feat(nix): add source filtering

this - along with garnix - should mostly eliminate unneeded (re)builds

Signed-off-by: seth <getchoo@tuta.io>

1 files changed, 17 insertions, 1 deletions

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;