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-rw-r--r--nixos/modules/services/x11/xserver.nix3
1 files changed, 3 insertions, 0 deletions
diff --git a/nixos/modules/services/x11/xserver.nix b/nixos/modules/services/x11/xserver.nix
index ad9bd88f98a..ee190ac3cc4 100644
--- a/nixos/modules/services/x11/xserver.nix
+++ b/nixos/modules/services/x11/xserver.nix
@@ -738,6 +738,9 @@ in
       nativeBuildInputs = with pkgs.buildPackages; [ xkbvalidate ];
       preferLocalBuild = true;
     } ''
+      ${optionalString (config.environment.sessionVariables ? XKB_CONFIG_ROOT)
+        "export XKB_CONFIG_ROOT=${config.environment.sessionVariables.XKB_CONFIG_ROOT}"
+      }
       xkbvalidate "$xkbModel" "$layout" "$xkbVariant" "$xkbOptions"
       touch "$out"
     '');