1.4 MSYS2

1. Installation

MSYS2 Installation

2. Configuration

2.1. Windows Environment Variables

The old note added usr\bin, mingw64\bin, and mingw32\bin to the Windows PATH at the same time. MSYS2 environments use different CRTs, toolchains, and prefixes, so their bin directories should not all be mixed globally.

If unsure which environment to use, choose UCRT64. Let the launcher set the shell environment; a UCRT64 shell places /ucrt64/bin:/usr/bin first.

MSYS2_PATH_TYPE=inherit

2.2. Modify MSYS2 Configuration Files

Normally there is no need to hard-code MSYSTEM in multiple files. Prefer selecting the environment through its launcher.

<MSYS2_ROOT>\msys2_shell.cmd -defterm -here -no-start -ucrt64

The original winsymlinks, nsswitch.conf, and mirror settings were machine-specific. Change them only when required and do not publish personal absolute paths.

3. Common Software

3.1. Installation

pacman -Syu

pacman -S --needed \
  mingw-w64-ucrt-x86_64-toolchain \
  mingw-w64-ucrt-x86_64-gdb \
  mingw-w64-ucrt-x86_64-ffmpeg \
  mingw-w64-ucrt-x86_64-graphviz \
  git rsync vim zsh fish

3.2. Configuration

3.2.1. SSH

ssh.md

3.2.2. Git

git.md

3.2.3. GCC

gcc.md

4. IDE Integration

4.1. VSCode

<MSYS2_ROOT>\msys2_shell.cmd -defterm -here -no-start -ucrt64

4.2. GoLand

"<MSYS2_ROOT>\msys2_shell.cmd" -defterm -here -no-start -ucrt64

A normal Go project does not need MSYS2 merely because it is opened in an IDE; configure it when Unix tools or a local C/C++ toolchain are actually required.