From 25c00be8fd497f9cd732eb63af6e20bdf17e240a Mon Sep 17 00:00:00 2001
From: Geoffrey Preud'homme <geoffrey@greenhost.nl>
Date: Tue, 26 Mar 2024 17:04:16 +0100
Subject: [PATCH] Ability to use unstable packages

---
 flake.nix | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/flake.nix b/flake.nix
index 911dfe3..1a57c34 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,6 +3,7 @@
 
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-23.11";
+    unixpkgs.url = "nixpkgs";
     # OS
     disko = {
       url = "disko";
@@ -33,7 +34,7 @@
     nur.url = "github:nix-community/NUR";
   };
 
-  outputs = { self, nixpkgs, disko, nix-on-droid, stylix, ... }@attrs:
+  outputs = { self, nixpkgs, unixpkgs, disko, nix-on-droid, stylix, ... }@attrs:
     let
       nixpkgsConfig = {
         config = {
@@ -43,6 +44,15 @@
             "nix-2.15.3"
           ];
         };
+        overlays = [
+          (final: prev: { unstable = unixpkgs.legacyPackages.${prev.system}.pkgs; })
+        ];
+        # Only allows importing packages, not NixOS modules. If that is needed, see:
+        # https://discourse.nixos.org/t/how-to-use-unstable-nixpkgs-in-imports-with-flake/17414/7
+      };
+      homeManagerConfig = {
+        sharedModules = [ self.homeManagerModules.dotfiles ];
+        extraSpecialArgs = attrs;
       };
       lib = {
         nixosSystem = { system, modules ? [ ] }: nixpkgs.lib.nixosSystem {
@@ -52,10 +62,7 @@
             self.nixosModules.dotfiles
             {
               nixpkgs = nixpkgsConfig;
-              home-manager = {
-                sharedModules = [ self.homeManagerModules.dotfiles ];
-                extraSpecialArgs = attrs;
-              };
+              home-manager = homeManagerConfig;
             }
           ];
         };
@@ -66,7 +73,7 @@
           modules = modules ++ [
             self.nixOnDroidModules.dotfiles
             {
-              home-manager.sharedModules = [ self.homeManagerModules.dotfiles ];
+              home-manager = homeManagerConfig;
             }
           ];
         };