From 5abe3f4aa61f33ac2124a624763e067257541871 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Th=C3=A9ophane=20Hufschmitt?= <theophane@hufschmitt.net>
Date: Tue, 5 Apr 2022 11:03:43 +0200
Subject: [PATCH] Allow `welcomeText` when checking a flake template

Fix https://github.com/NixOS/nix/issues/6321
---
 src/nix/flake.cc | 2 +-
 tests/flakes.sh  | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/nix/flake.cc b/src/nix/flake.cc
index 47a380238..ce7dc101a 100644
--- a/src/nix/flake.cc
+++ b/src/nix/flake.cc
@@ -463,7 +463,7 @@ struct CmdFlakeCheck : FlakeCommand
 
                 for (auto & attr : *v.attrs) {
                     std::string name(attr.name);
-                    if (name != "path" && name != "description")
+                    if (name != "path" && name != "description" && name != "welcomeText")
                         throw Error("template '%s' has unsupported attribute '%s'", attrPath, name);
                 }
             } catch (Error & e) {
diff --git a/tests/flakes.sh b/tests/flakes.sh
index ea629ae70..46e6a7982 100644
--- a/tests/flakes.sh
+++ b/tests/flakes.sh
@@ -376,6 +376,9 @@ cat > $templatesDir/flake.nix <<EOF
       trivial = {
         path = ./trivial;
         description = "A trivial flake";
+        welcomeText = ''
+            Welcome to my trivial flake
+        '';
       };
       default = trivial;
     };