it seems tlmgr path add won't take effect without reopening the shell, so try to manually add the path

yihui · yihui · commit c225f84f46ef · 2018-05-26T23:13:20.000-05:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -1,3 +1,6 @@
+environment:
+  PATH: "%APPDATA%\TinyTeX\bin\win32;%PATH%"
+
 build_script:
   - echo | tools\install-windows.bat
 
