Index: appveyor.yml
===================================================================
diff -u -N -r96b79f58cb3a7c622c468e77e646f4fde0e7de6b -r2b4c8032c325c0bcc8a22b910e6056962d2f4e5e
--- appveyor.yml	(.../appveyor.yml)	(revision 96b79f58cb3a7c622c468e77e646f4fde0e7de6b)
+++ appveyor.yml	(.../appveyor.yml)	(revision 2b4c8032c325c0bcc8a22b910e6056962d2f4e5e)
@@ -20,6 +20,7 @@
   - appveyor DownloadFile "%TCLKIT_URL%" -FileName "%TCLKIT%"
   - set CHERE_INVOKING=1
   - bash -lc "echo \"export PATH=`pwd`/${MINGW_DIR}/bin:$PATH\" >> ~/.bash_profile"
+  - pacman -S --noconfirm --needed mingw-w64-x86_64-gcc
 
 build_script:
   - tclkit.exe apps/build.tcl %CD% %APPVEYOR_BUILD_FOLDER% %TCLTAG%