[PATCH] Windows installer: keep dependency cache

[Arthur Sengileyev <arthur.sengileyev@gmail.com>]

It should be possible to reuse cache built by previous iteration
processing next executables. Already processed dependencies are
already skipped later based on dll name.

Signed-off-by: Arthur Sengileyev <arthur.sengileyev@gmail.com>
---
 scripts/nsis.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/nsis.py b/scripts/nsis.py
index 03ed7608a2..a2e52df556 100644
--- a/scripts/nsis.py
+++ b/scripts/nsis.py
@@ -91,12 +91,13 @@ def main():
         print("Searching '%s' for the dependent dlls ..." % search_path)
         dlldir = os.path.join(destdir + prefix, "dll")
         os.mkdir(dlldir)
+        depscache = set()
 
         for exe in glob.glob(os.path.join(destdir + prefix, "*.exe")):
             signcode(exe)
 
             # find all dll dependencies
-            deps = set(find_deps(exe, search_path, set()))
+            deps = set(find_deps(exe, search_path, depscache))
             deps.remove(exe)
 
             # copy all dlls to the DLLDIR
-- 
2.39.0