On Thu, Jun 15, 2023 at 12:15 PM gh via Cygwin  wrote:
>
> Dear all,
>
> Sorry if this question was already answered somewhere in the FAQ.
>
>
>
> I am running a deprecated 32bits version, and want to switch to 64bits. Install procedure is easy, but does not cover one thing : I
> would like to preserve the list of packages I have installed, and minimize the change of paths in my windows environment (did not
> change anything for the last 10 years, so I don't want to dig into where are things).
>
>
>
> Currently, cygwin is in C:\cygwin, which I have moved to C:\cygwin-bck. I then want to install in the now almost empty C:\cygwin,
> but copying there the necessary config files so that setup-x86_64.exe knows which packages to download.
>
>
>
> Thanks in advance,
>
>
>
> Gilbert
>
Hi Gilbert,

No need to rename the directory as the Cygwin 64 bit will be installed
in C:\Cygwin64 folder

Attached the script that I use to reinstall my system on different computers.
It can be adapted to duplicate the 32bit in a 64 bit installation

Assuming your file list is not longer than 32K, this should work :

  chmod + x cyg-reinstall.sh
   sed -e "1d"  /etc/setup/installed.db | sed -e "s/ .*$//" > filelist.txt
  ./cyg-reinstall.sh -f  filelist.txt
  cp cyg-reinstall-x86.bat cyg-reinstall-x86_64.bat
  sed -i -e "s/setup-x86.exe/setup-x86_64.exe/" cyg-reinstall-x86_64.bat

if the  "filelist.txt" is too long you can split in multiple chunks, like:

   grep -v "^lib" filelist.txt > nolib-list.txt
   grep "^lib" filelist.txt > lib-list.txt

I usually need to split mine, as my installation hit the 32K limit of
command line

 wc -l *.txt
  2608 filelist.txt
  1297 lib-list.txt
  1311 nolib-list.txt

 ls -1s *.txt
40K filelist.txt
20K lib-list.txt
20K nolib-list.txt

Regards
Marco