Ludovic Courtès <l...@gnu.org> skribis:
> Apart from LibreOffice, I found that ‘share/mime/packages’ is provided
> by at least: hugin, gcr, fontforge. Most GUI packages don’t have it.
> So in practice, we’re often rebuilding the exact same database.
On closer inspection, the time-consuming bit is processing
‘share/mime/packages/freedesktop.org.xml’ (from ‘shared-mime-info’),
which is quite large and leads to the creation of hundreds of file. We
end up re-processing it every time. This is particularly wasteful
because the ‘shared-mime-info’ package already contains the result of
applying ‘update-mime-database’ to itself.
Unfortunately, AIUI,
update-mime-database(X ∪ Y) ≠ update-mime-database(X) ∪
update-mime-database(Y)
(For example, the files
‘share/mime/{globs,magic,XMLnamespaces,subclasses,aliases,types,generic-icons,icons,treemagic,mime.cache}’
concatenate info from X and Y.)
So it would seem we cannot simply used the pre-built database from
‘shared-mime-info’ and merge it with that of the other packages, at
least not without changing ‘update-mime-database’ or re-implementing
parts of it on our side.
Ludo’.
