sway: use umlauts instead of compose key

install.conf.yaml

@@ -22,6 +22,7 @@
     - ~/.config/VSCodium/User
     - ~/.vim/pack/dotfiles
     - ~/.vim/colors
+    - ~/.xkb/symbols
 
 # casual
 - link:
@@ -69,6 +70,7 @@
     ~/.config/sway/workman: sway/workman
     ~/.config/swaylock/config: sway/lock
     ~/.config/environment.d/sway.conf: sway/env-vars
+    ~/.xkb/symbols/gb_umlauts: sway/xkb_gb_umlauts
     ~/.config/Code/User/settings.json: vscodium/settings.json
     ~/.config/VSCodium/User/settings.json: vscodium/settings.json
 

sway/config

@@ -12,8 +12,8 @@ set $term "foot"
 
 # keyboard layout
 input * {
-	xkb_layout "gb,de"
-	xkb_options "caps:escape,grp:win_space_toggle,compose:ralt"
+	xkb_layout "gb_umlauts,de"
+	xkb_options "caps:escape,grp:win_space_toggle"
 	xkb_numlock enabled
 }
 # hide cursor after 10 sec

sway/xkb_gb_umlauts

@@ -0,0 +1,15 @@
+default partial alphanumeric_keys
+xkb_symbols "basic" {
+  // define a base layout to inherit
+  include "gb"
+
+  // AltGr + a → ä / Ä
+  key <AC01> { [ a, A, adiaeresis, Adiaeresis ] };
+  // AltGr + o → ö / Ö
+  key <AD09> { [ o, O, odiaeresis, Odiaeresis ] };
+  // AltGr + u → ü / Ü
+  key <AD07> { [ u, U, udiaeresis, Udiaeresis ] };
+
+  // AltGr + e → €
+  key <AD03> { [ e, E, EuroSign, EuroSign ] };
+};