1 files changed, 26 insertions, 8 deletions

diff --git a/system-profiles/core/default.nix b/system-profiles/core/default.nix
index fede386b..71d0619a 100644
--- a/system-profiles/core/default.nix
+++ b/system-profiles/core/default.nix
@@ -1,4 +1,4 @@
-{ flake, flakeInputs, home-manager, path, hostName, config, lib, pkgs, customUtils, ... }:
+{ flake, flakeInputs, home-manager, path, hostName, config, options, lib, pkgs, customUtils, ... }:
 
 with lib;
 
@@ -83,11 +83,22 @@ in {
       '';
     };
 
-    nixpkgs.flakeInput = mkOption {
-      type = types.enum (attrNames flakeInputs);
-      default = if flakeInputs ? "nixpkgs-${hostName}" then "nixpkgs-${hostName}" else "nixpkgs";
-      defaultText = literalExpression ''if flakeInputs ? "nixpkgs-''${hostName}" then "nixpkgs-''${hostName}" else "nixpkgs"'';
-      internal = true;
+    nixpkgs = {
+      flakeInput = mkOption {
+        type = types.enum (attrNames flakeInputs);
+        default = if flakeInputs ? "nixpkgs-${hostName}" then "nixpkgs-${hostName}" else "nixpkgs";
+        defaultText = literalExpression ''if flakeInputs ? "nixpkgs-''${hostName}" then "nixpkgs-''${hostName}" else "nixpkgs"'';
+        internal = true;
+      };
+      extraOverlays = mkOption {
+        default = [];
+        type = types.listOf (mkOptionType {
+          name = "nixpkgs-overlay";
+          description = "nixpkgs overlay";
+          check = lib.isFunction;
+          merge = lib.mergeOneOption;
+        });
+      };
     };
   };
 
@@ -97,7 +108,7 @@ in {
       system.configurationRevision = mkIf (flake ? rev) flake.rev;
 
       nixpkgs.pkgs = import (flakeInputs.${config.nixpkgs.flakeInput}.outPath + "/pkgs/top-level") {
-        overlays = attrValues flake.overlays;
+        overlays = attrValues flake.overlays ++ config.nixpkgs.extraOverlays;
         config = config.nixpkgs.externalConfig;
         localSystem = config.nixpkgs.system;
       };
@@ -131,7 +142,7 @@ in {
       };
 
       systemd.tmpfiles.rules = [
-        "L+ /run/nixpkgs - - - - ${flakeInputs.nixpkgs.outPath}"
+        "L+ /run/nixpkgs - - - - ${flakeInputs.${config.nixpkgs.flakeInput}.outPath}"
         "L+ /run/nixpkgs-overlays.nix - - - - ${pkgs.writeText "overlays.nix" ''
           with builtins;
 
@@ -200,6 +211,7 @@ in {
   ++ (optional (options ? system.etc) {
     boot.initrd.systemd.enable = lib.mkDefault true;
     system.etc.overlay.enable = lib.mkDefault true;
+    system.etc.overlay.mutable = lib.mkDefault (!config.systemd.sysusers.enable);
     systemd.sysusers.enable = lib.mkDefault true;
 
     # Random perl remnants
@@ -210,5 +222,11 @@ in {
     boot.loader.grub.enable = lib.mkDefault false;
     environment.defaultPackages = lib.mkDefault [ ];
     documentation.info.enable = lib.mkDefault false;
+  })
+  ++ (optional (options ? nixpkgs.flake) {
+    nixpkgs.flake = {
+      setNixPath = false;
+      setFlakeRegistry = false;
+    };
   }));
 }