From 4b34feb4c2fded8b4ca0968f33f0e34514520b1a Mon Sep 17 00:00:00 2001
From: Robert Hensing <robert@roberthensing.nl>
Date: Sat, 13 Jul 2024 01:22:51 +0200
Subject: [PATCH] dropEmptyInitThenConcatStringsSep -> concatStringSep: system
 string should not be empty

---
 src/nix/flake.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/nix/flake.cc b/src/nix/flake.cc
index 3ee2b1838..1ed071ec8 100644
--- a/src/nix/flake.cc
+++ b/src/nix/flake.cc
@@ -21,6 +21,8 @@
 #include <nlohmann/json.hpp>
 #include <iomanip>
 
+#include "strings-inline.hh"
+
 using namespace nix;
 using namespace nix::flake;
 using json = nlohmann::json;
@@ -802,10 +804,11 @@ struct CmdFlakeCheck : FlakeCommand
             throw Error("some errors were encountered during the evaluation");
 
         if (!omittedSystems.empty()) {
+            // TODO: empty system is not visible; render all as nix strings?
             warn(
                 "The check omitted these incompatible systems: %s\n"
                 "Use '--all-systems' to check all.",
-                dropEmptyInitThenConcatStringsSep(", ", omittedSystems)
+                concatStringsSep(", ", omittedSystems)
             );
         };
     };