Re: [PATCH v3 4/4] dpkg-base: Update git alternates

[Alexander Smirnov <asmirnov@ilbers.de>]

Hi Jan,

On 12/11/2017 09:03 PM, Jan Kiszka wrote:
> On 2017-11-26 23:00, Alexander Smirnov wrote:
>> Update git alternates to work in buildchroot.
>>
>> Signed-off-by: Alexander Smirnov <asmirnov@ilbers.de>
>> ---
>>   meta/classes/dpkg-base.bbclass | 12 ++++++++++++
>>   1 file changed, 12 insertions(+)
>>
>> diff --git a/meta/classes/dpkg-base.bbclass b/meta/classes/dpkg-base.bbclass
>> index 5d7f8b6..6a78a26 100644
>> --- a/meta/classes/dpkg-base.bbclass
>> +++ b/meta/classes/dpkg-base.bbclass
>> @@ -18,12 +18,24 @@ dpkg_runbuild() {
>>   
>>   # Wrap the function dpkg_runbuild with the bind mount for buildroot
>>   do_build() {
>> +    if [ -d ${WORKDIR}/git/.git ]; then
>> +        OBJ_PATH=$(cat ${WORKDIR}/git/.git/objects/info/alternates)
>> +        REPO_PATH=$(dirname $OBJ_PATH)
>> +        REPO_NAME=$(basename $REPO_PATH)
>> +        echo "/git/$REPO_NAME/objects" > ${WORKDIR}/git/.git/objects/info/alternates
>> +    fi
>> +
>>       mkdir -p ${BUILDROOT}
>>       sudo mount --bind ${WORKDIR} ${BUILDROOT}
>>       _do_build_cleanup() {
>>           ret=$?
>>           sudo umount ${BUILDROOT} 2>/dev/null || true
>>           sudo rmdir ${BUILDROOT} 2>/dev/null || true
>> +
>> +        if [ -d ${WORKDIR}/git/.git ]; then
>> +            echo $OBJ_PATH > ${WORKDIR}/git/.git/objects/info/alternates
>> +        fi
>> +
>>           (exit $ret) || sudo umount ${BUILDCHROOT_DIR}/git
>>           (exit $ret) || bb_exit_handler
>>       }
>>
> 
> You can probably also amend (>>) the existing alternates with the path
> that is active in the chroot so that you can also look at the repo
> outside of it.
> 

I already tried it before. It works, but git also reports message like:

   error: alternates XXX is broken.

Not critical, but message looks nasty and annoying, also it's stored to 
build logs. :-(

Alex