[DRE-maint] Let's discuss big changes in Ruby packaging for squeeze+1

[Deepak Tripathi]

Hi Marcelo,

Sorry to delay.

So currently repack.sh is getting call with debian/watch file

(uscan --force-download --rename --destdir ../tarballs).

It was a fix for subversion when you download upstream source and keep
it in ../tarballs  before running svn-buildpackage.


 I haven't said that it will work as it is, but yes we can take this and
modified as per our need. :)



Thanks
Deepak.

On Thu, Apr 22, 2010 at 7:03 PM, Marcelo E. Magallon <mmagallo at debian.org>wrote:

> On Thu, Apr 22, 2010 at 09:35:14AM +0530, Deepak Tripathi wrote:
>
> > 2) I have already created a script repack.sh to convert
> > gemtotar format. we can use this (if it is not buggy). its
> > available in svn[2]. let me know your input.
>
>  Looking at the script, I'm not sure about its purpose:
>
> #!/bin/sh
> # Repackage upstream source to exclude non-distributable files
> # should be called as "repack.sh --upstream-source <ver>
> # <downloaded file> (for example, via uscan)
>
> set -e
> set -u
>
> VER="$2"
> FILE="$3"
> PKG=`dpkg-parsechangelog|grep ^Source:|sed 's/^Source: //'`
>
>  Does it need an already existing Debian package, or am I
>  misunderstanding something?
>
>  Also:
>
> # Create an extra directory to cope with rootless tarballs
> UP_BASE="$DIR/unpack"
> mkdir "$UP_BASE"
> gem unpack "$FILE" --target "$UP_BASE"
>
>  If I try for example:
>
>  $ gem unpack caper-0.2.0.gem --target $PWD/test-dir
>  ERROR:  While executing gem ... (Gem::FilePermissionError)
>     You don't have write permissions into the /var/lib/gems/1.8 directory.
>
>  and test-dir/caper-0.2.0 gets created, but it's empty.
>
>  When I was exploring a similar idea, I was thinking of going
>  with:
>
>  DIR=`basename "$gem" .gem`
>  mkdir "$DIR"
>  tar xOf "$gem" data.tar.gz | tar -C "$DIR" -xzf -
>
>  And using the gem metadata to extract things like the gem name,
>  version, etc.
>
>  But then I realised that it's better to use Rubygem's library,
>  which allows for something like:
>
>    require 'rubygems/format'
>    format = Gem::Format.from_file_by_path ARGV.first
>    spec = format.spec
>    puts "Gem: #{spec.name} (#{spec.version})"
>    format.file_entries.each do |entry, data|
>       # entry['path'] is the file's path
>       # entry['mode'] is the file's mode
>       # data contains the actual file data
>
>       # you only need to add sanity checks and filters here and
>       # write data to entry['path']
>    end
>
>  It's a real pity that the gem spec does not include the license
>  information in a machine readable format.
>
>  Cheers,
>
>  Marcelo
>



-- 
Deepak Tripathi
E3 71V3 8Y C063 (We Live By Code)
http://deepaktripathi.blogspot.com
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