rpm: fix helper script paths

pkgs/tools/package-management/rpm/default.nix

@@ -50,6 +50,11 @@ stdenv.mkDerivation rec {
       sed -i $out/lib/rpm/macros -e "s/^%__$tool.*/%__$tool $tool/"
     done
 
+    # Avoid helper scripts pointing to absolute paths
+    for tool in find-provides find-requires; do
+      sed -i $out/lib/rpm/$tool -e "s#/usr/lib/rpm/#$out/lib/rpm/#"
+    done
+
     # symlinks produced by build are incorrect
     ln -sf $out/bin/{rpm,rpmquery}
     ln -sf $out/bin/{rpm,rpmverify}