In reply to @raitobezarius:matrix.org
lazy trees is exactly about removing that requirement

In reply to @weethet:catgirl.cloud

And it's not like it's that difficult to use, I've ran nix darwin using this script for a couple of months just fine

{ pkgs ? import <nixpkgs> { }
, writeShellScriptBin ? pkgs.writeScriptBin
, directory
, ...
}:
writeShellScriptBin "darwin-rebuild-npins" ''
  set -eo pipefail

  pushd ${directory} > /dev/null

  echo "building the system configuration..."
  system=$(nix-instantiate --eval --expr builtins.currentSystem | tr -d \")
  systemConfig=$(nix-build --pure-eval --no-out-link --argstr system $system --argstr name $(hostname) --expr "import (
    builtins.path {
      path = \"$(pwd)\";
      sha256 = \"$(nix-hash --type sha256 --base32 .)\";
    }
  )" | tee /dev/tty)

  profile=/nix/var/nix/profiles/system

  if [ "$USER" != root ] && [ ! -w $(dirname "$profile") ]; then
    sudo nix-env -p "$profile" --set "$systemConfig"
  else
    nix-env -p "$profile" --set "$systemConfig"
  fi

  "$systemConfig/activate-user"
  if [ "$USER" != root ]; then
    sudo "$systemConfig/activate"
  else
    "$systemConfig/activate"
  fi

  popd > /dev/null
''

In reply to @emilazy:matrix.org
there's also some talk that maybe some eval perf improvements only apply to flakes but not non-flakes pure eval, though I find that claim dubious without substantiation

In reply to @emilazy:matrix.org
there's also some talk that maybe some eval perf improvements only apply to flakes but not non-flakes pure eval, though I find that claim dubious without substantiation

In reply to @emilazy:matrix.org
WeetHet: btw, I suggest you use darwin-rebuild activate from the built system

In reply to @emilazy:matrix.org
WeetHet: btw, I suggest you use darwin-rebuild activate from the built system