I was originally looking at this as a lein-integrated subset of jark, but I 
see there are different use cases now.  Thanks.  :)

On Monday, April 23, 2012 11:13:45 PM UTC-5, Shantanu Kumar wrote:
>
>
>
> On Apr 24, 6:05 am, Daniel <doubleagen...@gmail.com> wrote: 
> > I'm curious.  How does this differ from Jark?    
> http://icylisper.in/jark/scripting.html 
>
> Jark is a client (written in Ocaml) that starts up/shuts down/talks to 
> resident JVMs (with additional Jark-specific code) via the nREPL 
> protocol. It is possible to have multiple scripts in parallel 
> targeting the same JVM. The current differences with lein-exec (AFAIK) 
> are below: 
>
> 1. Jark client is a binary that talks to a JVM via the nREPL protocol. 
> lein-exec currently always starts a new JVM locally, which is slower 
> than running the Jark client. 
>
> 2. Jark can connect to a JVM running on another host. This may be very 
> helpful for debugging. lein-exec works on a *new* local JVM with no 
> remote debugging capabilities. 
>
> 3. The JVM, once started has no way to change the current directory. 
> Consequentially, Jark's resident JVM may see one directory as `pwd` 
> and the client may see another. This locality problem does not exist 
> with lein-exec. 
>
> 4. Jark's resident JVM may have been started as a different user 
> compared to the client. Hence you cannot `sudo` from the client to 
> carry out things in the JVM. With lein-exec it is valid to escalate 
> permissions by using "sudo scriptname.clj" or "sudo lein2 exec 
> scriptname.clj". 
>
> 5. Jark is also a server manager – you can specify how many resident 
> JVMs you want to have started and with which versions of Clojure. lein- 
> exec runs only with the JVM that was started by Leiningen. 
>
> 6. Jark's resident JVM currently does not include pomegranate, hence 
> it cannot dynamically pull dependencies from Clojars or any Maven 
> repo. lein-exec has this capability today. 
>
> Hope that helps. 
>
> Shantanu

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