install error

[donpdonp]

while trying to install httplib,go, i get

$ goinstall github.com/hoisie/httplib.go
goinstall: === cd /home/donp/src/go/repo//src/pkg/github.com/hoisie/httplib.go; gomake -f- install
8g -o go.8 httplib.go
httplib.go:108: cannot use headers (type map[string] string) as type http.Header in assignment
httplib.go:131: cannot use map literal (type map[string] string) as type http.Header in assignment
httplib.go:139: cannot use map literal (type map[string] string) as type http.Header in assignment
httplib.go:147: cannot use map literal (type map[string] string) as type http.Header in assignment
httplib.go:155: cannot use map literal (type map[string] string) as type http.Header in assignment
httplib.go:198: cannot use value (type string) as type []string in assignment
make: *** [go.8] Error 1
--- exit status 2
goinstall: installing github.com/hoisie/httplib.go: running gomake: exit status 2

$ 8g -V
8g version release.2011-02-24 7583+