On Mon, Jul 03, 2017 at 09:08:01PM +0200, Danny Milosavljevic wrote:
> * gnu/packages/netpbm.scm (netpbm): Add "patch-timestamps" phase.
> ---
>  gnu/packages/netpbm.scm | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/gnu/packages/netpbm.scm b/gnu/packages/netpbm.scm
> index cd0c3d950..6b97d7e06 100644
> --- a/gnu/packages/netpbm.scm
> +++ b/gnu/packages/netpbm.scm
> @@ -109,6 +109,11 @@
>     (arguments
>      `(#:phases
>        (modify-phases %standard-phases
> +       (add-after 'unpack 'patch-timestamps
> +         (lambda _
> +           (substitute* "buildtools/makepointerman"
> +             (("gmctime\\(\\)\\)") "Thu Apr 9 18:15:06 1998")
> +           #t))

Why this particular date instead of the Unix epoch?