Build fail: cannot use exprFn

[ghost]

% go get github.com/kisielk/errcheck

github.com/kisielk/errcheck

errcheck/main.go:196: cannot use exprFn (type func(ast.Expr, types.Type, interface {})) as type func(ast.Expr, types.Type, exact.Value) in field value

% go version
go version devel +58f8a30f5b78 Tue Apr 16 14:20:06 2013 -0700 linux/amd64

% uname -a
Linux Gothmaug 3.9.0-rc6 #1 SMP Mon Apr 8 14:40:41 EDT 2013 x86_64 AMD Phenom(tm) 9950 Quad-Core Processor AuthenticAMD GNU/Linux

[kisielk]

Ah, looks like the types API has changed.