3 files changed, 34 insertions, 1 deletions
diff --git a/flake.lock b/flake.lock
index b1486ea6..df6039cf 100644
--- a/flake.lock
+++ b/flake.lock
@@ -89,6 +89,21 @@
         "type": "github"
       }
     },
+    "nix-filter": {
+      "locked": {
+        "lastModified": 1693833173,
+        "narHash": "sha256-hlMABKrGbEiJD5dwUSfnw1CQ3bG7KKwDV+Nx3bEZd7U=",
+        "owner": "numtide",
+        "repo": "nix-filter",
+        "rev": "ac030bd9ba98e318e1f4c4328d60766ade8ebe8b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "nix-filter",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1693626178,
@@ -156,6 +171,7 @@
         "flake-compat": "flake-compat",
         "flake-parts": "flake-parts",
         "libnbtplusplus": "libnbtplusplus",
+        "nix-filter": "nix-filter",
         "nixpkgs": "nixpkgs",
         "pre-commit-hooks": "pre-commit-hooks"
       }
diff --git a/flake.nix b/flake.nix
index a58d66fb..afb0ec63 100644
--- a/flake.nix
+++ b/flake.nix
@@ -4,6 +4,7 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
     flake-parts.url = "github:hercules-ci/flake-parts";
+    nix-filter.url = "github:numtide/nix-filter";
     pre-commit-hooks = {
       url = "github:cachix/pre-commit-hooks.nix";
       inputs.nixpkgs.follows = "nixpkgs";
diff --git a/nix/distribution.nix b/nix/distribution.nix
index c8fa01c5..ca9999dc 100644
--- a/nix/distribution.nix
+++ b/nix/distribution.nix
@@ -26,11 +26,27 @@
     overlays.default = final: prev: let
       version = builtins.substring 0 8 self.lastModifiedDate or "dirty";
 
+      filteredSelf = inputs.nix-filter.lib.filter {
+        root = ../.;
+        include = [
+          "buildconfig"
+          "cmake"
+          "launcher"
+          "libraries"
+          "program_info"
+          "tests"
+          ../COPYING.md
+          ../CMakeLists.txt
+        ];
+      };
+
       # common args for prismlauncher evaluations
       unwrappedArgs = {
+        self = filteredSelf;
+
         inherit (inputs) libnbtplusplus;
         inherit ((final.darwin or prev.darwin).apple_sdk.frameworks) Cocoa;
-        inherit self version;
+        inherit version;
       };
     in {
       prismlauncher-qt5-unwrapped = prev.libsForQt5.callPackage ./pkg unwrappedArgs;