On Mon, Jul 03, 2017 at 09:16:38PM +0200, Danny Milosavljevic wrote:
> * gnu/packages/netpbm.scm (netpbm)[source]: Remove timestamps.
> ---
>  gnu/packages/netpbm.scm | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/gnu/packages/netpbm.scm b/gnu/packages/netpbm.scm
> index cd0c3d950..652c23aed 100644
> --- a/gnu/packages/netpbm.scm
> +++ b/gnu/packages/netpbm.scm
> @@ -87,6 +87,9 @@
>                  (drop "ppmtopjxl" in "converter/ppm")
>  
>                  ;; Remove timestamps from the generated code.
> +                (substitute* "buildtools/makepointerman"
> +                  (("gmctime[(][)]")
> +                   "\"Thu Jan 1 00:00:00 1970\""))

I'm not sure what's going on with core-updates: the last evaluation was
aborted.

So, assuming that you can build groff on core-updates with this change
before Hydra builds netpbm on core-updates, LGTM. Once we build
core-updates to that point, we should wait for the next core-updates
cycle.