David Larsson 写道：
> (git-reference (url ...) (commit ...) (recursive? #t))

Also: don't forget to change the hash when changing fields like 
RECURSIVE? which have no effect on the store file name, or Guix 
will happily return the non-recursive checkout.

This is because hash + name, not the URL or fetch options, 
uniquely identify the source.

Kind regards,

T G-R