nixpkgs#emacs29-gtk3 with packages ends up with Operation not permitted in fixupPhase

[Rutherther]

When building emacs29-gtk3 with packages, I end up with few Operation not permitted on chmods. These are executed in the fixupPhase. I am on Alpine Linux. I've tried all nix, bwrap and proot as backends.

The command ran: nix-build -E 'with import <nixpkgs> {}; (pkgs.emacsPackagesFor pkgs.emacs29-gtk3).emacsWithPackages(p: [ p.vterm ])'. It builds fine on NixOS.

Workaround: use nixpkgs#emacs29