Remove Nix files in copyPathToStore

Nix files shouldn't be considered part of the sources, and so they
should be filtered out.  This way, changes to them (that don't change
their meaning) won't force rebuilds.

1 files changed, 5 insertions, 2 deletions

diff --git a/host/start-vm/default.nix b/host/start-vm/default.nix
index ac31022..56be882 100644
--- a/host/start-vm/default.nix
+++ b/host/start-vm/default.nix
@@ -5,13 +5,16 @@
 { lib, stdenv, fetchpatch, meson, ninja, rustc }:
 
 let
-  inherit (lib) cleanSource;
+  inherit (lib) cleanSource cleanSourceWith hasSuffix;
 in
 
 stdenv.mkDerivation {
   name = "start-vm";
 
-  src = cleanSource ./.;
+  src = cleanSourceWith {
+    filter = name: _type: !(hasSuffix ".nix" name);
+    src = cleanSource ./.;
+  };
 
   nativeBuildInputs = [ meson ninja rustc ];