Looks like gtk2hs isn't working? $ sudo pacman -S gtk2hs warning: gtk2hs-0.10.1-3 is up to date -- reinstalling resolving dependencies... looking for inter-conflicts... Targets (1): gtk2hs-0.10.1-3 Total Download Size: 0.00 MB Total Installed Size: 50.01 MB Proceed with installation? [Y/n] checking package integrity... (1/1) checking for file conflicts [###########################################] 100% (1/1) upgrading gtk2hs [###########################################] 100% ghc-pkg: cannot find package glade ghc-pkg: cannot find package gconf ghc-pkg: cannot find package sourceview ghc-pkg: cannot find package gtksourceview2 ghc-pkg: cannot find package svgcairo ghc-pkg: cannot find package gtkglext ghc-pkg: cannot find package soegtk ghc-pkg: cannot find package gtk ghc-pkg: cannot find package cairo ghc-pkg: cannot find package glib building GHCi library /usr/lib/gtk2hs/HSglib.o... done. glib-0.10.1: missing id field glib-0.10.1: dependency "base-4.1.0.0" doesn't exist (use --force to override) Reading package info from "/usr/lib/gtk2hs/glib.package.conf" ... done. building GHCi library /usr/lib/gtk2hs/HScairo.o... done. cairo-0.10.1: missing id field cairo-0.10.1: dependency "base-4.1.0.0" doesn't exist (use --force to override) cairo-Reading package info from "/usr/lib/gtk2hs/cairo.package.conf" ... done. 0.10.1: dependency "mtl-1.1.0.2" doesn't exist (use --force to override) cairo-0.10.1: dependency "glib-0.10.1" doesn't exist (use --force to override) cairo-0.10.1: dependency "bytestring-0.9.1.4" doesn't exist (use --force to override) building GHCi library /usr/lib/gtk2hs/HSgtk.o... done. Reading package info from "/usr/lib/gtk2hs/gtk.package.conf" ... done. gtk-0.10.1: missing id field gtk-0.10.1: dependency "base-4.1.0.0" doesn't exist (use --force to override) gtk-0.10.1: dependency "mtl-1.1.0.2" doesn't exist (use --force to override) gtk-0.10.1: dependency "glib-0.10.1" doesn't exist (use --force to override) gtk-0.10.1: dependency "cairo-0.10.1" doesn't exist (use --force to override) gtk-0.10.1: dependency "containers-0.2.0.1" doesn't exist (use --force to override) gtk-0.10.1: dependency "array-0.2.0.0" doesn't exist (use --force to override) building GHCi library /usr/lib/gtk2hs/HSsoegtk.o... done. soegtk-0Reading package info from "/usr/lib/gtk2hs/soegtk.package.conf" ... done. .10.1: missing id field soegtk-0.10.1: dependency "base-4.1.0.0" doesn't exist (use --force to override) soegtk-0.10.1: dependency "mtl-1.1.0.2" doesn't exist (use --force to override) soegtk-0.10.1: dependency "gtk-0.10.1" doesn't exist (use --force to override) soegtk-0.10.1: dependency "cairo-0.10.1" doesn't exist (use --force to override) soegtk-0.10.1: dependency "old-time-1.0.0.2" doesn't exist (use --force to override) building GHCi library /usr/lib/gtk2hs/HSglade.o... done. glade-0.Reading package info from "/usr/lib/gtk2hs/glade.package.conf" ... done. 10.1: missing id field glade-0.10.1: dependency "base-4.1.0.0" doesn't exist (use --force to override) glade-0.10.1: dependency "gtk-0.10.1" doesn't exist (use --force to override) building GHCi library /usr/lib/gtk2hs/HSgconf.o... done. gconf-0.10.Reading package info from "/usr/lib/gtk2hs/gconf.package.conf" ... done. 1: missing id field gconf-0.10.1: dependency "base-4.1.0.0" doesn't exist (use --force to override) gconf-0.10.1: dependency "glib-0.10.1" doesn't exist (use --force to override) ghc-pkg: /usr/lib/gtk2hs/sourceview.package.conf: openFile: does not exist (No such file or directory) building GHCi library /usr/lib/gtk2hs/HSgtksourceview2.o... done. Reading package info from "/usr/lib/gtk2hs/sourceview.package.conf" ... Reading package info from "/usr/lib/gtk2hs/gtksourceview2.package.conf" ... done. gtksourceview2-0.10.1: missing id field gtksourceview2-0.10.1: dependency "base-4.1.0.0" doesn't exist (use --force to override) gtksourceview2-0.10.1: dependency "gtk-0.10.1" doesn't exist (use --force to override) building GHCi library /usr/lib/gtk2hs/HSsvgcairo.o... done. Reading package info from "/usr/lib/gtk2hs/svgcairo.package.conf" ... done. svgcairo-0.10.1: missing id field svgcairo-0.10.1: dependency "base-4.1.0.0" doesn't exist (use --force to override) svgcairo-0.10.1: dependency "mtl-1.1.0.2" doesn't exist (use --force to override) svgcairo-0.10.1: dependency "glib-0.10.1" doesn't exist (use --force to override) svgcairo-0.10.1: dependency "cairo-0.10.1" doesn't exist (use --force to override) building GHCi library /usr/lib/gtk2hs/HSgtkglext.o... done. gtkglextReading package info from "/usr/lib/gtk2hs/gtkglext.package.conf" ... done. -0.10.1: missing id field gtkglext-0.10.1: dependency "base-4.1.0.0" doesn't exist (use --force to override) gtkglext-0.10.1: dependency "gtk-0.10.1" doesn't exist (use --force to override) error: command failed to execute correctly