From 8d74983103a7a9721a8fea84d8e867d4f95a1ef7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
Date: Fri, 19 Apr 2024 13:54:01 +0200
Subject: [PATCH] deploy-docs: fix undefined variable

---
 docs/nix/deploy-docs.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/nix/deploy-docs.nix b/docs/nix/deploy-docs.nix
index 65a66fc2..e0cf6878 100644
--- a/docs/nix/deploy-docs.nix
+++ b/docs/nix/deploy-docs.nix
@@ -17,7 +17,7 @@ writeShellScriptBin "deploy-docs" ''
     ]
   }"
 
-  if [ -n "$SSH_HOMEPAGE_KEY" ]; then
+  if [ -n "''${SSH_HOMEPAGE_KEY:-}" ]; then
     echo "$SSH_HOMEPAGE_KEY" > ./ssh_key
     chmod 600 ./ssh_key
     sshExtraArgs="-i ./ssh_key"