I’m exploring flakes and trying to install home-manager. I am following @ryan4yin’s excellent guide closely on his website. I am stuck at this passage here. While I have copied over most of the sample code verbatim, I made some changes and was mindful to substitute my hostname and username in the appropriate places. When I first ran the rebuild switch command, I encountered some errors, like one involving a duplicate parentheses. I fixed that. But now I am getting an error that I don’t understand. Here is the error in full:
Broken build output
$ sudo nixos-rebuild switch
[sudo] password for evangelist:
building the system configuration...
error:
… while calling the 'head' builtin
at /nix/store/b8l3ndracmly9kyylawrnk32lsrjfy3j-source/lib/attrsets.nix:1574:11:
1573| || pred here (elemAt values 1) (head values) then
1574| head values
| ^
1575| else
… while evaluating the attribute 'value'
at /nix/store/b8l3ndracmly9kyylawrnk32lsrjfy3j-source/lib/modules.nix:816:9:
815| in warnDeprecation opt //
816| { value = addErrorContext "while evaluating the option `${showOption loc}':" value;
| ^
817| inherit (res.defsFinal') highestPrio;
… while evaluating the option `system.build.toplevel':
… while evaluating definitions from `/nix/store/b8l3ndracmly9kyylawrnk32lsrjfy3j-source/nixos/modules/system/activation/top-level.nix':
… while evaluating the option `system.systemBuilderArgs':
… while evaluating definitions from `/nix/store/b8l3ndracmly9kyylawrnk32lsrjfy3j-source/nixos/modules/system/activation/activatable-system.nix':
… while evaluating the option `system.activationScripts.etc.text':
… while evaluating definitions from `/nix/store/b8l3ndracmly9kyylawrnk32lsrjfy3j-source/nixos/modules/system/etc/etc-activation.nix':
… while evaluating definitions from `/nix/store/b8l3ndracmly9kyylawrnk32lsrjfy3j-source/nixos/modules/system/etc/etc.nix':
… while evaluating the option `environment.etc.dbus-1.source':
… while evaluating the option `environment.systemPackages':
… while evaluating definitions from `/nix/store/8fz1r15nggmbaflr6v3wrdkf3h10zqpp-source/configuration.nix':
… while evaluating the module argument `inputs' in "/nix/store/8fz1r15nggmbaflr6v3wrdkf3h10zqpp-source/configuration.nix":
(stack trace truncated; use '--show-trace' to show the full, detailed trace)
error: attribute 'inputs' missing
at /nix/store/b8l3ndracmly9kyylawrnk32lsrjfy3j-source/lib/modules.nix:515:28:
514| addErrorContext (context name)
515| (args.${name} or config._module.args.${name})
| ^
516| ) (functionArgs f);
What can you people make of that? What is it refering to?
Here are the relevant files I am workin with:
/etc/nixos/configuration.nix
# 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, lib, inputs, ... }:
{
imports =
[ # Include the results of the hardware scan.
./hardware-configuration.nix
];
nixpkgs.config.allowUnfree = true;
# Bootloader
boot.loader.systemd-boot.enable = true;
boot.loader.efi.canTouchEfiVariables = true;
networking.hostName = "nixoslaptop"; # Define your hostname.
# networking.wireless.enable = true; # Enables wireless support via wpa_supplicant.
# Configure network proxy if necessary
# networking.proxy.default = "http://user:password@proxy:port/";
# networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
# Enable networking
networking.networkmanager.enable = true;
# Set your time zone.
time.timeZone = "America/New_York";
# Select internationalisation properties.
i18n.defaultLocale = "en_US.UTF-8";
i18n.extraLocaleSettings = {
LC_ADDRESS = "en_US.UTF-8";
LC_IDENTIFICATION = "en_US.UTF-8";
LC_MEASUREMENT = "en_US.UTF-8";
LC_MONETARY = "en_US.UTF-8";
LC_NAME = "en_US.UTF-8";
LC_NUMERIC = "en_US.UTF-8";
LC_PAPER = "en_US.UTF-8";
LC_TELEPHONE = "en_US.UTF-8";
LC_TIME = "en_US.UTF-8";
};
