Cannot upgrade PCManFM: libfm: /usr/include/libfm exists in filesystem

Question

Hey,
It's been a few days now that I am not able anymore to mount any usb stick or external hdd with PCManFM.
Maybe it's related to this news: "ConsoleKit replaced by logind" by if that's the case I don't know how to deal with it.
Anyway, I thought that a pacman -Syu could be a good start, I happily saw a upgrade of libfm & pcmanfm was available, but I can't get the upgrade done:
[david@laptop ~]$ sudo pacman -Syu
[sudo] password for david:
:: Synchronizing package databases...
core is up to date
extra                   1424.5 KiB   510K/s 00:03 [######################] 100%
community               1775.9 KiB   572K/s 00:03 [######################] 100%
multilib is up to date
:: Starting full system upgrade...
resolving dependencies...
looking for inter-conflicts...
Targets (2): libfm-1.1.0-1  pcmanfm-1.1.0-1
Total Download Size:    0.60 MiB
Total Installed Size:   4.86 MiB
Net Upgrade Size:       -1.16 MiB
Proceed with installation? [Y/n] y
:: Retrieving packages from community...
libfm-1.1.0-1-x86_64     455.3 KiB   304K/s 00:01 [######################] 100%
pcmanfm-1.1.0-1-x86_64   160.5 KiB   502K/s 00:00 [######################] 100%
(2/2) checking package integrity                   [######################] 100%
(2/2) loading package files                        [######################] 100%
(2/2) checking for file conflicts                  [######################] 100%
error: failed to commit transaction (conflicting files)
libfm: /usr/include/libfm exists in filesystem
Errors occurred, no packages were upgraded.
If it can be of anyhelp:
My .xinitrc:
#!/bin/sh
# ~/.xinitrc
# Executed by startx (run your window manager from here)
if [ -d /etc/X11/xinit/xinitrc.d ]; then
  for f in /etc/X11/xinit/xinitrc.d/*; do
    [ -x "$f" ] && . "$f"
  done
  unset f
fi
exec openbox-session
# exec gnome-session
# exec startkde
# exec startxfce4
# ...or the Window Manager of your choice
Thank you !

Answer 1

Every installed package provides /var/lib/pacman/local/$package-$version/files file that contains metadata about this package. If this file gets corrupted - is empty or missing - it results in "file exists in filesystem" errors when trying to update the package. Such an error usually concerns only one package and instead of manually renaming and later removing all the files that belong to the package in question, you can run pacman -S --force $package to force pacman to overwrite these files.
Do not run pacman -Syu --force.
https://wiki.archlinux.org/index.php/Pa … stem.22.21