bug#54400: Emacs error in Ubuntu

[zimoun <zimon.toutoune@gmail.com>]

Hi Liliana.

On Wed, 16 Mar 2022 at 09:02, Liliana Marie Prikler <liliana.prikler@ist.tugraz.at> wrote:

> --8<---------------cut here---------------start------------->8---
> $ ldd $GUIX_ENVIRONMENT/bin/.emacs-27.2-real | grep lzma
> 	liblzma.so.5 => /gnu/store/c8isj4jq6knv0icfgr43di6q3nvdzkx7-xz-5.2.5/lib/liblzma.so.5 (0x00007f7919fee000)
> --8<---------------cut here---------------end--------------->8---
>
> where xz is one of those magic libraries you'd expect to exist in any
> distro.  However,
>
> --8<---------------cut here---------------start------------->8---
> $ guix show emacs | recsel -p dependencies
> dependencies: acl@2.3.1 alsa-lib@1.2.4 cairo@1.16.0 coreutils@8.32
> + dbus@1.12.20 ghostscript@9.54.0 giflib@5.2.1 gmp@6.2.1 gnutls@3.7.2 gpm@1.20.7
> + gtk+@3.24.30 gzip@1.10 harfbuzz@2.8.2 jansson@2.13.1 libice@1.0.10
> + libjpeg-turbo@2.0.5 libotf@0.9.16 libpng@1.6.37 librsvg@2.50.7 libsm@1.2.3
> + libtiff@4.3.0 libx11@1.7.3.1 libxft@2.3.3 libxml2@2.9.12 libxpm@3.5.13
> + m17n-lib@1.8.0 mailutils@3.14 ncurses@6.2.20210619 pango@1.48.10
> + pkg-config@0.29.2 poppler@21.07.0 texinfo@6.7 zlib@1.2.11
> --8<---------------cut here---------------end--------------->8---
>
> If at all, xz is included as implicit input to unpack Emacs!  We should
> probably add it as explicit input instead.

--8<---------------cut here---------------start------------->8---
$ guix graph --path emacs xz
emacs@27.2
libxml2@2.9.12
xz@5.2.5
--8<---------------cut here---------------end--------------->8---

Note that

--8<---------------cut here---------------start------------->8---
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnu/emacs/emacs-"
                                  version ".tar.xz"))
--8<---------------cut here---------------end--------------->8---

but I do not see ’xz’ in the implicit inputs; only emacs-minimal.  Quick
look, maybe I miss it.

Well, indeed, something seems unexpected if the Emacs binary is linked
to liblzma and this liblzma is not an explicit inputs but instead comes
from a reference to another inputs.


Cheers,
simon