# Enable the X11 windowing system.
services.xserver.enable = true;
# Enable the GNOME Desktop Environment.
services.xserver.displayManager.gdm.enable = true;
services.xserver.desktopManager.gnome.enable = true;
# Configure keymap in X11
services.xserver.xkb = {
layout = "us";
variant = "";
};
# Enable CUPS to print documents.
services.printing.enable = true;
# Enable sound with pipewire.
hardware.pulseaudio.enable = false;
security.rtkit.enable = true;
services.pipewire = {
enable = true;
alsa.enable = true;
alsa.support32Bit = true;
pulse.enable = true;
# If you want to use JACK applications, uncomment this
#jack.enable = true;
# use the example session manager (no others are packaged yet so this is enabled by default,
# no need to redefine it in your config for now)
#media-session.enable = true;
};
# Enable touchpad support (enabled default in most desktopManager).
# services.xserver.libinput.enable = true;
# Define a user account. Don't forget to set a password with ‘passwd’.
users.users.evangelist = {
isNormalUser = true;
description = "Paul";
extraGroups = [ "networkmanager" "wheel" ];
packages = with pkgs; [
# thunderbird
];
};
programs.zsh.enable = true;
users.defaultUserShell = pkgs.zsh;
# Install firefox.
programs.firefox.enable = true;
programs.sway.enable = true;
programs.waybar.enable = true;
nix.settings.experimental-features = [ "nix-command" "flakes" ];
# List packages installed in system profile. To search, run:
# $ nix search wget
environment.systemPackages = with pkgs; [
vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
neovim
wl-clipboard
# wayclip
# waypaste # Unnecessary, included in wayclip
xclip
neovim-gtk
wget
google-chrome
gotop
foot
radeontop
git
nerdfonts
gnome-terminal
# locate
python3
curl
vscode
fastfetch
signal-desktop
openssh
gedit
# alacritty
starship
element-desktop
gotop
irssi
sway
oh-my-posh
libgcc
libgccjit
binutils
musl
gcc
btop
#inputs.helix.packages."${pkgs.system}".helix # in flake
inputs.helix.packages."${pkgs.system}".helix
];
# 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;
# This value determines the NixOS release from which the default
# settings for stateful data, like file locations and database versions
# on your system were taken. It‘s perfectly fine and recommended to leave
# this value at the release version of the first install of this system.
# Before changing this value read the documentation for this option
# (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
system.stateVersion = "24.11"; # Did you read the comment?
}
/etc/nixos/flake.nix
{
description = "A simple NixOS flake";
inputs = {
# NixOS official package source, using the nixos-24.11 branch here
nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
# helix editor, use the master branch
helix.url = "github:helix-editor/helix/master";
home-manager = {
url = "github:nix-community/home-manager/release-24.11";
