merge in poseidon configs temporarily

hosts/servers/poseidon/old/nvidia.nix

@@ -0,0 +1,57 @@
+{lib, config, ...}:
+
+{
+  services.xserver.videoDrivers = ["nvidia"];
+
+  hardware = {
+    graphics = {
+      enable = true;
+    };
+
+    nvidia-container-toolkit.enable = true;
+
+    nvidia = {
+      # Modesetting is required.
+      modesetting.enable = true;
+
+      # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
+      # Enable this if you have graphical corruption issues or application crashes after waking
+      # up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead 
+      # of just the bare essentials.
+      powerManagement.enable = false;
+
+      # Fine-grained power management. Turns off GPU when not in use.
+      # Experimental and only works on modern Nvidia GPUs (Turing or newer).
+      powerManagement.finegrained = false;
+
+      # Use the NVidia open source kernel module (not to be confused with the
+      # independent third-party "nouveau" open source driver).
+      # Support is limited to the Turing and later architectures. Full list of 
+      # supported GPUs is at: 
+      # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus 
+      # Only available from driver 515.43.04+
+      open = false;
+
+      # Enable the Nvidia settings menu,
+      # accessible via `nvidia-settings`.
+      nvidiaSettings = true;
+
+      # Optionally, you may need to select the appropriate driver version for your specific GPU.
+      # package = config.boot.kernelPackages.nvidiaPackages.stable;
+      package = config.boot.kernelPackages.nvidiaPackages.mkDriver {
+        version = "580.105.08";
+
+        # Update these hashes to whatever nix tells you to,
+        # and set them back to `lib.fakeHash` every time you
+        # change the version.
+        sha256_64bit = "sha256-2cboGIZy8+t03QTPpp3VhHn6HQFiyMKMjRdiV2MpNHU=";
+        openSha256 = "sha256-FGmMt3ShQrw4q6wsk8DSvm96ie5yELoDFYinSlGZcwQ=";
+        settingsSha256 = "sha256-YvzWO1U3am4Nt5cQ+b5IJ23yeWx5ud1HCu1U0KoojLY=";
+
+        # You can leave these unspecified
+        sha256_aarch64 = lib.fakeHash;
+        persistencedSha256 = lib.fakeHash;
+      };
+    };
+  };
+}