On Thu, Sep 15, 2016 at 09:54:17PM +0000, ng0 wrote:
> This patch adds gloox, a dependency for 0ad needs for their "lobby"
> feature. Gentoo builds it with libressl without any patches applied,
> they had a long discussion and are very strict in their testing, looking
> at the tests comparing libressl and openssl builds I did there was no
> failure and if it won't work I'll notice with 0ad. I'm positive that it
> works.

> Subject: [PATCH] gnu: Add gloox.
> 
> * gnu/packages/messaging.scm (gloox): New variable.

> +    (inputs
> +     `(("libidn" ,libidn)
> +       ("gnutls" ,gnutls)
> +       ("libressl" ,libressl)
> +       ("zlib" ,zlib)))

I don't think this package is using libressl:

$ guix gc --references $(./pre-inst-env guix build gloox)
/gnu/store/3fhnmvbdxlsh64pr3zg4y74x3hlx33qw-libtasn1-4.8
/gnu/store/5992iq1v7arqa14ym3di58n4la0893nv-zlib-1.2.8
/gnu/store/6004mqdv1y8wc6zvg9yxy4bh652sgzms-gloox-1.0.17
/gnu/store/9nifwk709wajpyfwa0jzaa3p6mf10vxs-gcc-4.9.3-lib
/gnu/store/cdkrfbl10kbyyjjw3yfk9hckfw8n1b7g-gmp-6.1.0
/gnu/store/m9vxvhdj691bq1f85lpflvnhcvrdilih-glibc-2.23
/gnu/store/sbj1kgn8bs91bn7ba9qk4n3l2rr7dxbr-libidn-1.32
/gnu/store/ykzwykkvr2c80rw4l1qh3mvfdkl7jibi-bash-4.3.42
/gnu/store/yrl3c1mxqwcpppyh0sjlwn3sj2w5qj54-gnutls-3.5.2

The Debian package uses GnuTLS only:
https://packages.debian.org/source/sid/gloox