Installation error

[syrok0010]

> go build
# pkg-config --cflags  -- glib-2.0 gobject-introspection-1.0
Package gobject-introspection-1.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gobject-introspection-1.0.pc'
to the PKG_CONFIG_PATH environment variable
Package 'gobject-introspection-1.0', required by 'virtual:world', not found
pkg-config: exit status 1

ArchLinux, go latest