fider: init at 0.24.0 (#353346)

nixos/modules/services/web-apps/fider.nix

@@ -0,0 +1,124 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.services.fider;
+  fiderCmd = lib.getExe cfg.package;
+in
+{
+  options = {
+
+    services.fider = {
+      enable = lib.mkEnableOption "the Fider server";
+      package = lib.mkPackageOption pkgs "fider" { };
+
+      dataDir = lib.mkOption {
+        type = lib.types.str;
+        default = "/var/lib/fider";
+        description = "Default data folder for Fider.";
+        example = "/mnt/fider";
+      };
+
+      database = {
+        url = lib.mkOption {
+          type = lib.types.str;
+          default = "local";
+          description = ''
+            URI to use for the main PostgreSQL database. If this needs to include
+            credentials that shouldn't be world-readable in the Nix store, set an
+            environment file on the systemd service and override the
+            `DATABASE_URL` entry. Pass the string
+            `local` to setup a database on the local server.
+          '';
+        };
+      };
+
+      environment = lib.mkOption {
+        type = lib.types.attrsOf lib.types.str;
+        default = { };
+        example = {
+          PORT = "31213";
+          BASE_URL = "https://fider.example.com";
+          EMAIL = "smtp";
+          EMAIL_NOREPLY = "fider@example.com";
+          EMAIL_SMTP_USERNAME = "fider@example.com";
+          EMAIL_SMTP_HOST = "mail.example.com";
+          EMAIL_SMTP_PORT = "587";
+          BLOB_STORAGE = "fs";
+        };
+        description = ''
+          Environment variables to set for the service. Secrets should be
+          specified using {option}`environmentFiles`.
+          Refer to <https://github.com/getfider/fider/blob/stable/.example.env>
+          and <https://github.com/getfider/fider/blob/stable/app/pkg/env/env.go>
+          for available options.
+        '';
+      };
+
+      environmentFiles = lib.mkOption {
+        type = lib.types.listOf lib.types.path;
+        default = [ ];
+        example = "/run/secrets/fider.env";
+        description = ''
+          Files to load environment variables from. Loaded variables override
+          values set in {option}`environment`.
+        '';
+      };
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.postgresql = lib.mkIf (cfg.database.url == "local") {
+      enable = true;
+      ensureUsers = [
+        {
+          name = "fider";
+          ensureDBOwnership = true;
+        }
+      ];
+      ensureDatabases = [ "fider" ];
+    };
+
+    systemd.services.fider = {
+      description = "Fider server";
+      wantedBy = [ "multi-user.target" ];
+      after = [
+        "network.target"
+      ] ++ lib.optionals (cfg.database.url == "local") [ "postgresql.service" ];
+      requires = lib.optionals (cfg.database.url == "local") [ "postgresql.service" ];
+      environment =
+        let
+          localPostgresqlUrl = "postgres:///fider?host=/run/postgresql";
+        in
+        {
+          DATABASE_URL = if (cfg.database.url == "local") then localPostgresqlUrl else cfg.database.url;
+          BLOB_STORAGE_FS_PATH = "${cfg.dataDir}";
+        }
+        // cfg.environment;
+      serviceConfig = {
+        ExecStartPre = "${fiderCmd} migrate";
+        ExecStart = fiderCmd;
+        StateDirectory = "fider";
+        DynamicUser = true;
+        PrivateTmp = "yes";
+        Restart = "on-failure";
+        RuntimeDirectory = "fider";
+        RuntimeDirectoryPreserve = true;
+        CacheDirectory = "fider";
+        WorkingDirectory = "${cfg.package}";
+        EnvironmentFile = cfg.environmentFiles;
+      };
+    };
+  };
+
+  meta = {
+    maintainers = with lib.maintainers; [
+      drupol
+      niklaskorz
+    ];
+    # doc = ./fider.md;
+  };
+}