matrix-sliding-sync: drop

On the 2024 matrix conference the EOL for the sliding-sync-proxy was
announced to be 2024-10-15. While the repo does not yet reflect that
state, we should not be taking the the sliding-sync proxy into NixOS
24.11 under any circumstances.

nixos/doc/manual/release-notes/rl-2411.section.md

@@ -365,6 +365,8 @@
 - `nodePackages.coc-metals` was removed due to being deprecated upstream.
   `vimPlugins.nvim-metals` is its official replacement.
 
+- `matrix-sliding-sync` was removed because it has been replaced by the simplified sliding sync functionality introduced in matrix-synapse 114.0.
+
 - `teleport` has been upgraded from major version 15 to major version 16.
   Refer to upstream [upgrade instructions](https://goteleport.com/docs/management/operations/upgrading/)
   and [release notes for v16](https://goteleport.com/docs/changelog/#1600-061324).

nixos/modules/module-list.nix

@@ -711,7 +711,6 @@
   ./services/matrix/mjolnir.nix
   ./services/matrix/mx-puppet-discord.nix
   ./services/matrix/pantalaimon.nix
-  ./services/matrix/matrix-sliding-sync.nix
   ./services/matrix/synapse.nix
   ./services/misc/airsonic.nix
   ./services/misc/amazon-ssm-agent.nix

nixos/modules/rename.nix

@@ -87,6 +87,7 @@ in
     (mkRemovedOptionModule [ "services" "mailpile" ] "The corresponding package was removed from nixpkgs.")
     (mkRemovedOptionModule [ "services" "marathon" ] "The corresponding package was removed from nixpkgs.")
     (mkRemovedOptionModule [ "services" "mathics" ] "The Mathics module has been removed")
+    (mkRemovedOptionModule [ "services" "matrix-sliding-sync" ] "The matrix-sliding-sync package has been removed, since matrix-synapse incorporated its functionality")
     (mkRemovedOptionModule [ "services" "meguca" ] "Use meguca has been removed from nixpkgs")
     (mkRemovedOptionModule [ "services" "mesos" ] "The corresponding package was removed from nixpkgs.")
     (mkRemovedOptionModule [ "services" "mxisd" ] "The mxisd module has been removed as both mxisd and ma1sd got removed.")

nixos/modules/services/matrix/matrix-sliding-sync.nix

@@ -1,107 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-let
-  cfg = config.services.matrix-sliding-sync;
-in
-{
-  imports = [
-    (lib.mkRenamedOptionModule [ "services" "matrix-synapse" "sliding-sync" ] [ "services" "matrix-sliding-sync" ])
-  ];
-
-  options.services.matrix-sliding-sync = {
-    enable = lib.mkEnableOption "sliding sync";
-
-    package = lib.mkPackageOption pkgs "matrix-sliding-sync" { };
-
-    settings = lib.mkOption {
-      type = lib.types.submodule {
-        freeformType = with lib.types; attrsOf str;
-        options = {
-          SYNCV3_SERVER = lib.mkOption {
-            type = lib.types.str;
-            description = ''
-              The destination homeserver to talk to not including `/_matrix/` e.g `https://matrix.example.org`.
-            '';
-          };
-
-          SYNCV3_DB = lib.mkOption {
-            type = lib.types.str;
-            default = "postgresql:///matrix-sliding-sync?host=/run/postgresql";
-            description = ''
-              The postgres connection string.
-              Refer to <https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNSTRING>.
-            '';
-          };
-
-          SYNCV3_BINDADDR = lib.mkOption {
-            type = lib.types.str;
-            default = "127.0.0.1:8009";
-            example = "[::]:8008";
-            description = "The interface and port or path (for unix socket) to listen on.";
-          };
-
-          SYNCV3_LOG_LEVEL = lib.mkOption {
-            type = lib.types.enum [ "trace" "debug" "info" "warn" "error" "fatal" ];
-            default = "info";
-            description = "The level of verbosity for messages logged.";
-          };
-        };
-      };
-      default = { };
-      description = ''
-        Freeform environment variables passed to the sliding sync proxy.
-        Refer to <https://github.com/matrix-org/sliding-sync#setup> for all supported values.
-      '';
-    };
-
-    createDatabase = lib.mkOption {
-      type = lib.types.bool;
-      default = true;
-      description = ''
-        Whether to enable and configure `services.postgres` to ensure that the database user `matrix-sliding-sync`
-        and the database `matrix-sliding-sync` exist.
-      '';
-    };
-
-    environmentFile = lib.mkOption {
-      type = lib.types.str;
-      description = ''
-        Environment file as defined in {manpage}`systemd.exec(5)`.
-
-        This must contain the {env}`SYNCV3_SECRET` variable which should
-        be generated with {command}`openssl rand -hex 32`.
-      '';
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
-    services.postgresql = lib.optionalAttrs cfg.createDatabase {
-      enable = true;
-      ensureDatabases = [ "matrix-sliding-sync" ];
-      ensureUsers = [ {
-        name = "matrix-sliding-sync";
-        ensureDBOwnership = true;
-      } ];
-    };
-
-    systemd.services.matrix-sliding-sync = rec {
-      after =
-        lib.optional cfg.createDatabase "postgresql.service"
-        ++ lib.optional config.services.dendrite.enable "dendrite.service"
-        ++ lib.optional config.services.matrix-synapse.enable config.services.matrix-synapse.serviceUnit;
-      wants = after;
-      wantedBy = [ "multi-user.target" ];
-      environment = cfg.settings;
-      serviceConfig = {
-        DynamicUser = true;
-        EnvironmentFile = cfg.environmentFile;
-        ExecStart = lib.getExe cfg.package;
-        StateDirectory = "matrix-sliding-sync";
-        WorkingDirectory = "%S/matrix-sliding-sync";
-        RuntimeDirectory = "matrix-sliding-sync";
-        Restart = "on-failure";
-        RestartSec = "1s";
-      };
-    };
-  };
-}

