# NOTE: i have the command "pacman" aliased like this:
# 
#  alias pacman="sudo $HOME/bin/pacman3"
#

pacman -S freenx   
resolving dependencies... done.
looking for inter-conflicts... done.

Targets: nx-common-2.1.0-1 nxserver-2.1.0-1 netcat-1.10-5 tcl-8.4.14-1 expect-5.43.0-3 freenx-0.5.0-4

Total Package Size:   5.1 MB

Proceed with upgrade? [Y/n] y

# INSTALLING FREENX

pacman -Rs freenx 
checking dependencies... done.

Targets: freenx xorg-xauth expect tcl netcat nxserver libxrender renderproto libxaw libxp printproto libxpm libxmu libxt libsm xproto libice libxext xextproto libx11 
          bigreqsproto inputproto kbproto libxdmcp libxau nx-common alsa-lib audiofile libpng zlib libjpeg 

Do you want to remove these packages? [Y/n] n

# Now, let's try with pacman2

sudo /usr/bin/pacman -Rs freenx

Targets: freenx expect tcl netcat nxserver nx-common 

Do you want to remove these packages? [Y/n] n