colorls for Babun/Cywgin with pact installed - really slow :-(

Hi,

i just installed colorls on Cygwin/Babun 64 Bit, which is integrated via Cmder/ConEmu and its working niceley except the speed fact.

i installed it with these commands:
```
pact install rubygems
gem update --system
pact install ruby-devel
gem install colorls
```

The fonts i use with Cmder are DeJaVuSansMono Nerd Font and font-awesome-extension to the Windows font directory C:\Windows\fonts

I added Babun to Cmder with this task definition:
```
set "HOME=%ConEmuDir%\..\..\..\Babun\.babun\cygwin\home\%username%" & set "PATH=%ConEmuDir%\..\..\..\Babun\.babun\cygwin\bin;%PATH%" &%ConEmuBaseDirShort%\conemu-cyg-64.exe %ConEmuDir%\..\..\..\Babun\.babun\cygwin\bin\bash.exe --login -i -new_console:p:t:"Babun":P:"Babun"
```

However in Babun it takes about 20 seconds to load colorls

It seems that ruby is the problem but i cannot figure out the reason. Did somebody of you know how to speed up ruby/cygwin/colorls? I'd like to use colorls as alias for ll and ls, but the slowdown makes impossible to use

regards, Mario

The issue names the colorls gem and the Babun/Cygwin launch command, but no repository file or test. Start by reproducing the roughly 20-second `colorls` startup in that environment and compare it with Ruby or colorls startup outside Babun. Done means identifying the startup bottleneck and documenting or implementing a verified way to avoid the slowdown.

Written by the indexing model from the issue text.