384 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			384 lines
		
	
	
		
			13 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, lib, pkgs, ... }:
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let
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  inherit (lib) mkBefore mkDefault mkEnableOption mkIf mkOption mkRemovedOptionModule types;
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  inherit (lib) concatStringsSep literalExample mapAttrsToList;
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  inherit (lib) optional optionalAttrs optionalString;
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  cfg = config.services.redmine;
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  format = pkgs.formats.yaml {};
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  bundle = "${cfg.package}/share/redmine/bin/bundle";
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  databaseYml = pkgs.writeText "database.yml" ''
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    production:
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      adapter: ${cfg.database.type}
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      database: ${cfg.database.name}
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      host: ${if (cfg.database.type == "postgresql" && cfg.database.socket != null) then cfg.database.socket else cfg.database.host}
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      port: ${toString cfg.database.port}
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      username: ${cfg.database.user}
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      password: #dbpass#
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      ${optionalString (cfg.database.type == "mysql2" && cfg.database.socket != null) "socket: ${cfg.database.socket}"}
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  '';
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  configurationYml = format.generate "configuration.yml" cfg.settings;
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  additionalEnvironment = pkgs.writeText "additional_environment.rb" cfg.extraEnv;
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  unpackTheme = unpack "theme";
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  unpackPlugin = unpack "plugin";
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  unpack = id: (name: source:
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    pkgs.stdenv.mkDerivation {
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      name = "redmine-${id}-${name}";
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      nativeBuildInputs = [ pkgs.unzip ];
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      buildCommand = ''
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        mkdir -p $out
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        cd $out
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        unpackFile ${source}
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      '';
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  });
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  mysqlLocal = cfg.database.createLocally && cfg.database.type == "mysql2";
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  pgsqlLocal = cfg.database.createLocally && cfg.database.type == "postgresql";
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in
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{
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  imports = [
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    (mkRemovedOptionModule [ "services" "redmine" "extraConfig" ] "Use services.redmine.settings instead.")
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    (mkRemovedOptionModule [ "services" "redmine" "database" "password" ] "Use services.redmine.database.passwordFile instead.")
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  ];
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  # interface
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  options = {
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    services.redmine = {
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      enable = mkEnableOption "Redmine";
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      package = mkOption {
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        type = types.package;
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        default = pkgs.redmine;
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        description = "Which Redmine package to use.";
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        example = "pkgs.redmine.override { ruby = pkgs.ruby_2_7; }";
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      };
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      user = mkOption {
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        type = types.str;
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        default = "redmine";
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        description = "User under which Redmine is ran.";
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      };
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      group = mkOption {
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        type = types.str;
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        default = "redmine";
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        description = "Group under which Redmine is ran.";
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      };
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      port = mkOption {
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        type = types.int;
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        default = 3000;
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        description = "Port on which Redmine is ran.";
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      };
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      stateDir = mkOption {
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        type = types.str;
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        default = "/var/lib/redmine";
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        description = "The state directory, logs and plugins are stored here.";
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      };
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      settings = mkOption {
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        type = format.type;
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        default = {};
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        description = ''
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          Redmine configuration (<filename>configuration.yml</filename>). Refer to
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          <link xlink:href="https://guides.rubyonrails.org/action_mailer_basics.html#action-mailer-configuration"/>
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          for details.
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        '';
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        example = literalExample ''
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          {
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            email_delivery = {
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              delivery_method = "smtp";
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              smtp_settings = {
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                address = "mail.example.com";
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                port = 25;
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              };
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            };
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          }
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        '';
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      };
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      extraEnv = mkOption {
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        type = types.lines;
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        default = "";
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        description = ''
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          Extra configuration in additional_environment.rb.
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          See <link xlink:href="https://svn.redmine.org/redmine/trunk/config/additional_environment.rb.example"/>
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          for details.
