From c35345038e9f262b64fd52a67c398b917964c348 Mon Sep 17 00:00:00 2001
From: crop <crop_tech@proton.me>
Date: Sun, 21 Jul 2024 20:03:21 +0200
Subject: [PATCH] use nixpkgs.lix if no LixSrc provided

---
 module.nix  |  4 ++--
 overlay.nix | 25 +++++++++++++++----------
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/module.nix b/module.nix
index 5e7f1bf..8aec7e0 100644
--- a/module.nix
+++ b/module.nix
@@ -1,5 +1,5 @@
-{ lix, versionSuffix ? "" }:
+{ lixSrc ? null, versionSuffix ? "" }:
 { pkgs, config, ... }:
 {
-  nixpkgs.overlays = [ (import ./overlay.nix { inherit lix versionSuffix; }) ];
+  nixpkgs.overlays = [ (import ./overlay.nix { inherit lixSrc versionSuffix; }) ];
 }
diff --git a/overlay.nix b/overlay.nix
index ec76bb2..3c2cd46 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -1,16 +1,20 @@
-{ lix, versionSuffix ? "" }:
+{ lixSrc ? null, versionSuffix ? "" }:
 final: prev:
 let
   # This is kind of scary to not override the nix version to pretend to be
   # 2.18 since nixpkgs can introduce new breakage in its Nix unstable CLI
   # usage.
   # https://github.com/nixos/nixpkgs/blob/6afb255d976f85f3359e4929abd6f5149c323a02/nixos/modules/config/nix.nix#L121
-  lixPkg = final.callPackage (lix + "/package.nix") ({
-    versionSuffix = "-${versionSuffix}";
-    # FIXME: do this more sensibly for future releases
-    # https://git.lix.systems/lix-project/lix/issues/406
-    officialRelease = false;
-  });
+  lixPkg =
+    if lixSrc == null
+    then prev.pkgs.lix
+    else
+      final.callPackage (lixSrc + "/package.nix") ({
+        versionSuffix = "-${versionSuffix}";
+        # FIXME: do this more sensibly for future releases
+        # https://git.lix.systems/lix-project/lix/issues/406
+        officialRelease = false;
+      });
 
   # These packages depend on Nix features that Lix does not support
   overridelist_2_18 = [
@@ -26,7 +30,8 @@ let
   override_2_18 = prev.lib.genAttrs overridelist_2_18 (
     name: prev.${name}.override {
       nix = final.nixVersions.nix_2_18_upstream;
-    });
+    }
+  );
 
   warning = ''
     warning: You have the lix overlay included into a nixpkgs import twice,
@@ -81,7 +86,7 @@ let
     pegtl = prev.callPackage ./pegtl.nix { };
   };
 in
-  # Make the overlay idempotent, since flakes passing nixos modules around by
+# Make the overlay idempotent, since flakes passing nixos modules around by
   # value and many other things make it way too easy to include the overlay
   # twice
-  if (prev ? lix-overlay-present) then { lix-overlay-present = 2; } else overlay
+if (prev ? lix-overlay-present) then { lix-overlay-present = 2; } else overlay