refactor(nixpkgs): Configure nixpkgs via the module system

2 files changed, 41 insertions, 0 deletions

diff --git a/modules/system/default.nix b/modules/system/default.nix
index 0eef0b7f..6a1fe03a 100644
--- a/modules/system/default.nix
+++ b/modules/system/default.nix
@@ -11,6 +11,7 @@ in {
     ./impermanence
     ./locale
     ./networking
+    ./nixpkgs
     ./polkit
     ./power
     ./secrets
diff --git a/modules/system/nixpkgs/default.nix b/modules/system/nixpkgs/default.nix
new file mode 100644
index 00000000..ca28c7bd
--- /dev/null
+++ b/modules/system/nixpkgs/default.nix
@@ -0,0 +1,40 @@
+{
+  lib,
+  config,
+  myPkgs,
+  pkgs,
+  ...
+}: let
+  cfg = config.soispha.nixpkgs;
+
+  myPkgsOverlay = self: super: myPkgs;
+in {
+  options.soispha.nixpkgs = {
+    enable = lib.mkEnableOption "Nixpkgs config";
+    systemName = lib.mkOption {
+      description = "The name of the system.";
+      example = "x86_64-linux";
+      type = lib.types.str;
+    };
+  };
+  config = {
+    nixpkgs = lib.mkIf cfg.enable {
+      hostPlatform = cfg.systemName;
+      config = {
+        hostSystem = cfg.systemName;
+        overlays = [
+          myPkgsOverlay
+        ];
+        config = {
+          # TODO: this fails because of the root tempsize, which should be increased
+          # contentAddressedByDefault = true;
+
+          allowUnfreePredicate = pkg:
+            builtins.elem (lib.getName pkg) [
+              "pypemicro" # required by pynitrokey
+            ];
+        };
+      };
+    };
+  };
+}