Re: ihave and server upgrades

[Kjetil Torgrim Homme <kjetilho@xxxxxxxxxx>]

On Wed, 2009-01-21 at 13:54 +0100, Arnt Gulbrandsen wrote:
> I implemented ihave. It was easy. I ran into a strange point, though.
> 
>      require "ihave";
>      if ihave "foo" {
>          foo :dwimfactor 4;
>      }
> 
> There are three cases.
> 
> 1. Server supports foo at upload. Upload results in a managesieve error 
> such as "NO Maximum DWIM factor is 3". Fine.
> 
> 2. Server doesn't support foo, period. Upload succeeds, execution 
> succeeds. Fine.
> 
> 3. Server doesn't support foo at upload, but is later upgraded to a new 
> version which supports foo. Now the script fails when run. Not so fine. 
> It riles me that one thing can break because another is upgraded.
> 
> I don't suppose there's anything to do about it, but it still riles me.

good point.  one solution is to remove dead code (e.g, like Cyrus' "byte
compile") from the script at upload time.

-- 
regards,
Kjetil T.