tests/nginx-pipeline: move to checks, fix nix flake show

flake.nix

@@ -12,7 +12,7 @@
 
     lib = import ./lib.nix { lib = nixpkgs.lib; };
 
-    packages = let
+    checks = let
       forAllSystems = f:
         nixpkgs.lib.genAttrs [
           "x86_64-linux"
@@ -20,11 +20,13 @@
           "x86_64-darwin"
           "aarch64-darwin"
         ] (system: f nixpkgs.legacyPackages.${system});
-    in forAllSystems (pkgs: {
+    in forAllSystems (pkgs: let
       tests = import ./tests {
         inherit nixpkgs pkgs;
         matrix-lib = self.lib;
       };
+    in {
+      inherit (tests) nginx-pipeline-eval;
     });
   };
 }

tests/default.nix

@@ -1,4 +1,4 @@
 { nixpkgs, pkgs, matrix-lib, ... }:
 {
-  nginx-pipeline = pkgs.callPackage ./nginx-pipeline { inherit nixpkgs matrix-lib; };
+  nginx-pipeline-eval = pkgs.callPackage ./nginx-pipeline { inherit nixpkgs matrix-lib; };
 }

tests/nginx-pipeline/default.nix

@@ -5,7 +5,7 @@ let
     modules = [
       ../../module.nix
       {
-        system.stateVersion = "23.11";
+        system.stateVersion = "25.11";
         boot.isContainer = true;
         services.matrix-synapse-next = {
           enable = true;