[2.7] Cache externals, depending on changes to PCbuild (GH-3308) (#3365)

(cherry picked from commit f801322e92384ef3eac2a9b7ac2c49d37102d0f3)

diff --git a/.github/appveyor.yml b/.github/appveyor.yml
index b809ad680b1498b2e4d453ddf795e58bec896aa2..2cd9a42feb8d2f63e61f523f6b6569c56ea2381a 100644 (file)
--- a/.github/appveyor.yml
+++ b/.github/appveyor.yml
@@ -5,6 +5,8 @@ branches:
     - master
     - /\d\.\d/
     - buildbot-custom
+cache:
+  - externals -> PCbuild\*
 build_script:
 - cmd: PCbuild\build.bat -e
 - cmd: PCbuild\python.exe -m test.pythoninfo