nixpkgs/nixos/modules/services/x11/display-managers/gdm.nix

169 lines
5.9 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.xserver.displayManager;
gnome3 = config.environment.gnome3.packageSet;
gdm = gnome3.gdm;
in
{
###### interface
options = {
services.xserver.displayManager.gdm = {
enable = mkOption {
type = types.bool;
default = false;
example = true;
description = ''
Whether to enable GDM as the display manager.
<emphasis>GDM is very experimental and may render system unusable.</emphasis>
'';
};
};
};
###### implementation
config = mkIf cfg.gdm.enable {
services.xserver.displayManager.slim.enable = false;
users.extraUsers.gdm =
{ name = "gdm";
uid = config.ids.uids.gdm;
group = "gdm";
home = "/run/gdm";
description = "GDM user";
};
users.extraGroups.gdm.gid = config.ids.gids.gdm;
services.xserver.displayManager.job =
{
environment = {
GDM_X_SERVER = "${cfg.xserverBin} ${cfg.xserverArgs}";
GDM_SESSIONS_DIR = "${cfg.session.desktops}";
XDG_CONFIG_DIRS = "${gnome3.gnome_settings_daemon}/etc/xdg";
# Find the mouse
XCURSOR_PATH = "~/.icons:${config.system.path}/share/icons";
};
execCmd = "exec ${gdm}/sbin/gdm";
};
# Because sd_login_monitor_new requires /run/systemd/machines
systemd.services.display-manager.wants = [ "systemd-machined.service" ];
systemd.services.display-manager.after = [ "systemd-machined.service" ];
systemd.services.display-manager.path = [ gnome3.gnome_shell gnome3.caribou ];
services.dbus.packages = [ gdm ];
programs.dconf.profiles.gdm = "${gdm}/share/dconf/profile/gdm";
# GDM LFS PAM modules, adapted somehow to NixOS
security.pam.services = {
gdm-launch-environment.text = ''
auth required pam_succeed_if.so audit quiet_success user = gdm
auth optional pam_permit.so
account required pam_succeed_if.so audit quiet_success user = gdm
account sufficient pam_unix.so
password required pam_deny.so
session required pam_succeed_if.so audit quiet_success user = gdm
session required pam_env.so envfile=${config.system.build.pamEnvironment}
session optional ${pkgs.systemd}/lib/security/pam_systemd.so
session optional pam_keyinit.so force revoke
session optional pam_permit.so
'';
gdm.text = ''
auth requisite pam_nologin.so
auth required pam_env.so
auth required pam_succeed_if.so uid >= 1000 quiet
auth optional ${gnome3.gnome_keyring}/lib/security/pam_gnome_keyring.so
auth ${if config.security.pam.enableEcryptfs then "required" else "sufficient"} pam_unix.so nullok likeauth
${optionalString config.security.pam.enableEcryptfs
"auth required ${pkgs.ecryptfs}/lib/security/pam_ecryptfs.so unwrap"}
${optionalString (! config.security.pam.enableEcryptfs)
"auth required pam_deny.so"}
account sufficient pam_unix.so
password requisite pam_unix.so nullok sha512
${optionalString config.security.pam.enableEcryptfs
"password optional ${pkgs.ecryptfs}/lib/security/pam_ecryptfs.so"}
session required pam_env.so envfile=${config.system.build.pamEnvironment}
session required pam_unix.so
${optionalString config.security.pam.enableEcryptfs
"session optional ${pkgs.ecryptfs}/lib/security/pam_ecryptfs.so"}
session required pam_loginuid.so
session optional ${pkgs.systemd}/lib/security/pam_systemd.so
session optional ${gnome3.gnome_keyring}/lib/security/pam_gnome_keyring.so auto_start
'';
gdm-password.text = ''
auth requisite pam_nologin.so
auth required pam_env.so envfile=${config.system.build.pamEnvironment}
auth required pam_succeed_if.so uid >= 1000 quiet
auth optional ${gnome3.gnome_keyring}/lib/security/pam_gnome_keyring.so
auth ${if config.security.pam.enableEcryptfs then "required" else "sufficient"} pam_unix.so nullok likeauth
${optionalString config.security.pam.enableEcryptfs
"auth required ${pkgs.ecryptfs}/lib/security/pam_ecryptfs.so unwrap"}
${optionalString (! config.security.pam.enableEcryptfs)
"auth required pam_deny.so"}
account sufficient pam_unix.so
password requisite pam_unix.so nullok sha512
${optionalString config.security.pam.enableEcryptfs
"password optional ${pkgs.ecryptfs}/lib/security/pam_ecryptfs.so"}
session required pam_env.so envfile=${config.system.build.pamEnvironment}
session required pam_unix.so
${optionalString config.security.pam.enableEcryptfs
"session optional ${pkgs.ecryptfs}/lib/security/pam_ecryptfs.so"}
session required pam_loginuid.so
session optional ${pkgs.systemd}/lib/security/pam_systemd.so
session optional ${gnome3.gnome_keyring}/lib/security/pam_gnome_keyring.so auto_start
'';
gdm-autologin.text = ''
auth requisite pam_nologin.so
auth required pam_succeed_if.so uid >= 1000 quiet
auth required pam_permit.so
account sufficient pam_unix.so
password requisite pam_unix.so nullok sha512
session optional pam_keyinit.so revoke
session required pam_env.so envfile=${config.system.build.pamEnvironment}
session required pam_unix.so
session required pam_loginuid.so
session optional ${pkgs.systemd}/lib/security/pam_systemd.so
'';
};
};
}