appveyor: Cache pip's cache files.
It should speed up the Python packages installation.
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
diff --git a/appveyor.yml b/appveyor.yml
index a4e942c..ccb84fd 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -33,7 +33,9 @@
# - https://www.appveyor.com/blog/2014/06/04/shallow-clone-for-git-repositories
clone_depth: 100
+# https://www.appveyor.com/docs/build-cache/
cache:
+- '%LOCALAPPDATA%\pip\Cache -> appveyor.yml'
- win_flex_bison-2.5.15.zip
- llvm-5.0.1-msvc2017-mtd.7z