Re: Powerbox for SWT?

On 27 June 2010 23:26, Thomas Leonard <[email protected]> wrote:
> On 27 June 2010 21:53, Mark Miller <[email protected]> wrote:
>> On Sun, Jun 27, 2010 at 6:10 AM, Thomas Leonard <[email protected]> wrote:
>>>
>>> I had a go at integrating 0install with the new E loader stuff.
>>
>> Hi Thomas, what is 0install?
>
> Hi Mark, it's an installer I work on:
>
>  http://0install.net/

Pretty neat. Since you have sandboxing ambitions, perhaps I should
mention http://www.cl.cam.ac.uk/research/security/capsicum/.

>
> It's mainly used on Linux. For example, on a clean Ubuntu system, you
> can run E like this:
>
> $ sudo apt-get install zeroinstall-injector
>
> $ 0launch http://repo.roscidus.com/e/e-core
> ?
>
> Or, to run an SWT program you could do:
>
> $ 0launch http://repo.roscidus.com/e/e-swt myProg.e-swt
>
> You can install a short-cut called "rune" like this:
>
> $ 0alias rune http://repo.roscidus.com/e/e-swt
> $ rune
> ?
>
> 0launch will download the e.jar package, the correct SWT libraries for
> the platform, and even Java itself if necessary.
>
> Each package name is a URI, which can be used to download a (signed)
> XML file describing available versions and their dependencies. For
> example, http://repo.roscidus.com/e/e-core contains:
>
>  <group license="OSI Approved :: Mozilla Public License (MPL)" main="rune">
>    <requires interface="http://repo.roscidus.com/java/openjdk-6-jre">
>      <environment insert="bin/" mode="replace" name="RUNE_JRE_BIN"/>
>    </requires>
>    <implementation
> id="sha1new=d0ecc18c74a4342bf2a08da8237aee11d9f32b27"
> released="2009-12-30" version="0.9.2-post1">
>      <archive href="http://repo.roscidus.com/e/e-core/E-core-0.9.2-post1.tar.bz2"
> size="2933851" type="application/x-bzip-compressed-tar"/>
>    </implementation>
>    <implementation
> id="sha1new=304c4433219b85bc7ebf7bc1d506ff2bc95aadb3"
> released="2010-03-31" version="0.9.2-post2">
>      <archive href="http://repo.roscidus.com/e/e-core/E-core-0.9.2-post2.tar.bz2"
> size="2946251" type="application/x-bzip-compressed-tar"/>
>    </implementation>
> [...]
>  </group>
>
> This says that there are two available versions of e-core (0.9.2-post1
> and 0.9.2-post2). Both depend on the OpenJDK JRE, and the rune script
> should be told where Java is through the $RUNE_JRE_BIN environment
> variable.
>
> 0launch downloads all the XML files, turns all the dependencies and
> constraints into a huge boolean expression and runs a SAT solver on it
> to select a set of compatible versions. Each package archive is then
> downloaded to its own directory and the main process is invoked.
>
> Normally, each component is told where to find its dependencies by
> setting environment variables, but in my experimental E installer we
> instead pass the selected versions to an E launcher script that
> creates E loaders instead.
>
>
> --
> Dr Thomas Leonard               ROX desktop / Zero Install
> GPG: 9242 9807 C985 3C07 44A6  8B9A AE07 8280 59A5 3CC1
> GPG: DA98 25AE CAD0 8975 7CDA  BD8E 0713 3F96 CA74 D8BA
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