Adjust windows configuration

[IronBlood]

1. Install msys2. msys2 uses pacman from Arch Linux to manage packages. There's no need to install MSVC any more. Use msys2 (UCRT64) instead for a better experience. Msys2 is effectively rolling, which means it's easy to get the latest packages.
2. Comment the line CheckSpace in /etc/pacman.conf with nano, this step is important, otherwise pacman would freeze checking disk space.
3. Run pacman -Syu to sync info of packages. Different mirrors are already provided in /etc/pacman.d/mirrorlist.*s out of the box, so it should be fine to update manually unless you need to use a different one.
4. Run the following command to install packages.

pacman -S \
  mingw-w64-ucrt-x86_64-toolchain \
  mingw-w64-ucrt-x86_64-neovim \
  mingw-w64-ucrt-x86_64-ripgrep \
  mingw-w64-ucrt-x86_64-fd

# Optional, but recommended
pacman -S mingw-w64-ucrt-x86_64-nodejs

Note: make sure /ucrt64/lib/libluajit-5.1.a is present, it should be installed by mingw-w64-ucrt-x86_64-luajit which is a dependency of mingw-w64-ucrt-x86_64-neovim.

[IronBlood]

Use GPG / pinentry on CLI

On msys2:

$ pacman -Ql pinentry
pinentry /usr/
pinentry /usr/bin/
pinentry /usr/bin/pinentry-w32.exe
pinentry /usr/bin/pinentry.exe
pinentry /usr/share/
pinentry /usr/share/info/
pinentry /usr/share/info/pinentry.info.gz

While on Arch Linux

$ pacman -Ql pinentry
pinentry /usr/
pinentry /usr/bin/
pinentry /usr/bin/pinentry
pinentry /usr/bin/pinentry-curses
pinentry /usr/bin/pinentry-emacs
pinentry /usr/bin/pinentry-gnome3
pinentry /usr/bin/pinentry-gtk
pinentry /usr/bin/pinentry-qt
pinentry /usr/bin/pinentry-qt5
pinentry /usr/bin/pinentry-tty
pinentry /usr/share/
pinentry /usr/share/applications/
pinentry /usr/share/applications/org.gnupg.pinentry-qt.desktop
pinentry /usr/share/applications/org.gnupg.pinentry-qt5.desktop
pinentry /usr/share/info/
pinentry /usr/share/info/pinentry.info.gz
pinentry /usr/share/pixmaps/
pinentry /usr/share/pixmaps/pinentry.png

There's no pinentry-tty or pinentry-curses available. So the configuration is a little bit different:

1. Put allow-loopback-pinentry in ~/.gnupg/gpg-agent.conf
2. Put pinentry-mode loopback in ~/.gnupg/gpg.conf
3. export GPG_TTY=$(tty) is still needed
4. Run echo "hello" | gpg --clearsign for testing