I tried to upgrade my system and converted my NixOS configuration to a flake. Now I ended up with a broken configuration and no path back because I didn’t keep my /etc/nixos in git (… 
yes, I know what you’re thinking). When I try to start sway from the cli I get the following error:
00:00:00.052 [ERROR] [wlr] [render/egl.c:204] EGL_EXT_platform_base not supported
00:00:00.052 [ERROR] [wlr] [render/egl.c:506] Failed to create EGL context
00:00:00.052 [ERROR] [wlr] [render/gles2/renderer.c:679] Could not initialize EGL
00:00:00.052 [ERROR] [wlr] [render/wlr_renderer.c:333] Could not initialize renderer
00:00:00.052 [ERROR] [sway/server.c:79] Failed to create renderer
I can’t share my full nixos configuration since I haven’t implemented proper secrets management. But these should be the relevant parts:
flake.nix
{
description = "NixOS configuration";
inputs = {
nixpkgs.url = "nixpkgs/nixos-23.05";
home-manager = {
url = "github:nix-community/home-manager/release-23.05";
inputs.nixpkgs.follows = "nixpkgs";
};
sops-nix.url = "github:Mic92/sops-nix";
};
outputs = inputs @ { self, nixpkgs, home-manager, sops-nix }:
let system = "x86_64-linux"; in {
nixosConfigurations = {
beni-machine = nixpkgs.lib.nixosSystem {
inherit system;
specialArgs = { inherit inputs; };
modules = [
./hardware-configuration.nix
./configuration.nix
sops-nix.nixosModules.sops
home-manager.nixosModules.home-manager
{
nix.registry.nixpkgs.flake = nixpkgs;
home-manager = {
useGlobalPkgs = true;
useUserPackages = true;
backupFileExtension = "home-manager-backup";
users.beni = import ./home.nix;
};
}
];
};
};
};
}
configuration.nix
{ config, pkgs, ... }:
{
imports =
[ # Include the results of the hardware scan.
./hardware-configuration.nix
./networking.nix
./vim.nix
./python.nix
./beni.nix
./tmux.nix
./podman.nix
./texlive.nix
./power.nix
./syncthing.nix
];
nix.settings.experimental-features = [ "nix-command" "flakes" ];
boot.loader.systemd-boot.enable = true;
boot.loader.efi = {
canTouchEfiVariables = true;
efiSysMountPoint = "/boot/efi";
};
time.timeZone = "Europe/Zurich";
i18n.defaultLocale = "en_US.UTF-8";
i18n.extraLocaleSettings = {
LC_TIME = "de_CH.UTF-8";
};
services.xserver.layout = "eu";
services.printing.enable = true;
security.sudo.wheelNeedsPassword = false;
sound.enable = true;
hardware.pulseaudio.enable = false;
security.rtkit.enable = true;
services.pipewire = {
enable = true;
alsa.enable = true;
alsa.support32Bit = true;
pulse.enable = true;
};
services.xserver.libinput = {
enable = true;
touchpad = {
middleEmulation = true;
tapping = true;
};
};
environment.systemPackages = with pkgs; [
git
wget
htop
pstree
netcat
file
unzip
jq
dig
sl
cowsay
];
programs.light.enable = true;
security.polkit.enable = true;
users.users.beni.extraGroups = [ "video" ];
system.stateVersion = "22.11"; # Did you read the comment?
}
hardware-configuration.nix
{ config, lib, pkgs, modulesPath, ... }:
{
imports =
[ (modulesPath + "/installer/scan/not-detected.nix")
];
boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "sd_mod" ];
boot.initrd.kernelModules = [ ];
boot.kernelModules = [ "kvm-intel" ];
boot.extraModulePackages = [ ];
fileSystems."/" =
{ device = "/dev/disk/by-uuid/67e510be-4fa1-4ee1-89c5-64354e7e89b8";
fsType = "ext4";
};
boot.initrd.luks.devices =
{ "luks-687c86b3-ce38-44b5-b992-571b6d79d0ee".device = "/dev/disk/by-uuid/687c86b3-ce38-44b5-b992-571b6d79d0ee";
"luks-d499588e-b7a7-4e2b-a4f7-5f92574e5606".device = "/dev/disk/by-uuid/d499588e-b7a7-4e2b-a4f7-5f92574e5606";
};
fileSystems."/boot/efi" =
{ device = "/dev/disk/by-uuid/4CB3-5B6F";
fsType = "vfat";
};
swapDevices =
[ { device = "/dev/disk/by-uuid/121b1eab-6132-4c6b-857f-660e12e8d4c6"; }
];
networking.useDHCP = lib.mkDefault true;
nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
}
sway.nix
{ config, pkgs, lib, ... }:
let
dbus-sway-environment = pkgs.writeTextFile {
name = "dbus-sway-environment";
destination = "/bin/dbus-sway-environment";
executable = true;
text = ''
dbus-update-activation-environment --systemd WAYLAND_DISPLAY XDG_CURRENT_DESKTOP=sway
systemctl --user stop pipewire pipewire-media-session xdg-desktop-portal xdg-desktop-portal-wlr
systemctl --user start pipewire pipewire-media-session xdg-desktop-portal xdg-desktop-portal-wlr
'';
};
configure-gtk = pkgs.writeTextFile {
name = "configure-gtk";
destination = "/bin/configure-gtk";
executable = true;
text = let
schema = pkgs.gsettings-desktop-schemas;
datadir = "${schema}/share/gsettings-schemas/${schema.name}";
in ''
export XDG_DATA_DIRS=${datadir}:$XDG_DATA_DIRS
gnome_schema=org.gnome.desktop.interface
gsettings set $gnome_schema gtk-theme 'Dracula'
'';
};
in
{
environment.systemPackages = with pkgs; [
alacritty # gpu accelerated terminal
foot
sway
dbus-sway-environment
configure-gtk
wayland
xdg-utils # for opening default programs when clicking links
glib # gsettings
dracula-theme # gtk theme
gnome3.adwaita-icon-theme # default gnome cursors
swaylock
swayidle
grim # screenshot functionality
slurp # screenshot functionality
wl-clipboard # wl-copy and wl-paste for copy/paste from stdin / stdout
bemenu # wayland clone of dmenu
mako # notification system developed by swaywm maintainer
lm_sensors # Battery percentage
pamixer # For the volume keys
];
security.polkit.enable = true;
services.pipewire = {
enable = true;
alsa.enable = true;
pulse.enable = true;
};
services.dbus.enable = true;
xdg.portal = {
enable = true;
wlr.enable = true;
extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
};
programs.sway = {
enable = true;
wrapperFeatures.gtk = true;
};
programs.light.enable = true;
}
I don’t even know where to start to debug this. Any tips or hints?
Thank you
–beni