-- appveyor DownloadFile "http://kent.dl.sourceforge.net/project/msys2/Base/%MSYS2_ARCH%/msys2-base-%MSYS2_ARCH%-%MSYS2_BASEVER%.tar.xz" -FileName "msys2.tar.xz"
-- 7z x msys2.tar.xz
-- 7z x msys2.tar > NUL
-- msys64\usr\bin\bash -lc ""
-- msys64\usr\bin\bash -lc "for i in {1..3}; do pacman --noconfirm -Suy gcc make cmake perl && break || sleep 15; done"
-#- set PATH=C:\mingw64\bin;%PATH%
-#- set CC=gcc
+- if [%COMPILER%]==[MinGW] set PATH=C:\MinGW\bin;%PATH%
+- if [%COMPILER%]==[MinGW] mingw-get update
+- if [%COMPILER%]==[MinGW] rename "C:\Program Files (x86)\Git\bin\sh.exe" "sh2.exe"
+- if [%COMPILER%]==[MinGW-w64] set PATH=C:\mingw64\bin;%PATH%
+- if [%COMPILER%]==[MinGW-w64] rename "C:\Program Files (x86)\Git\bin\sh.exe" "sh2.exe"
+- if [%COMPILER%]==[MinGW-w64] appveyor DownloadFile "https://raw.githubusercontent.com/symengine/dependencies/5cff7d1736877336cf9fb58267111beea4fa152f/x86_64-4.9.1-release-posix-seh-rt_v3-rev1.7z" -FileName mw64.7z
+- if [%COMPILER%]==[MinGW-w64] 7z x -oC:\ mw64.7z > NUL
+- if [%COMPILER%]==[MSYS2] set PATH=C:\msys64\bin,%PATH%