REMOVE THIS ONE

modules/home/feh/default.nix

@@ -13,8 +13,8 @@ in
 
   config.my.home.xdg.mime-apps = lib.mkIf cfg.enable {
     applications.media.image = {
-      bitmap = [ "feh.desktop" ];
+      bitmap = "feh.desktop";
-      vector = [ "feh.desktop" ];
+      vector = "feh.desktop";
     };
   };
 }

modules/home/firefox/default.nix

@@ -81,6 +81,6 @@ in
   };
 
   config.my.home.xdg.mime-apps = lib.mkIf cfg.enable {
-    applications.editor = [ "firefox.desktop" ];
+    applications.browser = "firefox.desktop";
   };
 }

modules/home/mail/himalaya/default.nix

@@ -22,6 +22,6 @@ in
   };
 
   config.my.home.xdg.mime-apps = lib.mkIf cfg.enable {
-    applications.editor = [ "himalaya.desktop" ];
+    applications.editor = "himalaya.desktop";
   };
 }

modules/home/mpv/default.nix

@@ -20,8 +20,8 @@ in
 
     my.home.xdg.mime-apps = {
       applications.media = {
-        audio = [ "mpv.desktop" ];
+        audio = "mpv.desktop";
-        video = [ "mpv.desktop" ];
+        video = "mpv.desktop";
       };
     };
   };

modules/home/terminal/alacritty/default.nix

@@ -50,7 +50,7 @@ in
     };
 
     my.home.xdg.mime-apps = {
-      applications.terminal = [ "Alacritty.desktop" ];
+      applications.terminal = "Alacritty.desktop";
     };
   };
 }

modules/home/terminal/termite/default.nix

@@ -51,7 +51,7 @@ in
     };
 
     my.home.xdg.mime-apps = {
-      applications.terminal = [ "termite.desktop" ];
+      applications.terminal = "termite.desktop";
     };
   };
 }

modules/home/vim/default.nix

@@ -106,6 +106,6 @@ in
   config.xdg.configFile = lib.mkIf cfg.enable configFiles;
 
   config.my.home.xdg.mime-apps = lib.mkIf cfg.enable {
-    applications.editor = [ "nvim.desktop" ];
+    applications.editor = "nvim.desktop";
   };
 }

modules/home/xdg/mime-apps.nix

@@ -3,11 +3,10 @@ let
   cfg = config.my.home.xdg.mime-apps;
   app = cfg.applications;
 
-  strOrStrList = with lib.types; coercedTo str lib.singleton (listOf str);
   mkMimeAppOption = kind: lib.mkOption {
     description = "Application to associate as ${kind}";
     default = null;
-    type = lib.types.nullOr strOrStrList;
+    type = with lib.types; nullOr str;
   };
 in
 {

modules/home/zathura/default.nix

@@ -20,9 +20,9 @@ in
 
   config.my.home.xdg.mime-apps = lib.mkIf cfg.enable {
     applications.media.document = {
-      comic = [ "org.pwmt.zathura.desktop" ];
+      comic = "org.pwmt.zathura.desktop";
-      ebook = [ "org.pwmt.zathura.desktop" ];
+      ebook = "org.pwmt.zathura.desktop";
-      pdf = [ "org.pwmt.zathura.desktop" ];
+      pdf = "org.pwmt.zathura.desktop";
     };
   };
 }