[ci] avoid duplicatte AppVeyor builds (#3096)

b203bfb6 · James Lamb · GitHub · 58e9b1da · b203bfb6
Unverified Commit b203bfb6 authored May 17, 2020 by James Lamb Committed by GitHub May 16, 2020
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.appveyor.yml .appveyor.yml +6 -0

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--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -5,6 +5,12 @@ platform: x64
 configuration:  # a trick to construct a build matrix with multiple Python versions
  - 3.7

+# only build pull requests and
+# commits to 'master'
+branches:
+  only:
+    - master
+
 environment:
  matrix:
    - COMPILER: MINGW