Stefan Reichör <stefan@xsteve.at> writes:

> From 9a924507483674a3059b520b5e257304ebc97fce Mon Sep 17 00:00:00 2001
> From: Stefan Reichoer <stefan@xsteve.at>
> Date: Thu, 22 Dec 2016 22:35:05 +0100
> Subject: [PATCH] gnu: xonsh: Update to 0.5.0.
>
> * gnu/packages/shells.scm (xonsh): Update to 0.5.0.
> ---
>  gnu/packages/shells.scm | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/gnu/packages/shells.scm b/gnu/packages/shells.scm
> index 1931609..5fbac74 100644
> --- a/gnu/packages/shells.scm
> +++ b/gnu/packages/shells.scm
> @@ -4,6 +4,7 @@
>  ;;; Copyright © 2014 Kevin Lemonnier <lemonnierk@ulrar.net>
>  ;;; Copyright © 2015 Jeff Mickey <j@codemac.net>
>  ;;; Copyright © 2016 Tobias Geerinckx-Rice <me@tobias.gr>
> +;;; Copyright © 2016 Stefan Reichör <stefan@xsteve.at>
>  ;;;
>  ;;; This file is part of GNU Guix.
>  ;;;
> @@ -298,21 +299,21 @@ ksh, and tcsh.")
>  (define-public xonsh
>    (package
>      (name "xonsh")
> -    (version "0.4.7")
> +    (version "0.5.0")
>      (source
>        (origin
>          (method url-fetch)
>          (uri (pypi-uri "xonsh" version))
>          (sha256
>            (base32
> -            "04b0z41mxiwsp5rl21fzrixcdmx2kndjlh4gn3582qfga9hihf20"))
> +            "1iml0mrjl2j3dsan5app6am77bd59s855p6yy6505ljdh552mv01"))
>          (modules '((guix build utils)))
>          (snippet
>           `(begin
>              ;; Delete bundled ply.
>              (delete-file-recursively "xonsh/ply")
>              (substitute* '("setup.py")
> -              (("'xonsh\\.ply',") ""))
> +              (("'xonsh\\.ply\\.ply',") ""))
>              #t))))
>      (build-system python-build-system)
>      (arguments

Thanks for the update! Pushed as 572ee05c3134cf9408ba463c97fdbacb9a98f714.