profiles/default: fix the GC configuration

I got the settings wrong. The `weekly` applies to `nix.gc.dates`,
which is for how often the GC should run. While `nix.gc.options` is to
delete content in the store older than 14 days (in my case).

1 files changed, 1 insertions, 1 deletions

diff --git a/profiles/default.nix b/profiles/default.nix
index bcda0a2..198d9f4 100644
--- a/profiles/default.nix
+++ b/profiles/default.nix
@@ -87,7 +87,7 @@
 
     gc = {
       automatic = true;
-      options = "weekly";
+      options = "--delete-older-than 14d";
     };
   };