+      packages = {
+        x86_64-linux = {
+          default = nixpkgs.legacyPackages.x86_64-linux.callPackage ./default.nix { };
+          cross-aarch64-linux = crossPkgs-aarch64-linux.callPackage ./default.nix { };
+          cross-armv6l-linux = crossPkgs-armv6l-linux.callPackage ./default.nix { };
+        };
+        aarch64-linux.default = nixpkgs.legacyPackages.aarch64-linux.callPackage ./default.nix { };
+        armv6l-linux.default = nixpkgs.legacyPackages.armv6l-linux.callPackage ./default.nix { };
+      };
+
+      nixosModules.default = { config, pkgs, ... }: {
+        imports = [ ./module.nix ];
+        _module.args.mensa-tts-pkgs = self.packages;
+      };
+    };
+}

module.nix

@@ -0,0 +1,117 @@
+{ lib, config, pkgs, mesa-tts-pkgs, ... }:
+with lib;
+let
+  # Shorter name to access final settings a 
+  # user of hello.nix module HAS ACTUALLY SET.
+  # cfg is a typical convention.
+  cfg = config.services.mesa-tts;
+in
+{
+
+  options.services.mesa-tts = {
+    enable = mkEnableOption "mensa-tts service";
+
+    package = mkOption {
+      default = mesa-tts-pkgs.x86_64-linux.default;
+      type = types.package;
+      description = "mensa-tts packages to use. Needed to fix crosscompilation issues.";
+    };
+
+    user = mkOption {
+      type = types.str;
+      default = "mensa-tts";
+      description = mdDoc "User to run the mensa-tts script.";
+    };
+
+    group = mkOption {
+      type = types.str;
+      default = "mensa-tts";
+      description = mdDoc "Group for the mensa-tts user.";
+    };
+
+    time = mkOption {
+      type = types.str;
+      default = "Mon..Fri 11:10:00 Europe/Berlin";
+      description = mdDoc "Time to trigger the mensa-tts service. Uses systemd OnCalendar format.";
+    };
+
+    local-address = mkOption {
+      type = types.str;
+      default = "127.0.0.1";
+      description = mdDoc "Local address to send the UDP frames from";
+    };
+
+    local-port = mkOption {
+      type = types.str;
+      default = "4810";
+      description = mdDoc "Local port to send the UDP frames from";
+    };
+
+    remote-address = mkOption {
+      type = types.str;
+      default = "127.0.0.1";
+      description = mdDoc "Remote address to send the UDP frames to";
+    };
+
+    remote-port = mkOption {
+      type = types.str;
+      default = "3810";
+      description = mdDoc "Remote port to send the UDP frames to";
+    };
+
+    cache-dir = mkOption {
+      type = types.str;
+      default = "/var/cache/mensa-tts";
+      description = mdDoc "Directory to store temporary data";
+    };
+
+  };
+
+  config = mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [
+      cfg.package
+    ];
+
+    users.users = mkIf (cfg.user == "mensa-tts") {
+      mensa-tts = {
+        group = cfg.group;
+        isNormalUser = true;
+      };
+    };
+
+    users.groups = mkIf (cfg.group == "mensa-tts") {
+      mensa-tts = { };
+    };
+
+    systemd.tmpfiles.rules = [
+      "d '${cfg.cache-dir}' 0750 ${cfg.user} ${cfg.group} - -"
+    ];
+
+    systemd.services.mesa-tts = {
+      description = "mesa-tts service";
+      serviceConfig = {
+        Type = "oneshot";
+        User = cfg.user;
+        Group = cfg.group;
+        WorkingDirectory = cfg.cache-dir;
+      };
+      script = ''
+        ${cfg.package}/bin/mena-tts
+        ${cfg.package}/bin/fm_feed_wav --local-addr ${cfg.local-address} \
+          --local-port ${cfg.local-port} \
+          --local-addr ${cfg.local-address} \
+          --local-port ${cfg.local-port} \
+          --wav mensa.wav
+      '';
+    };
+
+
+    systemd.timers.mesa-tts = {
+      wantedBy = [ "timers.target" ];
+      timerConfig = {
+        OnCalendar = cfg.time;
+        Unit = "mesa-tts.service";
+      };
+    };
+  };
+}