Re: [PATCH] gnu: mpop: Update to 1.2.6.

[Leo Famulari]

On Thu, Nov 17, 2016 at 09:46:38PM +0100, Marius Bakke wrote:
> Arun Isaac <address@hidden> writes:
> > Marius Bakke writes:
> >
> >> Thanks for this. I'm unable to download the new version with
> >> `./pre-inst-env guix build mpop`;
> >
> > Not sure what the problem is. I was able to build mpop successfully on
> > my system. But, I did download manually with `guix download'
> > first. Perhaps the build used that downloaded source tarball.

I fixed the URL and made it use our SourceForge mirror in commit
5837e6993.

> Yes, if the hash already exists in the store, it will be used instead of
> downloading.  This has caused some confusion before :-)

As Marius hints at, using `guix download` to get source code while
writing a package masks errors in the package's URL. You should always
download the source code "out of band" with wget, curl, a web browser,
etc, and then use `guix hash` to calculate the hash.

That way, you can be sure the package works.

Also, you don't leak information (via `guix download`'s network
signature) to potentially hostile servers that you are packaging
software for Guix.

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