pkgs/servers/matrix-synapse/sliding-sync/default.nix

@@ -1,37 +0,0 @@
-{ lib
-, buildGoModule
-, fetchFromGitHub
-}:
-
-buildGoModule rec {
-  pname = "matrix-sliding-sync";
-  version = "0.99.19";
-
-  src = fetchFromGitHub {
-    owner = "matrix-org";
-    repo = "sliding-sync";
-    rev = "refs/tags/v${version}";
-    hash = "sha256-w4VL+MioNeJ/R48Ln9tYaqlfg7NvT3mQs0dWOZTHQK4=";
-  };
-
-  vendorHash = "sha256-THjvc0TepIBFOTte7t63Dmadf3HMuZ9m0YzQMI5e5Pw=";
-
-  subPackages = [ "cmd/syncv3" ];
-
-  ldflags = [
-    "-s"
-    "-w"
-    "-X main.GitCommit=${src.rev}"
-  ];
-
-  # requires a running matrix-synapse
-  doCheck = false;
-
-  meta = with lib; {
-    description = "Sliding sync implementation of MSC3575 for matrix";
-    homepage = "https://github.com/matrix-org/sliding-sync";
-    license = with licenses; [ asl20 ];
-    maintainers = with maintainers; [ emilylange yayayayaka ];
-    mainProgram = "syncv3";
-  };
-}

pkgs/top-level/aliases.nix

@@ -1026,6 +1026,7 @@ mapAliases {
   matrique = throw "'matrique' has been renamed to/replaced by 'spectral'"; # Converted to throw 2024-10-17
   matrixcli = throw "'matrixcli' has been removed due to being unmaintained and broken functionality. Recommend 'matrix-commander' as an alternative"; # Added 2024-03-09
   matrix-recorder = throw "matrix-recorder has been removed due to being unmaintained"; # Added 2023-05-21
+  matrix-sliding-sync = throw "matrix-sliding-sync has been removed as matrix-synapse 114.0 and later covers its functionality"; # Added 2024-10-20
   maui-nota = libsForQt5.mauiPackages.nota; # added 2022-05-17
   maui-shell = throw "maui-shell has been removed from nixpkgs, it was broken"; # Added 2024-07-15
   mbox = throw "'mbox' has been removed, as it was broken and unmaintained"; # Added 2023-12-21

pkgs/top-level/all-packages.nix

@@ -9242,8 +9242,6 @@ with pkgs;
 
   matrix-conduit = callPackage ../servers/matrix-conduit { };
 
-  matrix-sliding-sync = callPackage ../servers/matrix-synapse/sliding-sync { };
-
   matrix-synapse = callPackage ../servers/matrix-synapse/wrapper.nix { };
   matrix-synapse-unwrapped = callPackage ../servers/matrix-synapse/default.nix { };
   matrix-synapse-plugins = recurseIntoAttrs matrix-synapse-unwrapped.plugins;