scripts/make-gpt.sh: use copy_file_range(2)

Before this change, a clean release/live "make -j4" had a median
runtime of 85 seconds.  Now, it's 37 seconds.  That much of a
reduction in iteration time is worth the extra complexity.

Signed-off-by: Alyssa Ross <hi@alyssa.is>

1 files changed, 9 insertions, 3 deletions

diff --git a/img/app/default.nix b/img/app/default.nix
index 70e6e33..538dfe2 100644
--- a/img/app/default.nix
+++ b/img/app/default.nix
@@ -1,8 +1,14 @@
 # SPDX-License-Identifier: MIT
-# SPDX-FileCopyrightText: 2021-2022 Alyssa Ross <hi@alyssa.is>
+# SPDX-FileCopyrightText: 2021-2023 Alyssa Ross <hi@alyssa.is>
 
 import ../../lib/eval-config.nix (
-{ config, src, terminfo ? config.pkgs.foot.terminfo, ... }:
+
+{ config, src
+, lseek ? import ../../tools/lseek { inherit config; }
+, terminfo ? config.pkgs.foot.terminfo
+, ...
+}:
+
 config.pkgs.pkgsStatic.callPackage (
 
 { lib, stdenvNoCC, runCommand, writeReferencesToFile, buildPackages
@@ -65,7 +71,7 @@ stdenvNoCC.mkDerivation {
   inherit src;
   sourceRoot = "source/img/app";
 
-  nativeBuildInputs = [ jq s6-rc tar2ext4 util-linux ];
+  nativeBuildInputs = [ jq lseek s6-rc tar2ext4 util-linux ];
 
   PACKAGES_TAR = packagesTar;
   VMLINUX = "${kernel.dev}/vmlinux";