Installing a "copy" of an installation on a new computer

[Thomas Wolff]

On 10.03.2010 15:56, Larry Hall (Cygwin) wrote:
> On 3/10/2010 2:38 AM, Olle Olsson wrote:
>> Hi,
>>
>> I found the following
>>    http://www.cygwin.com/ml/cygwin/2006-05/msg00753.html
>> which might provide one practical solution. Will try this.
>
> Thanks for the vote of confidence but since that was a fairly
> labor intensive way of doing it and came at a time when 'setup.exe'
> wasn't as equipped as it is today to handle this more directly, I
> would no longer advocate going that route.  Using 'setup.exe' at
> the command line and specifying the packages you want is a better
> way to go.
As I understand the sparse description setup --help gives for -P, you 
would have to list all packages separately.
I don't feel that's easier than to use a slightly modified copy of 
installed.db.
An option to use a package list from a file (ignoring version 
information) would be helpful,
and a hint how to get that information from an existing installation.

Actually this reminds me of a script I made a few weeks ago to recover a 
damaged installed.db (not strictly related, sorry);
After I had switched setup target directories (for a second test 
installation of cygwin on a machine), somehow installed.db of my first 
installation was missing all my extra packages and setup wanted to 
install everything again, so I recovered installed.db from the package 
directory. Script attached in case it's of interest for anyone.

------
Thomas
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