Bug#781485: Processed: reassign 781485 to pbuilder

[Mattia Rizzolo]

control: reopen -1
control: reassign -1 libeatmydata1/82-6
control: owner -1 !
control: retitle -1 eatmydata: please document how to *correctly* use the library with chroots without using the eatmydata wrapper

On Tue, Mar 31, 2015 at 09:34:56AM +1300, Francois Marier wrote:
> > The actual question for the OP is: given that pbuilder has no direct
> > support for libeatmydata, and neither does gbp, how did you configure the
> > whole machinery?
> I just realized that I added this (and then totally forgot about it) to
> ~/.pbuilderrc about 5 years ago [1]:
> 
>     BINDMOUNTS="/var/cache/apt/archives"
>     APTCACHE=""
>     EXTRAPACKAGES="eatmydata"
>     
>     if [ -z "$LD_PRELOAD" ]; then
>       LD_PRELOAD=/usr/lib/libeatmydata/libeatmydata.so
>     else
>       LD_PRELOAD="$LD_PRELOAD":/usr/lib/libeatmydata/libeatmydata.so
>     fi
>     export LD_PRELOAD
> 
> So, I owe you all an apology for wasting your time, and sincere thanks for
> looking into it so quickly!
> 
> 
> [1] Based on https://np237.livejournal.com/29608.html

Actually there are really too many posts like this in the wide wild web.
I reassigned this bug to libeatmydata. I think I'll write a README.Debian file,
which will be available in /usr/share/doc/libeatmydata1/README.Debian to
document how to properly use libeatmydata with pbuilder.

For reference, the best method currently available is the one currently used by
the eatmydata wrapper:

    LD_LIBRARY_PATH=${LD_LIBRARY_PATH:+"$LD_LIBRARY_PATH:"}/usr/lib/libeatmydata
    LD_PRELOAD=${LD_PRELOAD:+"$LD_PRELOAD "}libeatmydata.so
    export LD_LIBRARY_PATH LD_PRELOAD

please also think about using the eatmydata wrapper. It got written for a
reason.

For people which lack shell maestry (I had difficults to understand what this
means the first time I saw this) the '${var:+"var"}/path/to/something' variable
definition means (more or less) "if variable is defined and non-empty, then
redefine it with the previous content, a colon, and then the text
"/path/to/something".

-- 
regards,
                        Mattia Rizzolo

GPG Key: 66AE 2B4A FCCF 3F52 DA18  4D18 4B04 3FCD B944 4540         .''`.
more about me:  http://mapreri.org                                 : :'  :
Launchpad user: https://launchpad.net/~mapreri                     `. `'`
Debian QA page: https://qa.debian.org/developer.php?login=mattia     `-
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