More tries

ci/scripts/r_windows_build.sh

@@ -25,13 +25,21 @@ export ARROW_HOME="$(cd "${ARROW_HOME}" && pwd)"
 
 # Uncomment L38-41 if you're testing a new rtools dependency that hasn't yet sync'd to CRAN
 # curl https://raw.githubusercontent.com/r-windows/rtools-packages/master/pacman.conf > /etc/pacman.conf
-cat /etc/pacman.conf || echo "/etc/pacman.conf not found"
+cp /etc/pacman.conf /etc/pacman.conf.bak
+curl https://raw.githubusercontent.com/r-windows/rtools-packages/master/pacman.conf > /etc/pacman.conf
+cat /etc/pacman.conf
 curl -OSsl "http://repo.msys2.org/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz"
 pacman -U --noconfirm msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz && rm msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz
 pacman --noconfirm -Scc
 
 pacman --noconfirm -Syy
 pacman --noconfirm -S ${MINGW_PACKAGE_PREFIX}-cmake
+
+#Try reverting to the original pacman.conf
+cp /etc/pacman.conf.bak /etc/pacman.conf
+cat /etc/pacman.conf
+pacman --noconfirm -Syy
+
 RWINLIB_LIB_DIR="lib"
 : ${MINGW_ARCH:="mingw32 mingw64 ucrt64"}