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nixos/displayManager: make autoLogin options independent of DM type #85065

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merged 1 commit into from Jul 10, 2020
Merged

nixos/displayManager: make autoLogin options independent of DM type #85065

merged 1 commit into from Jul 10, 2020

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worldofpeace
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Co-authored-by: volth volth@volth.com

Motivation for this change

This code is originally from @volth and split out from #81652. @hedning @jtojnar I believe this is exactly what we talked about doing after the display-manager rewrite PR.

Not sure about changing session options yet #81652 (comment)

Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Ensured that relevant documentation is up to date
  • Fits CONTRIBUTING.md.

@worldofpeace
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Will add 20.09 notes.

@hedning
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hedning commented Apr 12, 2020

Not sure about changing session options yet #81652 (comment)?

Right, I guess it depends somewhat on the semantics of defaultSession. We currently have this:

      Graphical session to pre-select in the session chooser (only effective for GDM and LightDM).

      On GDM, LightDM and SDDM, it will also be used as a session for auto-login.

I think having the session bundled with the autoLogin makes the most sense UI wise. So one option would be to just add a autoLogin.session and make it take priority here:
https://github.com/hedning/nixpkgs/blob/40197cd67c41a8ec6714004dd45db11521d2cb18/nixos/modules/services/x11/display-managers/default.nix#L258-L264

We could then make defaultSession either just do «Graphical session to pre-select in the session chooser (only effective for GDM and LightDM)», or leave it alone. Neither option is super, since the pre-selection thing only works in GDM and LightDM, and the auto-login stuff would be sorta superfluous.

@worldofpeace worldofpeace force-pushed the autologin-unified branch 2 times, most recently from fd2b087 to 3deb31e Compare April 25, 2020 02:08
@worldofpeace
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Ok, I've updated the manual (before it didn't build) and added a release note.
As a result of needing to fix the manual, I had to change autoLogin to a submodule.

@worldofpeace
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@GrahamcOfBorg test sddm

@worldofpeace
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Rebased.

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@GrahamcOfBorg test gnome3

@worldofpeace worldofpeace merged commit 747fb48 into NixOS:master Jul 10, 2020
@worldofpeace worldofpeace deleted the autologin-unified branch July 10, 2020 04:04
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This pull request has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/autologin-appears-in-manual-but-does-not-work/11301/2

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6.topic: GNOME GNOME desktop environment and its underlying platform 6.topic: nixos 6.topic: qt/kde 6.topic: xfce The Xfce Desktop Environment 8.has: changelog 8.has: documentation 8.has: module (update) 10.rebuild-darwin: 0 10.rebuild-linux: 1-10 10.rebuild-linux: 1
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