[asdf-devel] :logical-hostname

[james anderson]

On 2010-03-29, at 23:00 , Juan Jose Garcia-Ripoll wrote:

> One of the common problems that ASDF users faced when introducing  
> the new binary location system is finding out where things reside.
>
> Another problem we will eventually find is locating the resources  
> associated to an ASDF system which has been replaced by a  
> precompiled version.
>
> In general it would be desirable for a system to be able to locate  
> its resources (additional files, icons, bitmaps, etc) using logical  
> pathnames.
>

if the "pure" system definition proposal finds adoption, then  
something of this order will be necessary.
in which case, the option should support a full logical host mapping.

if purity is not an issue, a logical pathname value for the pathname  
argument already allows for subsequent remapping, but that does  
require that the host be defined in addition to the system.
if a non-root location suffices, it is also possible to support  
remapping by placing logical roots in the registry list.

> For that purpose I have coded a small patch that adds a new  
> keyword, :logical-host, to DEFSYSTEM. The keyword defines a logical  
> pathname translation from "**;*.*.*" to "path/to/asdf/or/pathname/ 
> argument/**/*.*"
>
> This way we may have
>
> (defsystem :cl-unicode
>   :logical-host "cl-unicode"
>   ...)
>
> and in the sources load the databases such as "cl-unicode:uppercase- 
> table.dat"
>
> https://bugs.launchpad.net/asdf/+bug/551222
>
> -- 
> Instituto de Física Fundamental, CSIC
> c/ Serrano, 113b, Madrid 28006 (Spain)
> http://tream.dreamhosters.com
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