NixOS modules

projects/invokeai/default.nix

@@ -1,4 +1,4 @@
-{ inputs, lib, ... }:
+{ config, inputs, lib, withSystem, ... }:
 
 {
   perSystem = { config, pkgs, ... }: let
@@ -17,4 +17,27 @@
       };
     };
   };
+
+  flake.nixosModules = let
+    packageModule = pkgAttrName: { pkgs, ... }: {
+      services.invokeai.package = withSystem pkgs.system (
+        { config, ... }: lib.mkOptionDefault config.packages.${pkgAttrName}
+      );
+    };
+  in {
+    invokeai = ./nixos;
+    invokeai-amd = {
+      imports = [
+        config.flake.nixosModules.invokeai
+        ./nixos/amd.nix
+        (packageModule "invokeai-amd")
+      ];
+    };
+    invokeai-nvidia = {
+      imports = [
+        config.flake.nixosModules.invokeai
+        (packageModule "invokeai-nvidia")
+      ];
+    };
+  };
 }

projects/invokeai/nixos/amd.nix

@@ -0,0 +1,12 @@
+{ pkgs, ... }:
+
+{
+  systemd = {
+    # Allow "unsupported" AMD GPUs
+    services.invokeai.environment.HSA_OVERRIDE_GFX_VERSION = "10.3.0";
+    # HACK: The PyTorch build we use on ROCm wants this to exist
+    tmpfiles.rules = [
+      "L+ /opt/amdgpu - - - - ${pkgs.libdrm}"
+    ];
+  };
+}

projects/invokeai/nixos/default.nix

@@ -0,0 +1,116 @@
+{ config, lib, ... }:
+
+let
+  inherit (lib)
+    mkIf mkOption mkEnableOption types
+    escapeShellArgs getExe optionalString
+  ;
+
+  cfg = config.services.invokeai;
+in
+
+{
+  options.services.invokeai = {
+    enable = mkEnableOption "InvokeAI Web UI for Stable Diffusion";
+
+    package = mkOption {
+      description = "Which InvokeAI package to use.";
+      type = types.package;
+    };
+
+    user = mkOption {
+      description = "Which user to run InvokeAI as.";
+      default = "invokeai";
+      type = types.str;
+    };
+
+    group = mkOption {
+      description = "Which group to run InvokeAI as.";
+      default = "invokeai";
+      type = types.str;
+    };
+
+    host = mkOption {
+      description = "Which IP address to listen on.";
+      default = "127.0.0.1";
+      type = types.str;
+    };
+
+    port = mkOption {
+      description = "Which port to listen on.";
+      default = 9090;
+      type = types.port;
+    };
+
+    dataDir = mkOption {
+      description = "Where to store InvokeAI's state.";
+      default = "/var/lib/invokeai";
+      type = types.path;
+    };
+
+    maxLoadedModels = mkOption {
+      description = "Maximum amount of models to keep in VRAM at once.";
+      default = 1;
+      type = types.ints.positive;
+    };
+
+    nsfwChecker = mkEnableOption "the NSFW Checker";
+
+    precision = mkOption {
+      description = "Set model precision.";
+      default = "auto";
+      type = types.enum [ "auto" "float32" "autocast" "float16" ];
+    };
+
+    extraArgs = mkOption {
+      description = "Extra command line arguments.";
+      default = [];
+      type = with types; listOf str;
+    };
+  };
+
+  config = let
+
+    yesno = enable: text: "--${optionalString (!enable) "no-"}${text}";
+
+    cliArgs = [
+      "--web"
+      "--host" cfg.host
+      "--port" cfg.port
+      "--root_dir" cfg.dataDir
+      "--max_loaded_models" cfg.maxLoadedModels
+      (yesno cfg.nsfwChecker "nsfw_checker")
+      "--precision" cfg.precision
+    ] ++ cfg.extraArgs;
+    initialModelsPath = "${cfg.package}/${cfg.package.pythonModule.sitePackages}/invokeai/configs/INITIAL_MODELS.yaml";
+  in mkIf cfg.enable {
+    users.users = mkIf (cfg.user == "invokeai") {
+      invokeai = {
+        isSystemUser = true;
+        inherit (cfg) group;
+      };
+    };
+    users.groups = mkIf (cfg.group == "invokeai") {
+      invokeai = {};
+    };
+    systemd.services.invokeai = {
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      preStart = ''
+        ln -sf ${initialModelsPath} '${cfg.dataDir}/configs/INITIAL_MODELS.yaml'
+        cp -L --no-clobber --no-preserve=mode ${initialModelsPath} '${cfg.dataDir}/configs/models.yaml'
+      '';
+      environment.HOME = "${cfg.dataDir}/.home";
+      serviceConfig = {
+        User = cfg.user;
+        Group = cfg.group;
+        ExecStart = "${getExe cfg.package} ${escapeShellArgs cliArgs}";
+      };
+    };
+    systemd.tmpfiles.rules = [
+      "d '${cfg.dataDir}' 0755 ${cfg.user} ${cfg.group} - -"
+      "d '${cfg.dataDir}/configs' 0755 ${cfg.user} ${cfg.group} - -"
+      "d '${cfg.dataDir}/.home' 0750 ${cfg.user} ${cfg.group} - -"
+    ];
+  };
+}

