Nixpkgs: Baloo on plasma5 indexes /nix and exclude list is not preserved

[x61s]

Default KDE installation has Search indexer enabled by default. Every time I rebuild my installation, Baloo (indexer) trying to index the /nix directory. Every time I add /nix to exclude list in File Search - System Settings, the next reboot completely wipes this exclude list.

The problem: it works even on Battery power and takes 12-35% CPU load on T580.

Indexer may be useful, but /nix directory must be excluded by default and this settings must be permanent for KDE.

[worldofpeace]

I absolutely agree with you @x61s. This probably makes baloo supeerrrrrr sloooowwww

[worldofpeace]

cc @ttuegel

I kinda have a disposition to block on this, it's probably really bad for IO on systems without an ssd.

[x61s]

Thanks!

[ttuegel]

@x61s Can you please check the contents of $HOME/.config/baloorc? After rebooting, I see /nix is removed from the GUI, but it is still present in $HOME/.config/baloorc. The strange thing is that I have other paths excluded, too, and they _do_ remain in both places.

@worldofpeace The only thing I can offer to fix this right now is to disable Baloo.

[ttuegel]

It looks like this bug: https://bugs.kde.org/show_bug.cgi?id=417127

I tried commands:

balooctl config add excludeFolders /nix/
balooctl config ls excludeFolders

and this showed that the configuration was not updated.

I don't know why we don't have the patch for this issue.

[ttuegel]

Excluding folders does work if I pick a folder inside $HOME. I suspect that Baloo is ignoring excluded folders which are not in any included folder. I can't find the code in Baloo that would do this, though, because the whole codebase is a mess of redirections. Actually, Baloo reports for me that it is not indexing files in /nix.

@x61s Could you run this command and report its output?

balooctl config ls includeFolders

[x61s]

@x61s Can you please check the contents of $HOME/.config/baloorc? After rebooting, I see /nix is removed from the GUI, but it is still present in $HOME/.config/baloorc. The strange thing is that I have other paths excluded, too, and they _do_ remain in both places.

@worldofpeace The only thing I can offer to fix this right now is to disable Baloo.

I have baloofilerc only contents:

[Basic Settings]
Indexing-Enabled=true

[General]
dbVersion=2
exclude filters=*~,*.part,*.o,*.la,*.lo,*.loT,*.moc,moc_*.cpp,qrc_*.cpp,ui_*.h,cmake_install.cmake,CMakeCache.txt,CTestTestfile.cmake,libtool,config.status,confdefs.h,autom4te,conftest,confstat,Makefile.am,*.gcode,*.csproj,*.m4,*.rej,*.gmo,*.pc,*.omf,*.aux,*.tmp,*.po,*.vm*,*.nvram,*.rcore,*.swap,lzo,litmain.sh,*.orig,.histfile.*,.xsession-errors*,*.map,*.so,*.a,*.db,*.qrc,*.ini,*.init,*.img,*.vdi,*.vbox*,vbox.log,*.qcow2,*.vmdk,*.vhd,*.vhdx,*.sql,*.sql.gz,*.class,*.pyc,*.pyo,*.elc,*.qmlc,*.jsc,*.fastq,*.fq,*.gb,*.fasta,*.fna,*.gbff,*.faa,po,CVS,.svn,.git,_darcs,.bzr,.hg,CMakeFiles,CMakeTmp,CMakeTmpQmake,.moc,.obj,.pch,.uic,.npm,.yarn,.yarn-cache,__pycache__,node_modules,node_packages,nbproject,core-dumps,lost+found
exclude filters version=5
exclude folders[$e]=/nix/
first run=false
folders[$e]=$HOME/
only basic indexing=true

[ttuegel]

Due to this line, Baloo should only look for files in $HOME/:

folders[$e]=$HOME/

If I run balooctl status on files in the Nix store, it reports that indexing is disabled:

$ balooctl status $(readlink $(which balooctl))
File: /nix/store/kcr07bqv7sqm99p2nm9ldjl8s9m6k4kn-baloo-5.73.0-bin/bin/balooctl
Basic Indexing: Disabled

As far as I can tell, Baloo is not indexing the Nix store.

[x61s]

@ttuegel

As far as I can tell, Baloo is not indexing the Nix store.

Is there a way to find where Baloo is indexing in real time? I have 10-15 git repositories cloned and nothing more on my laptop right now, but indexing was several hours until I interrupt it buy changing settings in KDE System settings menu.

[ttuegel]

Is there a way to find where Baloo is indexing in real time?

balooctl monitor should do it.

[x61s]

Great! Thanks!

[x61s]

FYI
It happened again and now I run balooctl monitor and it seems the problem has other cause then I thought. Baloo is trying to index one of my projects and there is an python virutal env directories inside. Look.

.

Two items cycled. Koversation is not running. And project has no opened files.

When I change something in KDE Search menu and pressing Apply this activity stops for a while. Does not matter what I do, any changes.