1 files changed, 87 insertions, 0 deletions
diff --git a/nixos/modules/misc/nixpkgs.nix b/nixos/modules/misc/nixpkgs.nix
new file mode 100644
index 00000000000..0df0e57c98e
--- /dev/null
+++ b/nixos/modules/misc/nixpkgs.nix
@@ -0,0 +1,87 @@
+{ config, pkgs, ... }:
+
+with pkgs.lib;
+
+let
+  isConfig = x:
+    builtins.isAttrs x || builtins.isFunction x;
+
+  optCall = f: x:
+    if builtins.isFunction f
+    then f x
+    else f;
+
+  mergeConfig = lhs_: rhs_:
+    let
+      lhs = optCall lhs_ { inherit pkgs; };
+      rhs = optCall rhs_ { inherit pkgs; };
+    in
+    lhs // rhs //
+    optionalAttrs (lhs ? packageOverrides) {
+      packageOverrides = pkgs:
+        optCall lhs.packageOverrides pkgs //
+        optCall (attrByPath ["packageOverrides"] ({}) rhs) pkgs;
+    };
+
+  configType = mkOptionType {
+    name = "nixpkgs config";
+    check = traceValIfNot isConfig;
+    merge = fold mergeConfig {};
+  };
+
+in
+
+{
+  options = {
+
+    nixpkgs.config = mkOption {
+      default = {};
+      example = literalExample
+        ''
+          { firefox.enableGeckoMediaPlayer = true;
+            packageOverrides = pkgs: {
+              firefox60Pkgs = pkgs.firefox60Pkgs.override {
+                enableOfficialBranding = true;
+              };
+            };
+          }
+        '';
+      type = configType;
+      description = ''
+        The configuration of the Nix Packages collection.  (For
+        details, see the Nixpkgs documentation.)  It allows you to set
+        package configuration options, and to override packages
+        globally through the <varname>packageOverrides</varname>
+        option.  The latter is a function that takes as an argument
+        the <emphasis>original</emphasis> Nixpkgs, and must evaluate
+        to a set of new or overridden packages.
+      '';
+    };
+
+    nixpkgs.system = mkOption {
+      default = pkgs.stdenv.system;
+      description = ''
+        Specifies the Nix platform type for which NixOS should be built.
+        If unset, it defaults to the platform type of your host system
+        (<literal>${builtins.currentSystem}</literal>).
+        Specifying this option is useful when doing distributed
+        multi-platform deployment, or when building virtual machines.
+      '';
+    };
+
+  };
+
+  config = {
+
+    # FIXME
+    nixpkgs.config.packageOverrides = pkgs: {
+      #udev = pkgs.systemd;
+      slim = pkgs.slim.override (args: if args ? consolekit then { consolekit = null; } else { });
+      lvm2 = pkgs.lvm2.override { udev = pkgs.systemd; };
+      upower = pkgs.upower.override { useSystemd = true; };
+      polkit = pkgs.polkit.override { useSystemd = true; };
+      consolekit = null;
+    };
+
+  };
+}