diff --git a/lib/libde.nix b/lib/libde.nix
new file mode 100644
index 0000000..7131a59
--- /dev/null
+++ b/lib/libde.nix
@@ -0,0 +1,27 @@
+{ currentSystemDe, lib, ... }:
+let
+  ifDesktop = de: content: {
+    _type = "if";
+    condition = currentSystemDe == de;
+    inherit content;
+  };
+  ifNotDesktop = de: content: {
+    _type = "if";
+    condition = currentSystemDe != de;
+    inherit content;
+  };
+  ifGnome = ifDesktop "gnome";
+  ifPlasma = ifDesktop "plasma";
+  ifNone = ifDesktop "none";
+  ifNotNone = ifNotDesktop "none";
+in
+{
+  inherit
+    ifDesktop
+    ifNotDesktop
+    ifGnome
+    ifPlasma
+    ifNone
+    ifNotNone
+    ;
+}