nixos/ocis: default to the newly renamed ocis-bin5 package

And we are getting ready for ocis-bin7 to land, where we will need to
compare it to the system.stateVersion.

nixos/modules/services/web-apps/ocis.md

@@ -37,7 +37,7 @@ However to make this configuration work you will need generate a configuration.
 You can do this with:
 
 ```console
-$ nix-shell -p ocis-bin
+$ nix-shell -p ocis_5-bin
 $ mkdir scratch/
 $ cd scratch/
 $ ocis init --config-path . --admin-password "changeme"

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

@@ -16,7 +16,11 @@ in
     services.ocis = {
       enable = lib.mkEnableOption "ownCloud Infinite Scale";
 
-      package = lib.mkPackageOption pkgs "ocis-bin" { };
+      package = lib.mkOption {
+        type = types.package;
+        description = "Which package to use for the ownCloud Infinite Scale instance.";
+        relatedPackages = [ "ocis_5-bin" ];
+      };
 
       configDir = lib.mkOption {
         type = types.nullOr types.path;
@@ -137,6 +141,8 @@ in
   };
 
   config = lib.mkIf cfg.enable {
+    services.ocis.package = lib.mkDefault pkgs.ocis_5-bin;
+
     users.users.${defaultUser} = lib.mkIf (cfg.user == defaultUser) {
       group = cfg.group;
       home = cfg.stateDir;

nixos/tests/ocis.nix

@@ -205,7 +205,7 @@ import ./make-test-python.nix (
       machine.sleep(5)
 
       with subtest("ocis bin works"):
-          machine.succeed("${lib.getExe pkgs.ocis-bin} version")
+          machine.succeed("${lib.getExe pkgs.ocis_5-bin} version")
 
       with subtest("use the web interface to log in with a demo user"):
           machine.succeed("PYTHONUNBUFFERED=1 systemd-cat -t test-runner test-runner ${demoUser} ${demoPassword}")