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Add wallpaper-based color theming with matugen

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- Matugen templates for Ghostty theme and GTK4 colors
- Ghostty uses generated wallpaper theme instead of Catppuccin
- GTK4 CSS imports generated color overrides
- Update alias runs matugen after switch to regenerate colors
- Add wallpaper fish function to change wallpaper + regen colors

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
ediblerope 2026-04-13 19:56:38 +01:00
parent 7a6ee02360
commit effa5e5cbb
6 changed files with 73 additions and 3 deletions
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2
common.nix
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@ -74,7 +74,7 @@
# Shell aliases (work in both bash and fish)
environment.shellAliases = {
update = "bash -c 'OLD_SYSTEM=$(readlink /run/current-system) && sudo nixos-rebuild build $@ --flake github:ediblerope/nixos-config && sudo nixos-rebuild switch $@ --flake github:ediblerope/nixos-config && nvd diff $OLD_SYSTEM /run/current-system' --";
update = "bash -c 'OLD_SYSTEM=$(readlink /run/current-system) && sudo nixos-rebuild build $@ --flake github:ediblerope/nixos-config && sudo nixos-rebuild switch $@ --flake github:ediblerope/nixos-config && nvd diff $OLD_SYSTEM /run/current-system && matugen image ~/.local/share/backgrounds/wallpaper.png --source-color-index 0 -m dark' --";
clean = "sudo nix-collect-garbage -d";
ll = "ls -alh";
clear = "command clear";

19
home-manager/fred.nix
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@ -1,5 +1,5 @@
# settings/fred.nix
{ config, pkgs, lib, ... }:
{ config, pkgs, lib, inputs, ... }:
{
# Define the state version for Home Manager
home.stateVersion = "25.11";
@ -20,7 +20,7 @@
font-family = FiraMono Nerd Font
font-size = 11
font-thicken = true
theme = dark:Catppuccin Mocha,light:Catppuccin Latte
theme = wallpaper
window-padding-x = 10
window-padding-y = 10
window-padding-balance = true
@ -31,4 +31,19 @@
cursor-style-blink = true
'';
# Matugen config — templates for wallpaper-based color generation
home.file.".config/matugen/config.toml".text = ''
[config]
reload_apps = true
reload_apps_list = { ghostty = "" }
[templates.ghostty]
input_path = "${inputs.self}/templates/ghostty-colors"
output_path = "~/.config/ghostty/themes/wallpaper"
[templates.gtk4]
input_path = "${inputs.self}/templates/gtk4-colors.css"
output_path = "~/.config/gtk-4.0/colors.css"
'';
}

1
settings/gnome.nix
View file

@ -67,6 +67,7 @@
# Minimal titlebars — hide window buttons and shrink headerbar
home.file.".config/gtk-4.0/gtk.css".force = true;
home.file.".config/gtk-4.0/gtk.css".text = ''
@import url("colors.css");
headerbar {
min-height: 0;
padding: 0;

18
settings/shell.nix
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@ -127,5 +127,23 @@
end
function fish_right_prompt; end
# Set wallpaper and regenerate color theme
function wallpaper
if test (count $argv) -ne 1
echo "Usage: wallpaper <path-to-image>"
return 1
end
set -l img (realpath "$argv[1]")
if not test -f "$img"
echo "File not found: $img"
return 1
end
cp "$img" ~/.local/share/backgrounds/wallpaper.png
gsettings set org.gnome.desktop.background picture-uri "file://$HOME/.local/share/backgrounds/wallpaper.png"
gsettings set org.gnome.desktop.background picture-uri-dark "file://$HOME/.local/share/backgrounds/wallpaper.png"
matugen image "$img" --source-color-index 0 -m dark
echo "Wallpaper and colors updated!"
end
'';
}

21
templates/ghostty-colors Normal file
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@ -0,0 +1,21 @@
palette = 0={{colors.base16.base00.default.color}}
palette = 1={{colors.base16.base08.default.color}}
palette = 2={{colors.base16.base0b.default.color}}
palette = 3={{colors.base16.base0a.default.color}}
palette = 4={{colors.base16.base0d.default.color}}
palette = 5={{colors.base16.base0e.default.color}}
palette = 6={{colors.base16.base0c.default.color}}
palette = 7={{colors.base16.base05.default.color}}
palette = 8={{colors.base16.base03.default.color}}
palette = 9={{colors.base16.base08.default.color}}
palette = 10={{colors.base16.base0b.default.color}}
palette = 11={{colors.base16.base0a.default.color}}
palette = 12={{colors.base16.base0d.default.color}}
palette = 13={{colors.base16.base0e.default.color}}
palette = 14={{colors.base16.base0c.default.color}}
palette = 15={{colors.base16.base07.default.color}}
background = {{colors.primary.surface.default.color}}
foreground = {{colors.primary.on_surface.default.color}}
cursor-color = {{colors.primary.primary.default.color}}
selection-background = {{colors.primary.primary_container.default.color}}
selection-foreground = {{colors.primary.on_primary_container.default.color}}

15
templates/gtk4-colors.css Normal file
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@ -0,0 +1,15 @@
@define-color accent_color {{colors.primary.primary.default.color}};
@define-color accent_bg_color {{colors.primary.primary_container.default.color}};
@define-color accent_fg_color {{colors.primary.on_primary_container.default.color}};
@define-color window_bg_color {{colors.primary.surface.default.color}};
@define-color window_fg_color {{colors.primary.on_surface.default.color}};
@define-color view_bg_color {{colors.primary.surface_container_low.default.color}};
@define-color view_fg_color {{colors.primary.on_surface.default.color}};
@define-color headerbar_bg_color {{colors.primary.surface_container.default.color}};
@define-color headerbar_fg_color {{colors.primary.on_surface.default.color}};
@define-color card_bg_color {{colors.primary.surface_container_high.default.color}};
@define-color card_fg_color {{colors.primary.on_surface.default.color}};
@define-color sidebar_bg_color {{colors.primary.surface_container.default.color}};
@define-color sidebar_fg_color {{colors.primary.on_surface.default.color}};
@define-color popover_bg_color {{colors.primary.surface_container.default.color}};
@define-color popover_fg_color {{colors.primary.on_surface.default.color}};