From 8a6716682e6ef59e0396a14d1d83abb6db7b2b81 Mon Sep 17 00:00:00 2001
From: James McCoy <jamessan@jamessan.com>
Date: Mon, 22 May 2023 19:24:36 -0400
Subject: [PATCH] fix(deps): restore functionality of USE_EXISTING_SRC_DIR

30a0299bc removed the USE_EXISTING_SRC_DIR hack which broke building the
nightly PPA since ExternalProject tried to download the sources.
---
 cmake.deps/CMakeLists.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/cmake.deps/CMakeLists.txt b/cmake.deps/CMakeLists.txt
index 4666ed4f1a..86d2228e68 100644
--- a/cmake.deps/CMakeLists.txt
+++ b/cmake.deps/CMakeLists.txt
@@ -88,7 +88,11 @@ foreach(dep ${DEPENDENCIES})
   list(GET dep 0 name)
   list(GET dep 1 value)
   if(NOT ${name})
-    set(${name} ${value})
+    # _URL variables must NOT be set when USE_EXISTING_SRC_DIR is set,
+    # otherwise ExternalProject will try to re-download the sources.
+    if(NOT USE_EXISTING_SRC_DIR)
+      set(${name} ${value})
+    endif()
   endif()
 endforeach()