bug#34279: guix-install.sh: uses /bin/bash shebang

[Ludovic Courtès]

Ludovic Courtès <address@hidden> skribis:

> What about something like this:
>
> diff --git a/etc/guix-install.sh b/etc/guix-install.sh
> index 8eb5214049..dc8de2fe92 100755
> --- a/etc/guix-install.sh
> +++ b/etc/guix-install.sh
> @@ -1,4 +1,4 @@
> -#!/bin/bash
> +#!/bin/sh
>  # GNU Guix --- Functional package management for GNU
>  # Copyright © 2017 sharlatan <address@hidden>
>  # Copyright © 2018 Ricardo Wurmus <address@hidden>
> @@ -19,6 +19,13 @@
>  # You should have received a copy of the GNU General Public License
>  # along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
>  
> +# We require Bash but for portability we'd rather not use /bin/bash or
> +# /usr/bin/env in the shebang, hence this hack.
> +if [ "x$BASH_VERSION" = "x" ]
> +then
> +    exec bash "$0" "$@"
> +fi

Pushed as f5fdc54d3a0845d0590c181d3bd6016f22765431.

Ludo’.