Recent server update caused apt-cyg to start infinitely recursing about apt-cyg HOT 3 CLOSED

[deleted comment]

A good solution is to keep a list of already-installed requirements during 
requirement checks and installation. Then it could be:
* package
** cygwin
*** base-cygwin
*** _autorebase
**** dash
***** cygwin (in already-installed requirements list, skip)
**** libgcc1
***** cygwin (in already-installed requirements list, skip)
** requirement
*** cygwin (in already-installed requirements list, skip)
** ...

However, I don't mean keep a list of already-intsalled requirements from some 
setup file like /etc/setup/installed.db, but I mean to keep a list of what is 
already installed in the program that is empty when the program starts, even if 
it is reinstalling an already-installed package, so the program won't reinstall 
anything more than once.

Another good solution is to always skip installation of the package "cygwin", 
even if it's a requirement of any package, because it includes attempting to 
replace cygwin1.dll (which is surely in use by apt-cyg or any Cygwin 
application)

Fixed in r22, thanks.