write-text: remove support for `copy`

This is a huge anti‐declarative footgun; `copy` files cannot
distinguish if a previous version is managed by nix-darwin, so they
can’t check the hash, so they’re prone to destroying data, and
copied files are not deleted when they’re removed from the system
configuration, which led to a security bug. Nothing else in‐tree
was using this functionality, so let’s make sure it doesn’t
cause any more bugs.

1 files changed, 0 insertions, 8 deletions

diff --git a/modules/lib/write-text.nix b/modules/lib/write-text.nix
index 2fe02af..ddf4076 100644
--- a/modules/lib/write-text.nix
+++ b/modules/lib/write-text.nix
@@ -45,14 +45,6 @@ in
       '';
     };
 
-    copy = mkOption {
-      type = types.bool;
-      default = false;
-      description = ''
-        Whether this file should be copied instead of symlinking.
-      '';
-    };
-
     knownSha256Hashes = mkOption {
       internal = true;
       type = types.listOf types.str;