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nixos/x11: Be more defensive when removing XCOMPOSECACHE

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Stefan Frijters 2020-10-01 13:13:44 +02:00
parent ee713d36bc
commit 580cf02c19
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1 changed files with 5 additions and 1 deletions
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6
nixos/modules/services/x11/display-managers/default.nix
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@ -70,8 +70,12 @@ let
# Speed up application start by 50-150ms according to
# http://kdemonkey.blogspot.nl/2008/04/magic-trick.html
compose_cache="''${XCOMPOSECACHE:-$HOME/.compose-cache}"
rm -rf "$compose_cache"
mkdir -p "$compose_cache"
# To avoid accidentally deleting a wrongly set up XCOMPOSECACHE directory,
# defensively try to delete cache *files* only, following the file format specified in
# https://gitlab.freedesktop.org/xorg/lib/libx11/-/blob/master/modules/im/ximcp/imLcIm.c#L353-358
# sprintf (*res, "%s/%c%d_%03x_%08x_%08x", dir, _XimGetMyEndian(), XIM_CACHE_VERSION, (unsigned int)sizeof (DefTree), hash, hash2);
${pkgs.findutils}/bin/find "$compose_cache" -maxdepth 1 -regextype posix-extended -regex '.*/[Bl][0-9]+_[0-9a-f]{3}_[0-9a-f]{8}_[0-9a-f]{8}' -delete
unset compose_cache
# Work around KDE errors when a user first logs in and