Improvements Eclipse Installation

[Toshio Kuratomi]

On Wed, Oct 26, 2011 at 11:20:46AM -0400, sami wagiaalla wrote:
> Hi,
> 
> The way we currently install Eclipse plugins in Fedora is incorrect and 
> somewhat fragile.
> 
> RPM places all the plugin artifacts in the proper directories. However 
> that does not update the eclipse metadata. This means that until the 
> next time eclipse starts it is unaware of the newly installed plugins.
> 
> Because the user would normally run Eclipse not as root Eclipse does not 
> have permission to write to the meta data files located in the 
> installation directory. It therefore creates a parallel version in the 
> user's home directory ~/.eclipse. This creates a fragile installation 
> and leads to a whole host of problems.
> 
> To improve this I have written apatch which runs the Eclipse reconciler 
> during rpm installation. The Eclipse reconciler is an Eclipse 
> application which goes through and checks the installation directories 
> and updates the eclipse metadata with any newly installed plugins.
> 
> To add support for this in your eclipse package you have to add the 
> following line to your rpm spec file:
> 
> %_eclipse_pkg [package name]
> 
> Here is an example from the eclipse-rse spec file for the
> eclipse-rse-sdk rpm:
> 
> %package   sdk
> [...]
> %_eclipse_pkg sdk
> 
> The above macro expands to the following:
> 
> %post sdk
> touch /var/run/eclipse/run-reconciler
> 
> %postun sdk
> touch /var/run/eclipse/run-reconciler
> 
> if [ $1 == 0 ]; then
>    eclipse-reconciler.sh
> fi
> 
> %posttrans sdk
> eclipse-reconciler.sh
> 
> I apologize if you have experienced instability in Eclipse installations 
> on rawhide, it is probably due to these changes. Please let me know if 
> you have any comments questions or suggestions.
> 
> I will be filing a request to update the Eclipse packaging guidelines.
> 
Yes please.  One note, I don't like macros that span multiple scriptlets.
Having a macro for each scriptlet (or forgoing a macro if the resulting code
is simple enough) seems to be about the right level of indirection.

-Toshio
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