feat: initial

data/ssh.nix

@@ -0,0 +1,37 @@
+let
+  allKeyDir = "/etc/nixos/ssh_keys";
+  readKeyFile = filePath: 
+    let
+      content = builtins.readFile filePath;
+      # Split on newlines and filter out empty strings
+      lines = builtins.filter (line: line != "") (
+        builtins.filter builtins.isString (
+          builtins.split "\n" content
+        )
+      );
+    in lines;
+  
+  # Get all keys for a user
+  getUserKeys = username:
+    let
+      userDir = "${allKeyDir}/${username}";
+    in
+      if builtins.pathExists userDir then
+        let
+          files = builtins.attrNames (builtins.readDir userDir);
+          # Read all key files and flatten the list
+          allKeys = builtins.concatMap (file: 
+            readKeyFile "${userDir}/${file}"
+          ) files;
+        in allKeys
+      else [];
+  users = builtins.attrNames (builtins.readDir allKeyDir);
+in
+rec {
+  keys = builtins.listToAttrs (map (user: {
+    name = user;
+    value = getUserKeys user;
+  }) users);
+  ssh_users = users;
+  getKeys = getUserKeys;
+}