Add edit-config script to quickly edit dotfiles

packages/edit-config/default.nix

@@ -0,0 +1,31 @@
+{
+# Snowfall Lib provides a customized `lib` instance with access to your flake's library
+# as well as the libraries available from your flake's inputs.
+lib,
+# You also have access to your flake's inputs.
+inputs,
+
+# All other arguments come from NixPkgs. You can use `pkgs` to pull packages or helpers
+# programmatically or you may add the named attributes as arguments here.
+pkgs, stdenv, ... }:
+
+pkgs.writeShellApplication {
+  name = "edit-config";
+
+  runtimeInputs = with pkgs; [ fd fzf ];
+
+  text = ''
+    FILE=$(fd -H -t f . ~/.dotfiles | fzf --query "$1")
+    if [[ "$FILE" != "" ]]; then
+      $EDITOR "$FILE"
+    else
+      exit 1
+    fi
+
+    read -rp 'Run "home-manager switch"? [Yn]: ' yn
+    case $yn in
+        Y | y | Yes | yes | "" ) home-manager switch;;
+        * ) echo "Not switching home-manager configuration";;
+    esac
+  '';
+}