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-rw-r--r--third_party/nixpkgs/default.nix8
1 files changed, 3 insertions, 5 deletions
diff --git a/third_party/nixpkgs/default.nix b/third_party/nixpkgs/default.nix
index 23f09ff5f716..3471468c4cfd 100644
--- a/third_party/nixpkgs/default.nix
+++ b/third_party/nixpkgs/default.nix
@@ -26,11 +26,9 @@ let
   # instead (e.g. because something is broken in unstable).
   # Use `stableNixpkgs` from above.
   stableOverlay = _unstableSelf: _unstableSuper: {
-
-    # emacs27 is gone from unstable, but people should upgrade at
-    # their own pace.
-    emacs27 = builtins.trace "emacs27 is deprecated, please migrate to emacs28"
-      stableNixpkgs.emacs27;
+    # bat syntaxes changed with syntect 5.0, but cheddar is still on 4.x
+    # TODO(tazjin): upgrade cheddar to syntect 5.0
+    bat = stableNixpkgs.bat;
   };
 
   # Overlay to expose the nixpkgs commits we are using to other Nix code.