diff --git a/configuration.nix b/configuration.nix
index 10b8535..554bdfc 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -4,19 +4,20 @@ with builtins;
 with lib;
 
 let
-  fn = import ./fn.nix { inherit lib; };
+  fn = import (toString ./fn.nix) { inherit lib; };
   # Cannot use <hostName> here as those evaluations only work with existing paths >.<
   # hostName and secretPtah can be set with -I hostName=$HOSTNAME and -I secretPath=$SECRETPATH respectively
   # , defaults to the contents of /secret/hostName
-  secretPath = fn.ifelse ((tryEval <secretPath>).value != false)
-    <secretPath>
-    /secret;
-  hostName = (findFirst
-    (elem: elem.prefix == "hostName")
-    { path = (fileContents "${secretPath}/hostName"); }
-    nixPath
+  secretPath = fn.ifelse ((tryEval (toString <secretPath>)).value != false)
+    (toString <secretPath>)
+    (toString /secret);
+  hostName = (
+    findFirst
+      (elem: elem.prefix == "hostName")
+      { path = (fileContents "${secretPath}/hostName"); }
+      nixPath
   ).path;
-  machinePath = (builtins.toPath ( ./machines + ("/" + hostName)));
+  machinePath = (builtins.toPath (./machines + ("/" + hostName)));
   machineFiles = fn.lst { p = machinePath; b = true; };
   configFiles = fn.lst { p = (toString ./config); b = true; };
   pkgsFiles = fn.lst { p = (toString ./pkgs); b = true; };
diff --git a/fn.nix b/fn.nix
index 3d57527..8fd80df 100644
--- a/fn.nix
+++ b/fn.nix
@@ -9,6 +9,8 @@ rec {
     (pathIsRegularFile a)
     a b);
   cwd = toString ./.;
+
+  # lst (string PATH) (string FILETYPE) (bool RETURNFULLPATH)
   lst = { p ? cwd, t ? "regular", b ? false }: (lists.forEach
     (attrNames
       (filterAttrs (n: v: v == t)
@@ -23,11 +25,25 @@ rec {
         (hasAttrByPath a d)
         (hasAttr a d)))
     aList);
-  pkgFilter = l: (filter
+  deps = p: ifelse (isAttrs p) (filter (p: isAttrs p)
+    (p.buildInputs ++ p.nativeBuildInputs ++ p.propagatedBuildInputs ++ p.propagatedNativeBuildInputs)
+  ) [];
+  importFilter = l: p: filter (n: elem (nameFromURL (toString n) ".") l) p;
+  depsRec = ld: ifelse (ld == []) [] ((toList ld) ++ (depsRec (lists.unique (lists.flatten (map (d: deps d) (toList ld))))));
+  isBroken = p: ifelse ((elem true (hasAttrs [["meta" "broken"]] p)) && (p.meta.broken == true))
+    (warn "Package ${p.name} is marked as broken." true)
+    false;
+  depsBroken = p: lists.any (p: (isBroken p)) (deps p);
+  # Those two lines are quite magical 🧙
+  depsBrokenRec = p: (b: b == true) (ifelse (depsBroken p) true
+    (map (p: depsBrokenRec p) (deps p)));
+  pkgFilter = ld: (filter
     (p: (
-      ifelse (elem true (hasAttrs [["meta" "broken"]] p))
-        (warn "Package ${p.name} is marked as broken." false)
-        true)
-    )
-    l);
+      ifelse (isBroken p)
+        false
+        (ifelse (depsBrokenRec p)
+          (warn "Dependency of ${p.name} is marked as broken." false)
+          true)
+    ))
+    ld);
 }