After upgraded to 24.05, I encountered exactly this error:
I tried installing kdenlive with pkgs.kdePackages.kdenlive in environment.systemPackages as suggested by the author. However I oncountered another error and the software cannot be launched.
Could not detect package type, probably default? App dir is "/nix/store/yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy-kdenlive-24.02.2/bin"
No LADSPA plugins were found!
Check your LADSPA_PATH environment variable.
profilePath from KdenliveSetting::mltPath: "/nix/store/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-mlt-7.24.0/share/mlt-7/profiles"
meltPath from KdenliveSetting::meltPath: "/nix/store/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-mlt-7.24.0/bin/melt"
plugin not available: "region"
plugin not available: "region"
Empty metadata for "glsl.manager"
Empty metadata for "telecide"
plugin not available: "avfilter.acompressor"
plugin not available: "avfilter.aecho"
plugin not available: "avfilter.agate"
plugin not available: "avfilter.atadenoise"
plugin not available: "avfilter.bs2b"
plugin not available: "avfilter.bwdif"
plugin not available: "avfilter.deblock"
plugin not available: "avfilter.dedot"
plugin not available: "avfilter.deflate"
plugin not available: "avfilter.derain"
plugin not available: "avfilter.doubleweave"
plugin not available: "avfilter.field"
plugin not available: "avfilter.framestep"
plugin not available: "avfilter.fspp"
plugin not available: "avfilter.graphmonitor"
plugin not available: "avfilter.hqdn3d"
plugin not available: "avfilter.inflate"
plugin not available: "avfilter.lagfun"
plugin not available: "avfilter.loudnorm"
plugin not available: "avfilter.random"
plugin not available: "avfilter.removegrain"
plugin not available: "avfilter.separatefields"
plugin not available: "avfilter.shuffleplanes"
plugin not available: "avfilter.sofalizer"
plugin not available: "avfilter.sr"
plugin not available: "avfilter.tmix"
plugin not available: "avfilter.w3fdif"
plugin not available: "avfilter.weave"
plugin not available: "avfilter.yadif"
plugin not available: "frei0r.baltan"
plugin not available: "frei0r.bgsubtract0r"
plugin not available: "frei0r.bigsh0t_eq_mask"
plugin not available: "frei0r.bigsh0t_eq_to_rect"
plugin not available: "frei0r.bigsh0t_eq_to_stereo"
plugin not available: "frei0r.bigsh0t_hemi_to_eq"
plugin not available: "frei0r.bigsh0t_rect_to_eq"
plugin not available: "frei0r.bigsh0t_stabilize_360"
plugin not available: "frei0r.bigsh0t_transform_360"
plugin not available: "frei0r.delay0r"
plugin not available: "frei0r.delaygrab"
plugin not available: "frei0r.lightgraffiti"
plugin not available: "frei0r.lightgraffiti"
plugin not available: "frei0r.rgbparade"
plugin not available: "frei0r.scale0tilt"
plugin not available: "frei0r.tehRoxx0r"
plugin not available: "frei0r.vectorscope"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa.9354877"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "movit.unsharp_mask"
plugin not available: "timewarp"
plugin not available: "avfilter.acompressor"
plugin not available: "avfilter.aecho"
plugin not available: "avfilter.agate"
plugin not available: "avfilter.atadenoise"
plugin not available: "avfilter.bs2b"
plugin not available: "avfilter.bwdif"
plugin not available: "avfilter.deblock"
plugin not available: "avfilter.dedot"
plugin not available: "avfilter.deflate"
plugin not available: "avfilter.derain"
plugin not available: "avfilter.doubleweave"
plugin not available: "avfilter.field"
plugin not available: "avfilter.framestep"
plugin not available: "avfilter.fspp"
plugin not available: "avfilter.graphmonitor"
plugin not available: "avfilter.hqdn3d"
plugin not available: "avfilter.inflate"
plugin not available: "avfilter.lagfun"
plugin not available: "avfilter.loudnorm"
plugin not available: "avfilter.random"
plugin not available: "avfilter.removegrain"
plugin not available: "avfilter.separatefields"
plugin not available: "avfilter.shuffleplanes"
plugin not available: "avfilter.sofalizer"
plugin not available: "avfilter.sr"
plugin not available: "avfilter.tmix"
plugin not available: "avfilter.w3fdif"
plugin not available: "avfilter.weave"
plugin not available: "avfilter.yadif"
plugin not available: "frei0r.baltan"
plugin not available: "frei0r.bgsubtract0r"
plugin not available: "frei0r.bigsh0t_eq_mask"
plugin not available: "frei0r.bigsh0t_eq_to_rect"
plugin not available: "frei0r.bigsh0t_eq_to_stereo"
plugin not available: "frei0r.bigsh0t_hemi_to_eq"
plugin not available: "frei0r.bigsh0t_rect_to_eq"
plugin not available: "frei0r.bigsh0t_stabilize_360"
plugin not available: "frei0r.bigsh0t_transform_360"
plugin not available: "frei0r.delay0r"
plugin not available: "frei0r.delaygrab"
plugin not available: "frei0r.lightgraffiti"
plugin not available: "frei0r.lightgraffiti"
plugin not available: "frei0r.rgbparade"
plugin not available: "frei0r.scale0tilt"
plugin not available: "frei0r.tehRoxx0r"
plugin not available: "frei0r.vectorscope"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa.9354877"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "ladspa"
plugin not available: "movit.unsharp_mask"
plugin not available: "timewarp"
=== /// CANNOT ACCESS SPEECH DICTIONARIES FOLDER
qrc:/qml/kdenliveclipmonitor.qml: module "org.kde.desktop" is not installed
zsh: segmentation fault (core dumped) kdenlive
I don’t have plasma6 installed because the program.ssh.askPassword option has conflicting definition with gnome seahorse.