From 739de7a8fa0ca6c990fd9e7608f69c809cd6f352 Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Wed, 23 Mar 2022 20:45:38 +0100
Subject: ...

---
 flake.lock               | 20 +++++++++++++++++++-
 flake.nix                | 10 +++++++---
 system-profiles/core.nix | 13 ++++++++++++-
 3 files changed, 38 insertions(+), 5 deletions(-)

diff --git a/flake.lock b/flake.lock
index 15e8a7b7..7bdd2a6b 100644
--- a/flake.lock
+++ b/flake.lock
@@ -40,6 +40,23 @@
       }
     },
     "flake-compat_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1641205782,
+        "narHash": "sha256-4jY7RCWUoZ9cKD8co0/4tFARpWB+57+r1bLLvXNJliY=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "b7547d3eed6f32d06102ead8991ec52ab0a4f1a7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "ref": "master",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
+    "flake-compat_3": {
       "flake": false,
       "locked": {
         "lastModified": 1627913399,
@@ -109,7 +126,7 @@
     },
     "nvfetcher": {
       "inputs": {
-        "flake-compat": "flake-compat_2",
+        "flake-compat": "flake-compat_3",
         "flake-utils": "flake-utils",
         "nixpkgs": [
           "nixpkgs"
@@ -133,6 +150,7 @@
     "root": {
       "inputs": {
         "deploy-rs": "deploy-rs",
+        "flake-compat": "flake-compat_2",
         "home-manager": "home-manager",
         "nixpkgs": "nixpkgs",
         "nvfetcher": "nvfetcher",
diff --git a/flake.nix b/flake.nix
index a218d2fe..bf412444 100644
--- a/flake.nix
+++ b/flake.nix
@@ -36,6 +36,13 @@
       ref = "master";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    flake-compat = {
+      type = "github";
+      owner = "edolstra";
+      repo = "flake-compat";
+      ref = "master";
+      flake = false;
+    };
   };
 
   outputs = { self, nixpkgs, home-manager, sops-nix, deploy-rs, nvfetcher, ... }@inputs:
@@ -166,9 +173,6 @@
         homeConfigurations = listToAttrs (concatLists (mapAttrsToList (hostname: nixosConfig: mapAttrsToList (username: configuration: nameValuePair "${username}@${hostname}" { inherit (configuration.home) activationPackage; }) nixosConfig.config.home-manager.users) self.nixosConfigurations));
 
         overlays = mapAttrs (_name: path: mkOverlay path) overlayPaths;
-        overlays-path = forAllSystems (system: systemPkgs: systemPkgs.writeText "overlays.nix" ''
-          map import (builtins.attrValues (builtins.fromJSON ${escapeNixString (toJSON overlayPaths)}))
-        '');
 
         packages = mapAttrs (_name: filterAttrs (_name: isDerivation)) packages;
         packages' = mapAttrs (_name: filterAttrs (_name: value: !(isDerivation value))) packages;
diff --git a/system-profiles/core.nix b/system-profiles/core.nix
index 92e068b4..8c4325e2 100644
--- a/system-profiles/core.nix
+++ b/system-profiles/core.nix
@@ -53,7 +53,18 @@ in {
       '';
       nixPath = [
         "nixpkgs=${flakeInputs.nixpkgs.legacyPackages.${config.nixpkgs.system}.path}"
-        # "nixpkgs-overlays=${flake.overlays-path.${config.nixpkgs.system}}"
+        "nixpkgs-overlays=${pkgs.writeText "overlays.nix" ''
+          attrValues (import
+            (
+              let lock = builtins.fromJSON (builtins.readFile ${toString ../flake.lock}); in
+              fetchTarball {
+                url = "https://github.com/edolstra/flake-compat/archive/''${lock.nodes.flake-compat.locked.rev}.tar.gz";
+                sha256 = lock.nodes.flake-compat.locked.narHash;
+              }
+            )
+            { src = ${toString ../.}; }
+          ).defaultNix.overlays
+        ''}"
       ];
       registry =
         let override = { self = "nixos"; };
-- 
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