On Thu, Nov 17, 2016 at 09:59:55AM +0100, Roel Janssen wrote:
> Dear Guix,
> 
> The new diff-format displayed when invoking @command{guix package
> --list-generations} prints a blank line after the initial generation,
> and then no blank lines in the diffs.
> 
> This patch adds that blank line to the diffs as well.
> 
> Before:
> ------------------------------------------------------------------------------
> Generation 1    Nov 15 2016 11:14:05
>   guix  0.10.0-1.97c8   out     /gnu/store/5ibkqq9...-guix-0.10.0-1.97c8
> 
> Generation 2    Nov 15 2016 12:06:32
>  + emacs        25.1    out     /gnu/store/sb2qfjr...-emacs-25.1
> Generation 4    Nov 15 2016 12:22:15
>  + guix 0.11.0-3.7ca3   out     /gnu/store/l99rkv2...-guix-0.11.0-3.7ca3
>  - guix 0.10.0-1.97c8   out     /gnu/store/5ibkqq9...-guix-0.10.0-1.97c8
> ------------------------------------------------------------------------------
> 
> After:
> ------------------------------------------------------------------------------
> Generation 1    Nov 15 2016 11:14:05
>   guix  0.10.0-1.97c8   out     /gnu/store/5ibkqq9...-guix-0.10.0-1.97c8
> 
> Generation 2    Nov 15 2016 12:06:32
>  + emacs        25.1    out     /gnu/store/sb2qfjr...-emacs-25.1
> 
> Generation 4    Nov 15 2016 12:22:15
>  + guix 0.11.0-3.7ca3   out     /gnu/store/l99rkv2...-guix-0.11.0-3.7ca3
>  - guix 0.10.0-1.97c8   out     /gnu/store/5ibkqq9...-guix-0.10.0-1.97c8
> ------------------------------------------------------------------------------
> 
> As you can see, it's only a small change, and so is the code change.
> Here's the patch:
> 
> >From a9b5305f8af51b88643986f99a8e94cad4d7a805 Mon Sep 17 00:00:00 2001
> From: Roel Janssen <roel@gnu.org>
> Date: Thu, 17 Nov 2016 09:46:15 +0100
> Subject: [PATCH] guix: Add whitespacing to --list-generations output.
> 
> ---
>  guix/ui.scm | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/guix/ui.scm b/guix/ui.scm
> index b9fbbfd..cafb3c6 100644
> --- a/guix/ui.scm
> +++ b/guix/ui.scm
> @@ -1094,7 +1094,8 @@ DURATION-RELATION with the current time."
>            (removed (lset-difference
>                      equal-entry? (list-entries old) (list-entries new))))
>        (for-each (cut display-entry <> "+") added)
> -      (for-each (cut display-entry <> "-") removed)))
> +      (for-each (cut display-entry <> "-") removed)
> +      (newline)))
>  
>    (display-diff profile gen1 gen2))
>  
> -- 
> 2.7.4
> 
> Kind regards,
> Roel Janssen
> 

That does make it easier to read

-- 
Efraim Flashner   <efraim@flashner.co.il>   אפרים פלשנר
GPG key = A28B F40C 3E55 1372 662D  14F7 41AA E7DC CA3D 8351
Confidentiality cannot be guaranteed on emails sent or received unencrypted