From 31ea32fa1465568e95ea1288ea1dd02689c77c5e Mon Sep 17 00:00:00 2001
From: octvs <octvs@posteo.de>
Date: Tue, 24 Feb 2026 19:03:46 +0100
Subject: [PATCH] i3-sway: allow inverse_outer on smart_gaps

Change the boolean `smartGaps` option to an `enum` that expects common
values of i3 and sway ("on" "off" "inverse_outer").
---
 .../misc/news/2026/02/2026-02-24_19-17-29.nix |  9 +++++++++
 .../window-managers/i3-sway/lib/functions.nix |  2 +-
 .../window-managers/i3-sway/lib/options.nix   | 20 ++++++++++++++++---
 3 files changed, 27 insertions(+), 4 deletions(-)
 create mode 100644 modules/misc/news/2026/02/2026-02-24_19-17-29.nix

diff --git a/modules/misc/news/2026/02/2026-02-24_19-17-29.nix b/modules/misc/news/2026/02/2026-02-24_19-17-29.nix
new file mode 100644
index 00000000..f2054991
--- /dev/null
+++ b/modules/misc/news/2026/02/2026-02-24_19-17-29.nix
@@ -0,0 +1,9 @@
+{
+  time = "2026-02-24T18:17:29+00:00";
+  condition = true;
+  message = ''
+    The options 'xsession.windowManager.i3.config.gaps.smartGaps' and
+    'wayland.windowManager.sway.config.gaps.smartGaps' now expects either "on",
+    "off" (default) or "inverse_outer".
+  '';
+}
diff --git a/modules/services/window-managers/i3-sway/lib/functions.nix b/modules/services/window-managers/i3-sway/lib/functions.nix
index 2b8ecd7e..14880c4c 100644
--- a/modules/services/window-managers/i3-sway/lib/functions.nix
+++ b/modules/services/window-managers/i3-sway/lib/functions.nix
@@ -189,7 +189,7 @@ rec {
           (optionalString (bottom != null) "gaps bottom ${toString bottom}")
           (optionalString (left != null) "gaps left ${toString left}")
           (optionalString (right != null) "gaps right ${toString right}")
-          (optionalString smartGaps "smart_gaps on")
+          (optionalString (smartGaps != "off") "smart_gaps ${smartGaps}")
           (optionalString (smartBorders != "off") "smart_borders ${smartBorders}")
         ]
     );
diff --git a/modules/services/window-managers/i3-sway/lib/options.nix b/modules/services/window-managers/i3-sway/lib/options.nix
index ce770c3c..ae69adfe 100644
--- a/modules/services/window-managers/i3-sway/lib/options.nix
+++ b/modules/services/window-managers/i3-sway/lib/options.nix
@@ -932,13 +932,27 @@ in
           };
 
           smartGaps = mkOption {
-            type = types.bool;
-            default = false;
+            type = types.either types.bool (
+              types.enum [
+                "on"
+                "off"
+                "inverse_outer"
+              ]
+            );
+            apply =
+              value:
+              if value == true then
+                "on"
+              else if value == false then
+                "off"
+              else
+                value;
+            default = "off";
             description = ''
               This option controls whether to disable all gaps (outer and inner)
               on workspace with a single container.
             '';
-            example = true;
+            example = "on";
           };
 
           smartBorders = mkOption {