Re: dpkg-checkbuilddeps to generate a frontend friendly package list

[George Danchev <danchev@spnet.net>]

> ]] George Danchev
> 
> | I fixed some bugs with my previous patch, and now the new one is found at
> | [1]. Unfortunately, I also found that I erroneously believed that AptPkg
> | is only loaded run-time, which is not true and I will need to find ways
> | to tackle that as well. For the time being, libapt-pkg-perl is need, but
> | the apt cache is only loaded when the -f option is used, and not with -s.
> | You can see that is you comment $_config->{quiet} = 2;
> 
> Use something like
> 
> eval {
>     require AptPkg::Config;
>     import AptPkg::Config '$_config';
>     require AptPkg::System;
>     import AptPkg::System '$_system';
>     require AptPkg::Cache;
>     require AptPkg::Version;
> };
> if ($@) {
>   die "libapt-pkg-perl not available, can't use -f";
> }
> 
> to do the check at run-time.

That was helpful. Immediately after that, since $_system and $_config are only 
defined if AptPkg is used I also had to add:

    eval {                                                                      
        no strict;                                                              
        no warnings;                                                            
        $_config->init;                                                         
        $_config->{quiet} = 2;                                                  
        $_system = $_config->system;                                            
        $_sysver = $_system->versioning;                                        
        $_cache = AptPkg::Cache->new;                                           
        use warnings;                                                           
        use strict;                                                             
    };                                                                          
    if ($@) {                                                                   
        die "failed to initialize AptPkg.\n";                                   
    }                                   

my third attempt is found at:
http://people.debian.org/~danchev/dpkg/frontend3.patch

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