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Re: Some utility functions

From: Ludovic Courtès
Subject: Re: Some utility functions
Date: Tue, 08 Jan 2019 17:30:40 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux)


Gábor Boskovits <address@hidden> skribis:

> Ludovic Courtès <address@hidden> ezt írta (időpont: 2019. jan. 5., Szo, 
> 22:30):
>> Hi Gábor,
>> Gábor Boskovits <address@hidden> skribis:
>> > I am not sure if I am duplicating functionality here, and also where
>> > these should belong, so I will send them here for discussion.
>> Thanks for sharing!  As Alex notes, some of these procedures are
>> more or less available in (guix build utils):
>> > (define (rm-recursive dir)
>> delete-file-recursively
>> > (define (check-header file header)
>> file-header-match
>> > (define (reset-zip-timestamps dir)
>> >   "Resets the timestamps of all zip achives under DIR."
>> >   (for-each repack-zip
>> >           (find-files dir ".*.(zip|jar|diz)$")))
>> That we don’t have (there’s ‘reset-gzip-timestamp’, with a ‘g’.)
>> How do we deal with that currently in Java packages?
> We have a phase defiined in the ant build system code, that does just that.
> I was thinking about to moving it to java utils or to a more general
> utils module.
> where we don't yet have ant build system. I don't know if other ecosystems
> would benefit from that or not.

I don’t think we have packages generating zip files outside of Java.

It would be fun to implement ‘reset-zip-timestamps’ entirely in Scheme
(without the unpack/repack phase).


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