Installer builds are cooking nicely and should be done sometime tomorrow.
Installer will install in C:\Msys32 or C:\Msys64 by default and the user cannot change that. Reason i made it like that is to keep first time users from installing it in say
C:\program files (x86) which would break both the compiler and QT. The reason it breaks is that the compilers dont like PATHS with spaces and second the %PROGRAM_FILES% PATH is restricted on newer windows
so tools cannot write data in it.
The installer auto patches the QT dll's and executables to work in the directory where they are installed.
It runs a post autorebase on Msys2 to avoid dll races that would kill the Msys2 shell, it also sets up files and links for the Msys2 environment.
Reason this is needed is that the Msys2 main dll has a fixed base address so dependant dll's need to not try to write to its base address. (do not try to change the dll's to use aslr it does not work).
Both QT and Go can be used from a normal Windows console using ConEmu's tabs for that.
They also work with The Msys2 shell

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The Suite is large so be sure to have enough space on C:\ and only install one of them, Msys32 is for non 64 bit OS like XP but can be used on 64 bit OS if you want.
Remember though the MinGW64 compiler also installs on XP you cannot use a 64 bit compiler on a 32 bit OS, use MinGW32 instead.
If on Win7 or Vista or Win 8 64 use the Msys64 installer, it can still make 32 bit executables using the MinGW32 compiler.
The included CodeBlocks works on Both 32 and 64 bit OS but even though it detects the MinGW64 compiler you cannot use it on a 32 bit OS.
I included the Portable version of MikTex and its setup to work with Both MinGW32 and MinGW64, it can also be used to create documentation from sources using autotools like a gcc bootstrap,
besides allowing you to make your own documentation in pretty much any format

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Noteable stuff from the MinGW compilers.
Intel threading building blocks compiled for MinGW64.
Boost libraries.
Postgres SQL.
libsanitizer support.
clang + LLVM that work using the gcc libraries.
experimental polycc compiler for auto optimization using libgomp and graphite (not fully there yet).
Python with scons pyrexc and pywin addons (Built using MinGW32/64).
mysql-connector/C (interface to link up with the MySql libraries).
CdrTools (in case you want to make your own ISO's from a project).
Open Caml (Caml Language Compiler).
Clisp(One of the oldest managed languages, used in NASA's first computers. Very stable).
Ghostscript.
NetPbm(image tools).
tcsh tclsh wish (windows versions of some posix shells).
Go compilers.
Lua Support.
Mesa GLSL compiler and Support libraries.
GTK and friends.
ICU (unicode support libraries).
OPENSSL.
Stlport compiled for the MinGW compilers in case you need some functionality from these libraries.
A whole slew of multimedia and image libraries + opencv, to many to list.
Productivity is a state of mind.