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        '';
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        example = literalExample ''
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          config.logger.level = Logger::DEBUG
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        '';
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      };
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      themes = mkOption {
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        type = types.attrsOf types.path;
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        default = {};
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        description = "Set of themes.";
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        example = literalExample ''
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          {
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            dkuk-redmine_alex_skin = builtins.fetchurl {
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              url = "https://bitbucket.org/dkuk/redmine_alex_skin/get/1842ef675ef3.zip";
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              sha256 = "0hrin9lzyi50k4w2bd2b30vrf1i4fi1c0gyas5801wn8i7kpm9yl";
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            };
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          }
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        '';
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      };
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      plugins = mkOption {
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        type = types.attrsOf types.path;
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        default = {};
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        description = "Set of plugins.";
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        example = literalExample ''
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          {
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            redmine_env_auth = builtins.fetchurl {
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              url = "https://github.com/Intera/redmine_env_auth/archive/0.6.zip";
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              sha256 = "0yyr1yjd8gvvh832wdc8m3xfnhhxzk2pk3gm2psg5w9jdvd6skak";
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            };
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          }
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        '';
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      };
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      database = {
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        type = mkOption {
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          type = types.enum [ "mysql2" "postgresql" ];
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          example = "postgresql";
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          default = "mysql2";
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          description = "Database engine to use.";
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        };
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        host = mkOption {
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          type = types.str;
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          default = "localhost";
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          description = "Database host address.";
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        };
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        port = mkOption {
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          type = types.int;
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          default = if cfg.database.type == "postgresql" then 5432 else 3306;
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          defaultText = "3306";
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          description = "Database host port.";
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        };
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        name = mkOption {
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          type = types.str;
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          default = "redmine";
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          description = "Database name.";
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        };
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        user = mkOption {
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          type = types.str;
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          default = "redmine";
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          description = "Database user.";
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        };
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        passwordFile = mkOption {
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          type = types.nullOr types.path;
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          default = null;
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          example = "/run/keys/redmine-dbpassword";
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          description = ''
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            A file containing the password corresponding to
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            <option>database.user</option>.
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          '';
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        };
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        socket = mkOption {
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          type = types.nullOr types.path;
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          default =
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            if mysqlLocal then "/run/mysqld/mysqld.sock"
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            else if pgsqlLocal then "/run/postgresql"
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            else null;
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          defaultText = "/run/mysqld/mysqld.sock";
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          example = "/run/mysqld/mysqld.sock";
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          description = "Path to the unix socket file to use for authentication.";
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        };
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        createLocally = mkOption {
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          type = types.bool;
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          default = true;
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          description = "Create the database and database user locally.";
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        };
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      };
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    };
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  };
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  # implementation
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  config = mkIf cfg.enable {
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    assertions = [
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      { assertion = cfg.database.passwordFile != null || cfg.database.socket != null;
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        message = "one of services.redmine.database.socket or services.redmine.database.passwordFile must be set";
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      }
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      { assertion = cfg.database.createLocally -> cfg.database.user == cfg.user;
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        message = "services.redmine.database.user must be set to ${cfg.user} if services.redmine.database.createLocally is set true";
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      }
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      { assertion = cfg.database.createLocally -> cfg.database.socket != null;
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        message = "services.redmine.database.socket must be set if services.redmine.database.createLocally is set to true";
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      }
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      { assertion = cfg.database.createLocally -> cfg.database.host == "localhost";
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        message = "services.redmine.database.host must be set to localhost if services.redmine.database.createLocally is set to true";
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      }
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    ];
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    services.redmine.settings = {
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      production = {
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        scm_subversion_command = "${pkgs.subversion}/bin/svn";
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        scm_mercurial_command = "${pkgs.mercurial}/bin/hg";
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        scm_git_command = "${pkgs.git}/bin/git";
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        scm_cvs_command = "${pkgs.cvs}/bin/cvs";
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        scm_bazaar_command = "${pkgs.breezy}/bin/bzr";
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        scm_darcs_command = "${pkgs.darcs}/bin/darcs";
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      };
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    };
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    services.redmine.extraEnv = mkBefore ''
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      config.logger = Logger.new("${cfg.stateDir}/log/production.log", 14, 1048576)
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      config.logger.level = Logger::INFO
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    '';
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    services.mysql = mkIf mysqlLocal {
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      enable = true;
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      package = mkDefault pkgs.mariadb;
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      ensureDatabases = [ cfg.database.name ];
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      ensureUsers = [
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        { name = cfg.database.user;