projects/koboldai/default.nix

@@ -1,4 +1,4 @@
-{ inputs, lib, ... }:
+{ config, inputs, lib, withSystem, ... }:
 
 {
   perSystem = { config, pkgs, ... }: let
@@ -17,4 +17,27 @@
       };
     };
   };
+
+  flake.nixosModules = let
+    packageModule = pkgAttrName: { pkgs, ... }: {
+      services.koboldai.package = withSystem pkgs.system (
+        { config, ... }: lib.mkOptionDefault config.packages.${pkgAttrName}
+      );
+    };
+  in {
+    koboldai = ./nixos;
+    koboldai-amd = {
+      imports = [
+        config.flake.nixosModules.koboldai
+        ./nixos/amd.nix
+        (packageModule "koboldai-amd")
+      ];
+    };
+    koboldai-nvidia = {
+      imports = [
+        config.flake.nixosModules.koboldai
+        (packageModule "koboldai-nvidia")
+      ];
+    };
+  };
 }

projects/koboldai/nixos/amd.nix

@@ -0,0 +1,12 @@
+{ pkgs, ... }:
+
+{
+  systemd = {
+    # Allow "unsupported" AMD GPUs
+    services.koboldai.environment.HSA_OVERRIDE_GFX_VERSION = "10.3.0";
+    # HACK: The PyTorch build we use on ROCm wants this to exist
+    tmpfiles.rules = [
+      "L+ /opt/amdgpu - - - - ${pkgs.libdrm}"
+    ];
+  };
+}

projects/koboldai/nixos/default.nix

@@ -0,0 +1,87 @@
+{ config, lib, ... }:
+
+let
+  inherit (lib)
+    mkIf mkOption mkEnableOption types
+    escapeShellArgs getExe optional
+  ;
+
+  cfg = config.services.koboldai;
+in
+
+{
+  options.services.koboldai= {
+    enable = mkEnableOption "KoboldAI Web UI";
+
+    package = mkOption {
+      description = "Which KoboldAI package to use.";
+      type = types.package;
+    };
+
+    user = mkOption {
+      description = "Which user to run KoboldAI as.";
+      default = "koboldai";
+      type = types.str;
+    };
+
+    group = mkOption {
+      description = "Which group to run KoboldAI as.";
+      default = "koboldai";
+      type = types.str;
+    };
+
+    host = mkOption {
+      description = "Whether to make KoboldAI remotely accessible.";
+      default = false;
+      type = types.bool;
+    };
+
+    port = mkOption {
+      description = "Which port to listen on.";
+      default = 5000;
+      type = types.port;
+    };
+
+    dataDir = mkOption {
+      description = "Where to store KoboldAI's state.";
+      default = "/var/lib/koboldai";
+      type = types.path;
+    };
+
+    extraArgs = mkOption {
+      description = "Extra command line arguments.";
+      default = [];
+      type = with types; listOf str;
+    };
+  };
+
+  config = let
+    cliArgs = (optional cfg.host "--host") ++ [
+      "--port" cfg.port
+    ] ++ cfg.extraArgs;
+  in mkIf cfg.enable {
+    users.users = mkIf (cfg.user == "koboldai") {
+      koboldai = {
+        isSystemUser = true;
+        inherit (cfg) group;
+      };
+    };
+    users.groups = mkIf (cfg.group == "koboldai") {
+      koboldai = {};
+    };
+    systemd.services.koboldai = {
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      environment.HOME = cfg.dataDir;
+      serviceConfig = {
+        User = cfg.user;
+        Group = cfg.group;
+        ExecStart = "${getExe cfg.package} ${escapeShellArgs cliArgs}";
+        PrivateTmp = true;
+      };
+    };
+    systemd.tmpfiles.rules = [
+      "d '${cfg.dataDir}' 0755 ${cfg.user} ${cfg.group} - -"
+    ];
+  };
+}