uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

nixos/modules/services/misc/airsonic.nix

@@ -0,0 +1,179 @@
+{ config, lib, options, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.airsonic;
+  opt = options.services.airsonic;
+in {
+  options = {
+
+    services.airsonic = {
+      enable = mkEnableOption "Airsonic, the Free and Open Source media streaming server (fork of Subsonic and Libresonic)";
+
+      user = mkOption {
+        type = types.str;
+        default = "airsonic";
+        description = "User account under which airsonic runs.";
+      };
+
+      home = mkOption {
+        type = types.path;
+        default = "/var/lib/airsonic";
+        description = ''
+          The directory where Airsonic will create files.
+          Make sure it is writable.
+        '';
+      };
+
+      virtualHost = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = ''
+          Name of the nginx virtualhost to use and setup. If null, do not setup any virtualhost.
+        '';
+      };
+
+      listenAddress = mkOption {
+        type = types.str;
+        default = "127.0.0.1";
+        description = ''
+          The host name or IP address on which to bind Airsonic.
+          The default value is appropriate for first launch, when the
+          default credentials are easy to guess. It is also appropriate
+          if you intend to use the virtualhost option in the service
+          module. In other cases, you may want to change this to a
+          specific IP or 0.0.0.0 to listen on all interfaces.
+        '';
+      };
+
+      port = mkOption {
+        type = types.int;
+        default = 4040;
+        description = ''
+          The port on which Airsonic will listen for
+          incoming HTTP traffic. Set to 0 to disable.
+        '';
+      };
+
+      contextPath = mkOption {
+        type = types.path;
+        default = "/";
+        description = ''
+          The context path, i.e., the last part of the Airsonic
+          URL. Typically '/' or '/airsonic'. Default '/'
+        '';
+      };
+
+      maxMemory = mkOption {
+        type = types.int;
+        default = 100;
+        description = ''
+          The memory limit (max Java heap size) in megabytes.
+          Default: 100
+        '';
+      };
+
+      transcoders = mkOption {
+        type = types.listOf types.path;
+        default = [ "${pkgs.ffmpeg.bin}/bin/ffmpeg" ];
+        defaultText = literalExpression ''[ "''${pkgs.ffmpeg.bin}/bin/ffmpeg" ]'';
+        description = ''
+          List of paths to transcoder executables that should be accessible
+          from Airsonic. Symlinks will be created to each executable inside
+          ''${config.${opt.home}}/transcoders.
+        '';
+      };
+
+      jre = mkOption {
+        type = types.package;
+        default = pkgs.jre8;
+        defaultText = literalExpression "pkgs.jre8";
+        description = ''
+          JRE package to use.
+
+          Airsonic only supports Java 8, airsonic-advanced requires at least
+          Java 11.
+        '';
+      };
+
+      war = mkOption {
+        type = types.path;
+        default = "${pkgs.airsonic}/webapps/airsonic.war";
+        defaultText = literalExpression ''"''${pkgs.airsonic}/webapps/airsonic.war"'';
+        description = "Airsonic war file to use.";
+      };
+
+      jvmOptions = mkOption {
+        description = ''
+          Extra command line options for the JVM running AirSonic.
+          Useful for sending jukebox output to non-default alsa
+          devices.
+        '';
+        default = [
+        ];
+        type = types.listOf types.str;
+        example = [
+          "-Djavax.sound.sampled.Clip='#CODEC [plughw:1,0]'"
+          "-Djavax.sound.sampled.Port='#Port CODEC [hw:1]'"
+          "-Djavax.sound.sampled.SourceDataLine='#CODEC [plughw:1,0]'"
+          "-Djavax.sound.sampled.TargetDataLine='#CODEC [plughw:1,0]'"
+        ];
+      };
+
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.services.airsonic = {
+      description = "Airsonic Media Server";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+
+      preStart = ''
+        # Install transcoders.
+        rm -rf ${cfg.home}/transcode
+        mkdir -p ${cfg.home}/transcode
+        for exe in ${toString cfg.transcoders}; do
+          ln -sf "$exe" ${cfg.home}/transcode
+        done
+      '';
+      serviceConfig = {
+        ExecStart = ''
+          ${cfg.jre}/bin/java -Xmx${toString cfg.maxMemory}m \
+          -Dairsonic.home=${cfg.home} \
+          -Dserver.address=${cfg.listenAddress} \
+          -Dserver.port=${toString cfg.port} \
+          -Dairsonic.contextPath=${cfg.contextPath} \
+          -Djava.awt.headless=true \
+          ${optionalString (cfg.virtualHost != null)
+            "-Dserver.use-forward-headers=true"} \
+          ${toString cfg.jvmOptions} \
+          -verbose:gc \
+          -jar ${cfg.war}
+        '';
+        Restart = "always";
+        User = "airsonic";
+        UMask = "0022";
+      };
+    };
+
+    services.nginx = mkIf (cfg.virtualHost != null) {
+      enable = true;
+      recommendedProxySettings = true;
+      virtualHosts.${cfg.virtualHost} = {
+        locations.${cfg.contextPath}.proxyPass = "http://${cfg.listenAddress}:${toString cfg.port}";
+      };
+    };
+
+    users.users.airsonic = {
+      description = "Airsonic service user";
+      group = "airsonic";
+      name = cfg.user;
+      home = cfg.home;
+      createHome = true;
+      isSystemUser = true;
+    };
+    users.groups.airsonic = {};
+  };
+}