From 86bc20fca0fc5de0bbc12037ec0bb6d092a29568 Mon Sep 17 00:00:00 2001
From: NullBite <me@nullbite.com>
Date: Tue, 30 Jan 2024 20:59:21 +0100
Subject: [PATCH] Add start of supergfxd.nix

i have the option definition and the config derivations, but i still
need to actually write the configs and figure out how to assert that the
config is valid
---
 hosts/slab/supergfxd.nix | 77 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 hosts/slab/supergfxd.nix

diff --git a/hosts/slab/supergfxd.nix b/hosts/slab/supergfxd.nix
new file mode 100644
index 0000000..f5f888c
--- /dev/null
+++ b/hosts/slab/supergfxd.nix
@@ -0,0 +1,77 @@
+{ pkgs, lib, config, options, ... }@args:
+let
+  gfx = {
+    Integrated = {
+      supergfxd = pkgs.writeText "supergfxd-integrated" ''
+{
+  "mode": "Integrated",
+  "vfio_enable": false,
+  "vfio_save": false,
+  "always_reboot": false,
+  "no_logind": false,
+  "logout_timeout_s": 180,
+  "hotplug_type": "None"
+}
+      '';
+      modprobe = pkgs.writeText "supergfxd-integrated-modprobe" ''
+# Automatically generated by supergfxd
+blacklist nouveau
+alias nouveau off
+blacklist nvidia_drm
+blacklist nvidia_uvm
+blacklist nvidia_modeset
+blacklist nvidia
+alias nvidia off
+
+options nvidia-drm modeset=1
+
+      '';
+    };
+    Hybrid = {
+      supergfxd = pkgs.writeText "supergfxd-hybrid" ''
+{
+  "mode": "Hybrid",
+  "vfio_enable": false,
+  "vfio_save": false,
+  "always_reboot": false,
+  "no_logind": false,
+  "logout_timeout_s": 180,
+  "hotplug_type": "None"
+}
+      '';
+      modprobe = pkgs.writeText "supergfxd-hybrid-modprobe" ''
+# Automatically generated by supergfxd
+blacklist nouveau
+alias nouveau off
+options nvidia NVreg_DynamicPowerManagement=0x02
+
+options nvidia-drm modeset=1
+
+      '';
+    };
+  };
+  cfg = config.nixfiles.supergfxd;
+
+  isKeyInAttrset = let
+    getKeys = attrset: lib.mapAttrsToList (name: _: name) attrset;
+    isInList = key: list: lib.any (x: x == key) list;
+  in key: attrset: isInList key (getKeys attrset);
+
+  inherit (lib) mkIf mkOption types;
+in {
+  options = {
+    nixfiles.supergfxd.profile = mkOption {
+      type = types.str;
+      default = "";
+      example = "Integrated";
+      description = "supergfxd profile to use";
+    };
+  };
+
+  config = {
+    etc = mkIf (!(cfg.profile == ""))  {
+      # TODO figure out here how to assert if the value is in the gfx attrset
+      # TODO actually configure the system settings here
+    };
+  };
+}