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feat(sway): theme the ReGreet greeter to match (Catppuccin Mocha)

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Factor the Catppuccin Mocha palette into lyrathorpe/catppuccin-mocha.nix
so the desktop (home/sway.nix) and the system greeter (swaywm.nix) share
one source of truth, then theme ReGreet from it: GTK CSS (libadwaita
named colours + plain node selectors for window/entry/button/combobox)
plus Noto Sans to match the bar and notifications.

Verified the rendered /etc/greetd/regreet.css and regreet.toml
(font_name = "Noto Sans 16"), and that foot still resolves its colours
through the shared import.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Emma Thorpe
2026-06-09 19:41:17 +01:00
parent 91e3ccb85b
commit ab48a14ec0
3 changed files with 92 additions and 25 deletions
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lyrathorpe/swaywm.nix
+62
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@@ -7,6 +7,8 @@
let
cfg = config.features.swayDesktop;
# Catppuccin Mocha (shared with the Sway desktop, see lyrathorpe/home/sway.nix).
ctp = import ./catppuccin-mocha.nix;
in
{
options = {
@@ -51,6 +53,66 @@ in
# services.displayManager.sessionPackages. Hosts that turn off
# features.swayDesktop (e.g. EDaaS) keep plain TTY login.
programs.regreet.enable = true;
# Theme the greeter to match the Sway desktop (Catppuccin Mocha). ReGreet is
# GTK; recolour via CSS (covering both libadwaita named colours and plain
# GTK node selectors) and use the same Noto Sans as the bar/notifications.
programs.regreet.font = {
name = "Noto Sans";
package = pkgs.noto-fonts;
size = 16;
};
programs.regreet.extraCss = ''
@define-color window_bg_color #${ctp.base};
@define-color window_fg_color #${ctp.text};
@define-color view_bg_color #${ctp.mantle};
@define-color view_fg_color #${ctp.text};
@define-color card_bg_color #${ctp.surface0};
@define-color card_fg_color #${ctp.text};
@define-color accent_bg_color #${ctp.blue};
@define-color accent_fg_color #${ctp.base};
@define-color accent_color #${ctp.blue};
@define-color destructive_bg_color #${ctp.red};
@define-color destructive_fg_color #${ctp.base};
@define-color error_color #${ctp.red};
@define-color warning_color #${ctp.peach};
@define-color success_color #${ctp.green};
window {
background-color: #${ctp.base};
color: #${ctp.text};
}
label {
color: #${ctp.text};
}
entry {
background-color: #${ctp.surface0};
color: #${ctp.text};
border: 1px solid #${ctp.surface1};
}
entry:focus-within {
border-color: #${ctp.blue};
}
button,
combobox button {
background-color: #${ctp.surface0};
color: #${ctp.text};
border: 1px solid #${ctp.surface1};
}
button:hover {
background-color: #${ctp.surface1};
}
button:active,
button:checked {
background-color: #${ctp.blue};
color: #${ctp.base};
}
'';
# cage reads the XKB_* environment at startup, so force the greeter onto the
# same Dvorak layout as the Sway session (home/sway.nix) -- otherwise the
# password field would be QWERTY. Dvorak is the "us" layout's variant, NOT a