From b64c1d036ffb9a4c4eaaea056e132775de62fc1d Mon Sep 17 00:00:00 2001
From: Antoine Cotten <hello@acotten.com>
Date: Wed, 11 Sep 2024 11:22:21 +0200
Subject: [PATCH] tools: fix darwin-rebuild changelog

The script returns early when $systemConfig is empty, which prevents the
changelog from being displayed.
---
 pkgs/nix-tools/darwin-rebuild.sh | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/pkgs/nix-tools/darwin-rebuild.sh b/pkgs/nix-tools/darwin-rebuild.sh
index b88858d5..aa066865 100644
--- a/pkgs/nix-tools/darwin-rebuild.sh
+++ b/pkgs/nix-tools/darwin-rebuild.sh
@@ -203,7 +203,7 @@ if [ "$action" = edit ]; then
   fi
 fi
 
-if [ "$action" = switch ] || [ "$action" = build ] || [ "$action" = check ]; then
+if [ "$action" = switch ] || [ "$action" = build ] || [ "$action" = check ] || [ "$action" = changelog ]; then
   echo "building the system configuration..." >&2
   if [ -z "$flake" ]; then
     systemConfig="$(nix-build '<darwin>' "${extraBuildFlags[@]}" -A system)"
@@ -252,11 +252,7 @@ if [ "$action" = switch ] || [ "$action" = activate ] || [ "$action" = rollback
 fi
 
 if [ "$action" = changelog ]; then
-  echo >&2
-  echo "CHANGELOG" >&2
-  echo >&2
-  head -n 32 "$systemConfig/darwin-changes"
-  echo >&2
+  ${PAGER:-less} -- "$systemConfig/darwin-changes"
 fi
 
 if [ "$action" = check ]; then