I executed nix-collect-garbage first and tried to rebuild again, and noticed that now it use UnityHub.AppImage two times, nixos-rebuild even just hanged and i must to interrupt it.
I used nix-prefetch-url to check is AppImage downloadable and new hash is correct. After it tried again nixos-rebuild and still got this:
hash mismatch in fixed-output derivation '/nix/store/9cqma387r5qxzgb0yp449bkw6ffaiy0n-UnityHub.AppImage':
wanted: sha256:1rx7ih94ig3pd1yx1d3fpx7zpixq3j5birkpnzkh778qqsdrg0nf
got: sha256:05p5kqbwgqyk2aw2lix5dk1ql16aj6iczxrc63a1l0vj8wrha7z4
So it’s not overrided by overlay? I tryed to change url to some gibberish in it and noticed that it’s still trying to build both AppImages:
building '/nix/store/7c34fp147wjvzip81y9fg7qdxf3sspng-UnityHub.AppImageWAT.drv'...
building '/nix/store/gbfzpqwjqajh08z5kd8nkijwvv6wff62-UnityHub.AppImage.drv'...
trying https://public-cdn.cloud.unity3d.com/hub/prod/UnityHub.AppImage
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
trying https://public-cdn.cloud.unity3d.com/hub/prod/UnityHub.AppImageWAT
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
curl: (22) The requested URL returned error: 404 Not Found
error: cannot download UnityHub.AppImageWAT from any mirror
# Edit this configuration file to define what should be installed on
# your system. Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).
{ config, pkgs, ... }:
let
unstable = import (fetchTarball http://nixos.org/channels/nixos-unstable/nixexprs.tar.xz) {
overlays = [ (self: super: {
unityhub-fixed = super.unityhub.overrideAttrs (oldAttrs: rec {
src = super.fetchurl {
url = "https://public-cdn.cloud.unity3d.com/hub/prod/UnityHub.AppImage";
sha256 = "05p5kqbwgqyk2aw2lix5dk1ql16aj6iczxrc63a1l0vj8wrha7z4";
};
});
}) ];
config = {
allowUnfree = true;
};
};
in {
imports =
[ # Include the results of the hardware scan.
./hardware-configuration.nix
];
# Use the systemd-boot EFI boot loader.
boot.loader.systemd-boot.enable = true;
boot.loader.efi.canTouchEfiVariables = true;
boot.kernelPackages = pkgs.linuxPackages_latest;
services.xserver.videoDrivers = [ "amdgpu" ];
networking.hostName = "eklmv-nix"; # Define your hostname.
# networking.wireless.enable = true; # Enables wireless support via wpa_supplicant.
# The global useDHCP flag is deprecated, therefore explicitly set to false here.
# Per-interface useDHCP will be mandatory in the future, so this generated config
# replicates the default behaviour.
networking.useDHCP = false;
networking.interfaces.enp3s0.useDHCP = true;
networking.networkmanager.enable = true;
# Configure network proxy if necessary
# networking.proxy.default = "http://user:password@proxy:port/";
# networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
# Select internationalisation properties.
i18n = {
consoleFont = "Lat2-Terminus16";
consoleKeyMap = "us";
defaultLocale = "en_US.UTF-8";
};
# Set your time zone.
time.timeZone = "Europe/Moscow";
nixpkgs.config.allowUnfree = true;
virtualisation.virtualbox.host.enable = true;
virtualisation.virtualbox.host.enableExtensionPack = true;
users.extraGroups.vboxusers.members = [ "eklmv" ];
#List packages installed in system profile. To search, run:
# $ nix search wget
environment.systemPackages = with pkgs; [
wget
zip
unzip
unrar
p7zip
ark
vlc
git
vscode
unstable.unityhub-fixed
gimp
keepass
firefox
okular
steam
];
# Some programs need SUID wrappers, can be configured further or are
# started in user sessions.
# programs.mtr.enable = true;
# programs.gnupg.agent = { enable = true; enableSSHSupport = true; };
# List services that you want to enable:
# Enable the OpenSSH daemon.
# services.openssh.enable = true;
# Open ports in the firewall.
# networking.firewall.allowedTCPPorts = [ ... ];
# networking.firewall.allowedUDPPorts = [ ... ];
# Or disable the firewall altogether.
# networking.firewall.enable = false;
# Enable CUPS to print documents.
# services.printing.enable = true;
# Enable sound.
sound.enable = true;
hardware.pulseaudio.enable = true;
hardware.pulseaudio.support32Bit = true;
hardware.opengl.driSupport32Bit = true;
hardware.opengl.extraPackages = with pkgs; [ libva ];
# Enable the X11 windowing system.
services.xserver.enable = true;
services.xserver.layout = "us,ru";
services.xserver.xkbOptions = "grp:alt_shift_toggle";
# Enable touchpad support.
# services.xserver.libinput.enable = true;
# Enable the KDE Desktop Environment.
services.xserver.displayManager.sddm.enable = true;
services.xserver.desktopManager.plasma5.enable = true;
# Define a user account. Don't forget to set a password with ‘passwd’.
users.users.eklmv = {
isNormalUser = true;
extraGroups = [ "wheel" "networkmanager" ]; # Enable ‘sudo’ for the user.
};
# This value determines the NixOS release with which your system is to be
# compatible, in order to avoid breaking some software such as database
# servers. You should change this only after NixOS release notes say you
# should.
system.stateVersion = "19.09"; # Did you read the comment?
}
I can reproduce the issue without the overlay and just the overrideAttrs. Since UnityHub is an AppImage it uses appimageTools.wrapType2 which may be why there are two unityhub packages? I’m not sure how .overrideAttrs behaves with that, but here’s the source of appimageTools for the curious.
That said, you can kind of hack around it by abusing the fact that fetchurl is passed to the derivation, but again it is a hack so I wouldn’t let my mother see this:
