diff --git a/scripts/setup/machine-setup/lib/dev.sh b/scripts/setup/machine-setup/lib/dev.sh
index 8333280a..d943290c 100644
--- a/scripts/setup/machine-setup/lib/dev.sh
+++ b/scripts/setup/machine-setup/lib/dev.sh
@@ -155,7 +155,19 @@ nvim_latest_version() {
 #
 # The old install is removed only after the download has succeeded, so a failed
 # fetch leaves the working copy alone.
+#
+# This had NO macOS branch at all until it was caught here: unconditionally fetched
+# nvim-linux-<arch>.tar.gz regardless of $OS, which 404s on a Mac. Not a crash — the
+# caller's `if nvim_install; then … else warn …` catches the failure and reports it as
+# ERRORS+=("Neovim: install failed") rather than aborting the run — but Neovim never
+# actually landed. brew has a real, current formula, so that's the macOS path instead of
+# reaching for a macOS release asset the way lazygit's fix did.
 nvim_install() {
+  if [[ "${OS:-}" == "macos" ]]; then
+    brew install neovim
+    return
+  fi
+
   local asset tarball dest
   asset="$(nvim_asset)"
   tarball="/tmp/nvim-linux-${asset}.tar.gz"