Using a prepared https://github.com/lygstate/qemu/releases/download/v5.1.0/msys2-x86_64.tar.xz
for speed up the msys2/mingw prepare speed on the cirrus CI.
This file are generated by the msys2.docker

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
---
 .cirrus.yml | 60 ++++++++++++++---------------------------------------
 1 file changed, 16 insertions(+), 44 deletions(-)

diff --git a/.cirrus.yml b/.cirrus.yml
index 5363142373..1c2a05abd4 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -47,59 +47,31 @@ macos_xcode_task:
 
 windows_msys2_task:
   windows_container:
-    image: cirrusci/windowsservercore:cmake
+    image: cirrusci/windowsservercore:2019
     os_version: 2019
     cpu: 8
     memory: 8G
   env:
+    CIRRUS_SHELL: powershell
     MSYS: winsymlinks:nativestrict
     MSYSTEM: MINGW64
     CHERE_INVOKING: 1
-  printenv_script:
-    - C:\tools\msys64\usr\bin\bash.exe -lc 'printenv'
   install_script:
-    - C:\tools\msys64\usr\bin\bash.exe -lc "cd /c/tools &&
-        curl -O http://repo.msys2.org/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz"
-    - C:\tools\msys64\usr\bin\bash.exe -lc "cd /c/tools &&
-        curl -O http://repo.msys2.org/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz.sig"
-    - C:\tools\msys64\usr\bin\bash.exe -lc "cd /c/tools &&
-        pacman -U --noconfirm msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz"
-    - C:\tools\msys64\usr\bin\bash.exe -lc "pacman --noconfirm -Sy"
+    - |
+      Write-Output $env:PATH
+      md C:\tools
+      $start_time = Get-Date
+      bitsadmin /transfer msys_download /dynamic /download /priority FOREGROUND https://github.com/lygstate/qemu/releases/download/v5.1.0/msys2-x86_64.tar.xz C:\tools\msys2-x86_64.tar.xz
+      Write-Output "Download time taken: $((Get-Date).Subtract($start_time).Seconds) second(s)"
+      $start_time = Get-Date
+      cd C:\tools
+      choco install -y --no-progress 7zip
+      cmd /C "7z x msys2-x86_64.tar.xz -so | 7z x -aoa -simsys2-x86_64.tar -ttar -omsys64"
+      Write-Output "Extract time taken: $((Get-Date).Subtract($start_time).Seconds) second(s)"
     - C:\tools\msys64\usr\bin\bash.exe -lc "pacman --noconfirm -S --needed
-        bash pacman pacman-mirrors msys2-runtime"
-    - taskkill /F /IM gpg-agent.exe
-    - C:\tools\msys64\usr\bin\bash.exe -lc "pacman --noconfirm -Su"
-    - C:\tools\msys64\usr\bin\bash.exe -lc "pacman --noconfirm -S --needed
-        base-devel
-        git
-        mingw-w64-x86_64-python
-        mingw-w64-x86_64-python-setuptools
-        mingw-w64-x86_64-toolchain
-        mingw-w64-x86_64-capstone
-        mingw-w64-x86_64-SDL2
-        mingw-w64-x86_64-SDL2_image
-        mingw-w64-x86_64-gtk3
-        mingw-w64-x86_64-glib2
-        mingw-w64-x86_64-ninja
-        mingw-w64-x86_64-make
-        mingw-w64-x86_64-lzo2
-        mingw-w64-x86_64-zstd
-        mingw-w64-x86_64-libjpeg-turbo
-        mingw-w64-x86_64-pixman
-        mingw-w64-x86_64-libgcrypt
-        mingw-w64-x86_64-libpng
-        mingw-w64-x86_64-libssh
-        mingw-w64-x86_64-libxml2
-        mingw-w64-x86_64-snappy
-        mingw-w64-x86_64-libusb
-        mingw-w64-x86_64-usbredir
-        mingw-w64-x86_64-libtasn1
-        mingw-w64-x86_64-libnfs
-        mingw-w64-x86_64-nettle
-        mingw-w64-x86_64-cyrus-sasl
-        mingw-w64-x86_64-curl
-        mingw-w64-x86_64-gnutls
-        mingw-w64-x86_64-zstd"
+      mingw-w64-x86_64-python-sphinx
+      mingw-w64-x86_64-libnfs"
+
   script:
     - C:\tools\msys64\usr\bin\bash.exe -lc "mkdir build"
     - C:\tools\msys64\usr\bin\bash.exe -lc "cd build && ../configure
-- 
2.28.0.windows.1

These kind of changes are not appropriate for QEMU trivial.

On Wed, Oct 07, 2020 at 10:41:35AM +0800, Yonggang Luo wrote:
> Using a prepared https://github.com/lygstate/qemu/releases/download/v5.1.0/msys2-x86_64.tar.xz
> for speed up the msys2/mingw prepare speed on the cirrus CI.

I appreciate the desire to speed up CI, but relying on the contents of
a arbitrary blob provided by a user as the build environment is not
satisfatory for QEMU's CI.  The project has no visibility, control
or tracking over what is in that blob.

Any caches need to be managed by the CI system, and populated by
the defined CI job logic.


Regards,
Daniel
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