Marius Bakke writes: > Danny Milosavljevic writes: > >> Hi Marius, >> Hi 宋文武, >> >> On Sat, 20 May 2017 01:05:22 +0200 >> Marius Bakke wrote: >> >>> Danny Milosavljevic writes: >>> >>> > these are two patches I propose we add in order to add >>> > desktop-file-utils to all gtk applications. This means that the >>> > profile hook would pick up the desktop files (as soon as possible). >>> >>> So if I read (guix profiles) correctly, the hook only runs when >>> 'desktop-file-utils' is referenced. Would checking for a gtk reference >>> as well not achieve the same effect? Or is that too expensive? >> >> That would probably work as well. >> >> But the idea is KDE would eventually use the XDG desktop cache, too (maybe it already does - no idea). Any other desktop environments that don't reinvent the wheel in that regard would use desktop-file-utils as well - and that's the package that actually contains the "update-desktop-database" executable for updating the XDG desktop cache. >> >> Right now the "xdg-desktop-database" profile hook doesn't need its own magical packages but it just uses the existing desktop-file-utils reference for actually updating the desktop database. > > IIUC, the idea is to run the hook every time a package with a ".desktop" > file has changed. Even if we propagate "desktop-file-utils" from say, > GTK+ and Qt, it won't catch some cases where we add the ".desktop" file > manually such as "rxvt-unicode". A dirty workaround could be to add a reference to some dummy store item in the 'patch-dot-desktop-files' phase. Maybe a hidden "mimeinfo-helper" package and inject a reference to it directly in the '.desktop' files. And then test for that in the profile hook. Sounds a bit hacky, but should not cause any compatibility issues, and avoids the artificial 'desktop-file-utils' reference at 122MiB.