Re: [PATCH 6/9] gnu: fontforge: Make SVG builds reproducible.

[Eric Bavier]

On 2016-04-06 12:36, Leo Famulari wrote:
> On Tue, Apr 05, 2016 at 11:32:58PM -0500, address@hidden 
> wrote:
> > From: Eric Bavier <address@hidden>
> >
> > * gnu/packages/fontutils.scm (fontforge)[source]: Add snippet to clear
> >   timestamp in svg.c.
> > ---
> >  gnu/packages/fontutils.scm | 7 ++++++-
> >  1 file changed, 6 insertions(+), 1 deletion(-)
> >
> > diff --git a/gnu/packages/fontutils.scm b/gnu/packages/fontutils.scm
> > index 75edd55..5ca9835 100644
> > --- a/gnu/packages/fontutils.scm
> > +++ b/gnu/packages/fontutils.scm
> > @@ -512,7 +512,12 @@ definitions.")
> >                 ;; Make TTF builds bit-reproducible by clearing the 
> > timestamp
> >                 ;; that goes in TTF files.
> >                 (substitute* "fontforge/tottf.c"
> > -                 (("cvt_unix_to_1904\\(now") 
> > "cvt_unix_to_1904(0"))))))
> > +                 (("cvt_unix_to_1904\\(now") "cvt_unix_to_1904(0"))
> > +
> > +               ;; Make SVG builds bit-reproducible by clearing the 
> > timestamp
> > +               ;; that goes in SVG files.
> > +               (substitute* "fontforge/svg.c"
> > +                 (("ctime\\(&now\\)") "ctime(0)"))))))
>
> Could you use the value of the environment variable SOURCE_DATE_EPOCH
> instead of 0?

Probably.  But I'd save that for a later update, since it would be a 
much bigger change (that we could hopefully move upstream).

`~Eric