Public SourceMage Discussion List

[Jeremy Blosser <jblosser-smgl AT firinn.org>]

On Oct 10, Maurizio Boriani [baux AT sourcemage.org] wrote:
> Hi all,
>    I'm working on guile 1.8 spell and it break 
> compatibility with 1.6 (some 'module' which works with
> 1.6 doesn't works with 1.8). So I think the best way to 
> spellify this is:
> 
>                                                             START
>          0) test if guile 1.6 is installed (if not go on
>             with 1.8 installation)                          END
>          1) if 1.6 is installed check if other modules are
>             installed. 
>          1.a) If not go on with 1.8 installation            END
>          1.b) If yes check for module versions compatible 
>               with 1.8 (obviusly other guile depentens 
>               spells should be modified).
>          2.a) If all are compatible go on with upgrade      END
>          2.b) If not, ask the user what to do
>          3.a) user choose to go on wiht guile 1.8 
>               installation                                  END
>          3.b) user choose to do nothing                     END
>              
> Guile modules should check for required guile versions
> (and try if possible to prefer 1.8)

I prefer the consistent approach... other spells that have this issue have
historically asked the user up front what version they want, with a warning
the new (or old) version may not work with some things.

That having been said, your proposed approach is like the above but with
additional work by you to verify when there actually is an issue and make
it even more seamless to the user, so I can't complain if you go ahead and
do it that way.

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