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          ensurePermissions = { "${cfg.database.name}.*" = "ALL PRIVILEGES"; };
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        }
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      ];
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    };
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    services.postgresql = mkIf pgsqlLocal {
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      enable = true;
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      ensureDatabases = [ cfg.database.name ];
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      ensureUsers = [
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        { name = cfg.database.user;
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          ensurePermissions = { "DATABASE ${cfg.database.name}" = "ALL PRIVILEGES"; };
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        }
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      ];
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    };
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    # create symlinks for the basic directory layout the redmine package expects
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    systemd.tmpfiles.rules = [
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      "d '${cfg.stateDir}' 0750 ${cfg.user} ${cfg.group} - -"
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      "d '${cfg.stateDir}/cache' 0750 ${cfg.user} ${cfg.group} - -"
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      "d '${cfg.stateDir}/config' 0750 ${cfg.user} ${cfg.group} - -"
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      "d '${cfg.stateDir}/files' 0750 ${cfg.user} ${cfg.group} - -"
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      "d '${cfg.stateDir}/log' 0750 ${cfg.user} ${cfg.group} - -"
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      "d '${cfg.stateDir}/plugins' 0750 ${cfg.user} ${cfg.group} - -"
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      "d '${cfg.stateDir}/public' 0750 ${cfg.user} ${cfg.group} - -"
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      "d '${cfg.stateDir}/public/plugin_assets' 0750 ${cfg.user} ${cfg.group} - -"
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      "d '${cfg.stateDir}/public/themes' 0750 ${cfg.user} ${cfg.group} - -"
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      "d '${cfg.stateDir}/tmp' 0750 ${cfg.user} ${cfg.group} - -"
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      "d /run/redmine - - - - -"
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      "d /run/redmine/public - - - - -"
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      "L+ /run/redmine/config - - - - ${cfg.stateDir}/config"
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      "L+ /run/redmine/files - - - - ${cfg.stateDir}/files"
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      "L+ /run/redmine/log - - - - ${cfg.stateDir}/log"
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      "L+ /run/redmine/plugins - - - - ${cfg.stateDir}/plugins"
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      "L+ /run/redmine/public/plugin_assets - - - - ${cfg.stateDir}/public/plugin_assets"
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      "L+ /run/redmine/public/themes - - - - ${cfg.stateDir}/public/themes"
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      "L+ /run/redmine/tmp - - - - ${cfg.stateDir}/tmp"
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    ];
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    systemd.services.redmine = {
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      after = [ "network.target" ] ++ optional mysqlLocal "mysql.service" ++ optional pgsqlLocal "postgresql.service";
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      wantedBy = [ "multi-user.target" ];
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      environment.RAILS_ENV = "production";
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      environment.RAILS_CACHE = "${cfg.stateDir}/cache";
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      environment.REDMINE_LANG = "en";
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      environment.SCHEMA = "${cfg.stateDir}/cache/schema.db";
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      path = with pkgs; [
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        imagemagick
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        breezy
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        cvs
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        darcs
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        git
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        mercurial
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        subversion
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      ];
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      preStart = ''
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        rm -rf "${cfg.stateDir}/plugins/"*
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        rm -rf "${cfg.stateDir}/public/themes/"*
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        # start with a fresh config directory
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        # the config directory is copied instead of linked as some mutable data is stored in there
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        find "${cfg.stateDir}/config" ! -name "secret_token.rb" -type f -exec rm -f {} +
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        cp -r ${cfg.package}/share/redmine/config.dist/* "${cfg.stateDir}/config/"
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        chmod -R u+w "${cfg.stateDir}/config"
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        # link in the application configuration
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        ln -fs ${configurationYml} "${cfg.stateDir}/config/configuration.yml"
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        # link in the additional environment configuration
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        ln -fs ${additionalEnvironment} "${cfg.stateDir}/config/additional_environment.rb"
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        # link in all user specified themes
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        for theme in ${concatStringsSep " " (mapAttrsToList unpackTheme cfg.themes)}; do
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          ln -fs $theme/* "${cfg.stateDir}/public/themes"
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        done
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        # link in redmine provided themes
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        ln -sf ${cfg.package}/share/redmine/public/themes.dist/* "${cfg.stateDir}/public/themes/"
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        # link in all user specified plugins
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        for plugin in ${concatStringsSep " " (mapAttrsToList unpackPlugin cfg.plugins)}; do
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          ln -fs $plugin/* "${cfg.stateDir}/plugins/''${plugin##*-redmine-plugin-}"
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        done
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        # handle database.passwordFile & permissions
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        DBPASS=${optionalString (cfg.database.passwordFile != null) "$(head -n1 ${cfg.database.passwordFile})"}
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        cp -f ${databaseYml} "${cfg.stateDir}/config/database.yml"
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        sed -e "s,#dbpass#,$DBPASS,g" -i "${cfg.stateDir}/config/database.yml"
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        chmod 440 "${cfg.stateDir}/config/database.yml"
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        # generate a secret token if required
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        if ! test -e "${cfg.stateDir}/config/initializers/secret_token.rb"; then
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          ${bundle} exec rake generate_secret_token
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          chmod 440 "${cfg.stateDir}/config/initializers/secret_token.rb"
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        fi
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        # execute redmine required commands prior to starting the application
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        ${bundle} exec rake db:migrate
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        ${bundle} exec rake redmine:plugins:migrate
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        ${bundle} exec rake redmine:load_default_data
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      '';
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      serviceConfig = {
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        Type = "simple";
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        User = cfg.user;
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        Group = cfg.group;
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        TimeoutSec = "300";
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        WorkingDirectory = "${cfg.package}/share/redmine";
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        ExecStart="${bundle} exec rails server webrick -e production -p ${toString cfg.port} -P '${cfg.stateDir}/redmine.pid'";
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      };
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    };
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    users.users = optionalAttrs (cfg.user == "redmine") {
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      redmine = {
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        group = cfg.group;
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        home = cfg.stateDir;
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        uid = config.ids.uids.redmine;
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      };
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    };
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    users.groups = optionalAttrs (cfg.group == "redmine") {
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      redmine.gid = config.ids.gids.redmine;
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    };
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  };
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}
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