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-rw-r--r--nixos/default.nix4
-rw-r--r--nixos/modules/flake.nix25
2 files changed, 26 insertions, 3 deletions
diff --git a/nixos/default.nix b/nixos/default.nix
index edf3622..dd1dd18 100644
--- a/nixos/default.nix
+++ b/nixos/default.nix
@@ -1,9 +1,9 @@
-{ self, nixpkgs, ... } @ inputs:
+{ self, unstable-small, ... } @ inputs:
 
 {
   alpha = self.lib.mkSystem {
     name = "alpha";
-    nixpkgs = nixpkgs;
+    nixpkgs = unstable-small;
     overlays = with inputs; [ chaotic-nixpkgs.overlay ];
     extraModules = [
       inputs.sops-nix.nixosModules.sops
diff --git a/nixos/modules/flake.nix b/nixos/modules/flake.nix
index a88f9d0..7dc405b 100644
--- a/nixos/modules/flake.nix
+++ b/nixos/modules/flake.nix
@@ -1,5 +1,11 @@
-{ config, pkgs, lib, ... }:
+{ config, pkgs, unstable, unstable-small, nixpkgs-2111, lib, ... }:
 
+let
+  base = "/etc/nixpkgs/channels";
+  nixpkgsPath = "${base}/nixpkgs";
+  nixpkgsUnstablePath = "${base}/nixpkgsUnstable";
+  nixpkgs2111Path = "${base}/nixpkgs2111";
+in
 {
   options.nix.flakes.enable = lib.mkEnableOption "nix flakes";
 
@@ -7,6 +13,23 @@
     nix = {
       package = pkgs.nixUnstable;
       experimentalFeatures = "nix-command flakes";
+
+      registry.nixpkgs.flake = unstable-small;
+      registry.nixpkgsUnstable.flake = unstable;
+      registry.nixpkgs2111.flake = nixpkgs-2111;
+
+      nixPath = [
+        "nixpkgs=${nixpkgsPath}"
+        "nixpkgsUnstable=${nixpkgsUnstablePath}"
+        "nixpkgs2111=${nixpkgs2111Path}"
+        "/nix/var/nix/profiles/per-user/root/channels"
+      ];
     };
+
+    systemd.tmpfiles.rules = [
+      "L+ ${nixpkgsPath}         - - - - ${unstable-small}"
+      "L+ ${nixpkgsUnstablePath} - - - - ${unstable}"
+      "L+ ${nixpkgs2111Path} - - - - ${nixpkgs-2111}"
+    ];
   };
 }