feat: nixos module

src/net/deertopia/doerg/cached_file.clj

@@ -18,8 +18,10 @@
   calling `compute` with no arguments only if stale? is logical true."
   [& {:keys [file stale? compute]}]
   (when (or (not *use-cache?*) stale?)
-    (let [r (compute)]
+    (let [r (compute)
+          dir (fs/parent file)]
       (assert (string? r))
-      (fs/create-dirs (fs/parent file))
+      (when-not (fs/exists? dir)
+        (fs/create-dirs dir))
       (spit file r)))
   file)

src/net/deertopia/doerg/config.clj

@@ -46,7 +46,8 @@
   "Aero tag to search for a directory on $XDG_DATA_DIRS."
   (some #(let [x (fs/path % value)]
            (and (fs/exists? x) x))
-        (fs/split-paths (System/getenv "XDG_DATA_DIRS"))))
+        (some-> (System/getenv "XDG_DATA_DIRS")
+                fs/split-paths)))
 
 (defmethod aero/reader 'file
   [{:keys [source]} tag value]