# The `follows` keyword in inputs is used for inheritance.
# Here, `inputs.nixpkgs` of home-manager is kept consistent with
# the `inputs.nixpkgs` of the current flake,
# to avoid problems caused by different versions of nixpkgs.
inputs.nixpkgs.follows = "nixpkgs";
};
};
outputs = inputs@{ nixpkgs, home-manager, ... }: {
nixosConfigurations = {
# TODO please change the hostname to your own
nixoslaptop = nixpkgs.lib.nixosSystem {
system = "x86_64-linux";
modules = [
./configuration.nix
# make home-manager as a module of nixos
# so that home-manager configuration will be deployed automatically when executing `nixos-rebuild switch`
home-manager.nixosModules.home-manager
{
home-manager.useGlobalPkgs = true;
home-manager.useUserPackages = true;
# TODO replace ryan with your own username
home-manager.users.evangelist = import ./home.nix;
# Optionally, use home-manager.extraSpecialArgs to pass arguments to home.nix
}
];
};
};
};
}
/etc/nixos/home.nix
{ config, pkgs, ... }:
{
# TODO please change the username & home directory to your own
home.username = "evangelist";
home.homeDirectory = "/home/evangelist";
# link the configuration file in current directory to the specified location in home directory
# home.file.".config/i3/wallpaper.jpg".source = ./wallpaper.jpg;
# link all files in `./scripts` to `~/.config/i3/scripts`
# home.file.".config/i3/scripts" = {
# source = ./scripts;
# recursive = true; # link recursively
# executable = true; # make all files executable
# };
# encode the file content in nix configuration file directly
# home.file.".xxx".text = ''
# xxx
# '';
# set cursor size and dpi for 4k monitor
xresources.properties = {
"Xcursor.size" = 16;
"Xft.dpi" = 172;
};
# Packages that should be installed to the user profile.
home.packages = with pkgs; [
# here is some command line tools I use frequently
# feel free to add your own or remove some of them
neofetch
nnn # terminal file manager
# archives
zip
xz
unzip
p7zip
# utils
ripgrep # recursively searches directories for a regex pattern
jq # A lightweight and flexible command-line JSON processor
yq-go # yaml processor https://github.com/mikefarah/yq
eza # A modern replacement for ‘ls’
fzf # A command-line fuzzy finder
# networking tools
mtr # A network diagnostic tool
iperf3
dnsutils # `dig` + `nslookup`
ldns # replacement of `dig`, it provide the command `drill`
aria2 # A lightweight multi-protocol & multi-source command-line download utility
socat # replacement of openbsd-netcat
nmap # A utility for network discovery and security auditing
ipcalc # it is a calculator for the IPv4/v6 addresses
# misc
cowsay
file
which
tree
gnused
gnutar
gawk
zstd
gnupg
# nix related
#
# it provides the command `nom` works just like `nix`
# with more details log output
nix-output-monitor
# productivity
hugo # static site generator
glow # markdown previewer in terminal
btop # replacement of htop/nmon
iotop # io monitoring
iftop # network monitoring
# system call monitoring
strace # system call monitoring
ltrace # library call monitoring
lsof # list open files
# system tools
sysstat
lm_sensors # for `sensors` command
ethtool
pciutils # lspci
usbutils # lsusb
];
# basic configuration of git, please change to your own
programs.git = {
enable = true;
userName = "Bob Wilcock";
userEmail = "drone4four@gmail.com";
};
# starship - an customizable prompt for any shell
# programs.starship = {
# enable = true;
# custom settings
# settings = {
# add_newline = false;
# aws.disabled = true;
# gcloud.disabled = true;
# line_break.disabled = true;
# };
# };
# alacritty - a cross-platform, GPU-accelerated terminal emulator
programs.alacritty = {
enable = true;
# custom settings
settings = {
env.TERM = "xterm-256color";
font = {
size = 12;
draw_bold_text_with_bright_colors = true;
};
scrolling.multiplier = 5;
selection.save_to_clipboard = true;
};
};
#programs.bash = {
# enable = true;
# enableCompletion = true;
# # TODO add your custom bashrc here
# bashrcExtra = ''
# export PATH="$PATH:$HOME/bin:$HOME/.local/bin:$HOME/go/bin"
# '';
#
# set some aliases, feel free to add more or remove some
# shellAliases = {
# k = "kubectl";
# urldecode = "python3 -c 'import sys, urllib.parse as ul; print(ul.unquote_plus(sys.stdin.read()))'";
# urlencode = "python3 -c 'import sys, urllib.parse as ul; print(ul.quote_plus(sys.stdin.read()))'";
# };
# };
# This value determines the home Manager release that your
# configuration is compatible with. This helps avoid breakage
# when a new home Manager release introduces backwards
# incompatible changes.
#
# You can update home Manager without changing this value. See
# the home Manager release notes for a list of state version
# changes in each release.
home.stateVersion = "24.11";
# Let home Manager install and manage itself.
programs.home-manager.enable = true;
}
edit: grammar