this should work but it doesnt

clients/quadraticserver/dav.nix

@@ -15,7 +15,7 @@
         hostname = domain;
         appSecretFile = config.age.secrets."davSecret.age".path;
         adminPasswordFile = config.age.secrets."davPassword.age".path;
-        package = inputs.nixpkgs-master.legacyPackages.${pkgs.system}.davis;
+        package = inputs.nixpkgs-master.legacyPackages.${pkgs.stdenv.hostPlatform.system}.davis;
         nginx = null;
 
         poolConfig = with config.services.caddy; {

clients/quadraticserver/docs/default.nix

@@ -47,12 +47,18 @@ in
         enableNginx = false;
         redis.createLocally = true;
         postgresql.createLocally = true;
-        backendPackage = pkgs.lasuite-docs.overrideAttrs {
+        backendPackage =
+          inputs.nixpkgs-lasuite.legacyPackages.${pkgs.stdenv.hostPlatform.system}.lasuite-docs.overrideAttrs
+            {
               patches = [ ./enable-languages.patch ];
             };
-        frontendPackage = pkgs.lasuite-docs-frontend.overrideAttrs {
+        frontendPackage =
+          inputs.nixpkgs-lasuite.legacyPackages.${pkgs.stdenv.hostPlatform.system}.lasuite-docs-frontend.overrideAttrs
+            {
               NEXT_PUBLIC_PUBLISH_AS_MIT = "false";
             };
+        collaborationServer.package =
+          inputs.nixpkgs-lasuite.legacyPackages.${pkgs.stdenv.hostPlatform.system}.lasuite-docs-collaboration-server;
         bind = "unix:${socket}";
         inherit s3Url domain;
 

flake.lock

@@ -2155,6 +2155,21 @@
         "type": "github"
       }
     },
+    "nixpkgs-lasuite": {
+      "locked": {
+        "lastModified": 1768663811,
+        "narHash": "sha256-yLh+eSqrsDL9ITH6WmVfcOv9GkABaIkocZ9DkR6dBac=",
+        "owner": "Henry-Hiles",
+        "repo": "nixpkgs",
+        "rev": "950f864b43d347f211cb5df74ead1c0bce2b4e97",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Henry-Hiles",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs-latest": {
       "locked": {
         "lastModified": 1752336159,
@@ -2560,6 +2575,7 @@
         "nix-maid": "nix-maid",
         "nix-matrix-appservices": "nix-matrix-appservices",
         "nixpkgs": "nixpkgs",
+        "nixpkgs-lasuite": "nixpkgs-lasuite",
         "nixpkgs-master": "nixpkgs-master",
         "run0-sudo-shim": "run0-sudo-shim",
         "sdm845": "sdm845",

flake.nix

@@ -3,6 +3,7 @@
     gnome-mobile.url = "github:chuangzhu/nixpkgs-gnome-mobile";
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     nixpkgs-master.url = "github:nixos/nixpkgs";
+    nixpkgs-lasuite.url = "github:Henry-Hiles/nixpkgs";
     wrapper-manager.url = "github:viperML/wrapper-manager";
     flake-parts.url = "github:hercules-ci/flake-parts";
     nix-maid.url = "github:viperML/nix-maid";

modules/mobile/repart.nix

@@ -47,7 +47,7 @@ in
             }
           }/shell.efi";
           "/EFI/BOOT/BOOT${lib.toUpper efiArch}.EFI".source =
-            "${pkgs.systemd}/lib/systemd/boot/efi/systemd-boot${efiArch}.efi";
+            "${pkgs.stdenv.hostPlatform.systemd}/lib/systemd/boot/efi/systemd-boot${efiArch}.efi";
           "/EFI/Linux/${config.system.boot.loader.ukiFile}".source =
             "${config.system.build.uki}/${config.system.boot.loader.ukiFile}";
           "/loader/loader.conf".source = crossPkgs.writeText "loader.conf" ''