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nixos/xserver: improve DM error message when X off

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Previously, if you, for example, set
services.xserver.displayManager.sddm.enable, but forgot to set
services.xserver.enable, you would get an error message that looked like
this:

    error: attribute 'display-manager' missing

Which was not particularly helpful.

Using assertions, we can make this message much better.
This commit is contained in:
Alyssa Ross 2019-05-02 16:19:59 +00:00
parent 753e1e0bab
commit 7658c90f21
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GPG key ID: F9DBED4859B271C0
2 changed files with 12 additions and 2 deletions
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5
nixos/modules/services/x11/display-managers/lightdm.nix
View file

@ -189,6 +189,11 @@ in
config = mkIf cfg.enable {
assertions = [
{ assertion = xcfg.enable;
message = ''
LightDM requires services.xserver.enable to be true
'';
}
{ assertion = cfg.autoLogin.enable -> cfg.autoLogin.user != null;
message = ''
LightDM auto-login requires services.xserver.displayManager.lightdm.autoLogin.user to be set

9
nixos/modules/services/x11/display-managers/sddm.nix
View file

@ -195,6 +195,11 @@ in
config = mkIf cfg.enable {
assertions = [
{ assertion = xcfg.enable;
message = ''
SDDM requires services.xserver.enable to be true
'';
}
{ assertion = cfg.autoLogin.enable -> cfg.autoLogin.user != null;
message = ''
SDDM auto-login requires services.xserver.displayManager.sddm.autoLogin.user to be set
@ -264,8 +269,8 @@ in
};
environment.etc."sddm.conf".source = cfgFile;
environment.pathsToLink = [
"/share/sddm"
environment.pathsToLink = [
"/share/sddm"
];
users.groups.sddm.gid = config.ids.gids.sddm;