creating pkgs on non-Darwin machines

[Clay Caviness]

Most things in a flat-file pkg can be created easily on most UNIX systems, except for the BOM. Thankfully, someone's spent time to reverse-engineer the file format: https://github.com/hogliux/bomutils 

With this, plus xar, you can create flat pkgs on non-Darwin UNIX.

I have an in-progress change for the luggage to support this:

https://github.com/ccaviness/luggage/compare/flatfile?expand=1

Once I get it cleaned up and tested better, I'll get it into the unixorn/luggage repository.

[Timothy Sutton]

boot2docker has been using this method for awhile to build their OS X distribution pkg inside a Docker container:

https://github.com/boot2docker/osx-installer/blob/master/Dockerfile


I like how the DMG creation is so simple - looks to be literally just an HFS+ filesystem built on an empty file of the appropriate size:

https://github.com/boot2docker/osx-installer/blob/master/makedmg.sh#L26-L38


Tim

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[Clay Caviness]

Good to see other people using bomutils! And that's interesting about creating simple DMGs - I had thought they would be more difficult.

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[Timothy Sutton]

I'd always assumed there was some extra magic area for checksums, etc. Maybe a compressed DMG is more complicated to do.

Then again, there's never been a real reason to put flat pkgs into a dmg in the first place except to add pretty artwork, instructions, etc.


Tim

> On Dec 18, 2014, at 12:40 PM, 'Clay Caviness' via The Luggage <the-l...@googlegroups.com> wrote:
>
> Good to see other people using bomutils! And that's interesting about creating simple DMGs - I had thought they would be more difficult.
>
> On Thu Dec 18 2014 at 9:16:37 AM Timothy Sutton <t...@synthist.net> wrote:
> boot2docker has been using this method for awhile to build their OS X distribution pkg inside a Docker container:
>
> https://github.com/boot2docker/osx-installer/blob/master/Dockerfile
>
>
> I like how the DMG creation is so simple - looks to be literally just an HFS+ filesystem built on an empty file of the appropriate size:
>
> https://github.com/boot2docker/osx-installer/blob/master/makedmg.sh#L26-L38
>
>
> Tim
>
>
> > On Dec 17, 2014, at 5:32 PM, Clay Caviness <ccav...@gmail.com> wrote:
> >
> > Most things in a flat-file pkg can be created easily on most UNIX systems, except for the BOM. Thankfully, someone's spent time to reverse-engineer the file format: https://github.com/hogliux/bomutils
> >
> > With this, plus xar, you can create flat pkgs on non-Darwin UNIX.
> >
> > I have an in-progress change for the luggage to support this:
> > https://github.com/ccaviness/luggage/compare/flatfile?expand=1
> >
> > Once I get it cleaned up and tested better, I'll get it into the unixorn/luggage repository.
> >
> > --
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>
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[Clay Caviness]

I have this opened up in a tab: http://newosxbook.com/DMG.html

On Thu Dec 18 2014 at 12:42:04 PM Timothy Sutton <t...@synthist.net> wrote:

I'd always assumed there was some extra magic area for checksums, etc.  Maybe a compressed DMG is more complicated to do.

Then again, there's never been a real reason to put flat pkgs into a dmg in the first place except to add pretty artwork, instructions, etc.


Tim

> On Dec 18, 2014, at 12:40 PM, 'Clay Caviness' via The Luggage <the-l...@googlegroups.com> wrote:
>
> Good to see other people using bomutils! And that's interesting about creating simple DMGs - I had thought they would be more difficult.
>
> On Thu Dec 18 2014 at 9:16:37 AM Timothy Sutton <t...@synthist.net> wrote:
> boot2docker has been using this method for awhile to build their OS X distribution pkg inside a Docker container:
>
> https://github.com/boot2docker/osx-installer/blob/master/Dockerfile
>
>
> I like how the DMG creation is so simple - looks to be literally just an HFS+ filesystem built on an empty file of the appropriate size:
>
> https://github.com/boot2docker/osx-installer/blob/master/makedmg.sh#L26-L38
>
>
> Tim
>
>
> > On Dec 17, 2014, at 5:32 PM, Clay Caviness <ccav...@gmail.com> wrote:
> >
> > Most things in a flat-file pkg can be created easily on most UNIX systems, except for the BOM. Thankfully, someone's spent time to reverse-engineer the file format: https://github.com/hogliux/bomutils
> >
> > With this, plus xar, you can create flat pkgs on non-Darwin UNIX.
> >
> > I have an in-progress change for the luggage to support this:
> > https://github.com/ccaviness/luggage/compare/flatfile?expand=1
> >
> > Once I get it cleaned up and tested better, I'll get it into the unixorn/luggage repository.
> >
> > --
> > You received this message because you are subscribed to the Google Groups "The Luggage" group.

> > To unsubscribe from this group and stop receiving emails from it, send an email to the-luggage+unsubscribe@googlegroups.com.

> > For more options, visit https://groups.google.com/d/optout.
>
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