From cd5d300bba7ec9c8938452b440aa0053a5fb4f91 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edward=20Tj=C3=B6rnhammar?= <ed@cflags.cc>
Date: Mon, 20 Apr 2026 18:11:52 +0200
Subject: [PATCH] linuxPackages.nvidiaPackages.dc_5{7,8,9}0: add compatible
 open kmods

---
 nixos/modules/hardware/video/nvidia.nix       | 7 +++++++
 pkgs/os-specific/linux/nvidia-x11/default.nix | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/nixos/modules/hardware/video/nvidia.nix b/nixos/modules/hardware/video/nvidia.nix
index d8c42c128438..cef902557555 100644
--- a/nixos/modules/hardware/video/nvidia.nix
+++ b/nixos/modules/hardware/video/nvidia.nix
@@ -356,6 +356,13 @@ in
                 It is suggested to use the open source kernel modules on Turing or later GPUs (RTX series, GTX 16xx), and the closed source modules otherwise.
               '';
             }
+            {
+              assertion = !cfg.open || (nvidia_x11.open != null);
+              message = ''
+                The selected NVIDIA package does not provide open kernel modules.
+                Set hardware.nvidia.open = false or choose a package branch with open module support.
+              '';
+            }
           ];
           boot = {
             blacklistedKernelModules = [
diff --git a/pkgs/os-specific/linux/nvidia-x11/default.nix b/pkgs/os-specific/linux/nvidia-x11/default.nix
index 709f3d838af5..44976a9ceec8 100644
--- a/pkgs/os-specific/linux/nvidia-x11/default.nix
+++ b/pkgs/os-specific/linux/nvidia-x11/default.nix
@@ -126,6 +126,7 @@ rec {
     sha256_64bit = "sha256-ueL4BpN4FDHMh/TNKRCeEz3Oy1ClDWto1LO/LWlr1ok=";
     persistencedSha256 = "sha256-wsNeuw7IaY6Qc/i/AzT/4N82lPjkwfrhxidKWUtcwW8=";
     fabricmanagerSha256 = "sha256-f/AQ8HrgoqBQyXNrXA/UaI4OMQ9QcjjYWIhr1/5uM74=";
+    openSha256 = "sha256-hECHfguzwduEfPo5pCDjWE/MjtRDhINVr4b1awFdP44=";
     useSettings = false;
     usePersistenced = true;
     useFabricmanager = true;
@@ -137,6 +138,7 @@ rec {
     sha256_64bit = "sha256-TKxT5I+K3/Zh1HyHiO0kBZokjJ/YCYzq/QiKSYmG7CY=";
     persistencedSha256 = "sha256-J1UwS0o/fxz45gIbH9uaKxARW+x4uOU1scvAO4rHU5Y=";
     fabricmanagerSha256 = "sha256-tyCHKIr8nxVfZIqcWKAwRoMLzmGlsOUhDlO5V/9W97Y=";
+    openSha256 = "sha256-ychsaurbQ2KNFr/SAprKI2tlvAigoKoFU1H7+SaxSrY=";
     useSettings = false;
     usePersistenced = true;
     useFabricmanager = true;
@@ -148,6 +150,7 @@ rec {
     sha256_64bit = "sha256-AlaGfggsr5PXsl+nyOabMWBiqcbHLG4ij617I4xvoX0=";
     persistencedSha256 = "sha256-x4K0Gp89LdL5YJhAI0AydMRxl6fyBylEnj+nokoBrK8=";
     fabricmanagerSha256 = "sha256-jSTKzeRVTUcYma1Cb0ajSdXKCi6KzUXCp2OByPSWSR4=";
+    openSha256 = "sha256-aTV5J4zmEgRCOavo6wLwh5efOZUG+YtoeIT/tnrC1Hg=";
     useSettings = false;
     usePersistenced = true;
     useFabricmanager = true;