From 2c3627f5cc5d3d429548f13305b8956e01c95037 Mon Sep 17 00:00:00 2001
From: Colton Clemmer <cole.clemmer@gmail.com>
Date: Tue, 7 Mar 2023 12:55:58 -0600
Subject: [PATCH] change from not . null to notNull

---
 cabal-install/src/Distribution/Client/ProjectBuilding.hs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cabal-install/src/Distribution/Client/ProjectBuilding.hs b/cabal-install/src/Distribution/Client/ProjectBuilding.hs
index 8a60718ede0..bccbdcd646f 100644
--- a/cabal-install/src/Distribution/Client/ProjectBuilding.hs
+++ b/cabal-install/src/Distribution/Client/ProjectBuilding.hs
@@ -586,7 +586,7 @@ rebuildTargets verbosity
                  buildSettingNumJobs,
                  buildSettingKeepGoing
                }
-  | fromFlagOrDefault False (projectConfigOfflineMode config) && not (null packagesToDownload) = return offlineError
+  | fromFlagOrDefault False (projectConfigOfflineMode config) && notNull packagesToDownload = return offlineError
   | otherwise = do
     -- Concurrency control: create the job controller and concurrency limits
     -- for downloading, building and installing.