From d683e551b48ed52d9d8aa8bd27f155da8c8d3e60 Mon Sep 17 00:00:00 2001
From: Tomate0613 <69756782+Tomate0613@users.noreply.github.com>
Date: Sun, 1 Feb 2026 20:07:54 +0100
Subject: [PATCH] validate config in home-manager

---
 nix/hm-modules.nix | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/nix/hm-modules.nix b/nix/hm-modules.nix
index 85d5790..827bb13 100644
--- a/nix/hm-modules.nix
+++ b/nix/hm-modules.nix
@@ -12,6 +12,18 @@ self: {
     ${lib.optionalString cfg.systemd.enable systemdActivation}
     ${cfg.autostart_sh}
   '';
+  validatedConfig = pkgs.runCommand "mango-config.conf" { } ''
+    cat > "$out" <<'EOF'
+    ${cfg.settings}
+    EOF
+
+    output=$(${cfg.package}/bin/mango -c "$out" -p 2>&1 || true)
+
+    if echo "$output" | grep -Fq '[ERROR]:'; then
+      echo "$output"
+      exit 1
+    fi
+  '';
 in {
   options = {
     wayland.windowManager.mango = with lib; {
@@ -99,7 +111,7 @@ in {
     home.packages = [cfg.package];
     xdg.configFile = {
       "mango/config.conf" = lib.mkIf (cfg.settings != "") {
-        text = cfg.settings;
+        source = validatedConfig;
       };
       "mango/autostart.sh" = lib.mkIf (cfg.autostart_sh != "") {
         source = autostart_sh;