On Mon, Apr 26, 2021 at 06:44:10PM +0200, Tobias Geerinckx-Rice wrote:
> How about this?

> From a9ef0c78c6aa60ab49f6fcf4fc6b43afdb6f0183 Mon Sep 17 00:00:00 2001
> From: Tobias Geerinckx-Rice <me@tobias.gr>
> Date: Mon, 26 Apr 2021 18:39:58 +0200
> Subject: [PATCH] gnu: webkitgtk: Always use at least 2 make jobs.
> 
> Fixes <http://issues.guix.gnu.org/47964>.
> 
> * gnu/packages/webkit.scm (webkitgtk)[arguments]: Use at least -j2.
> ---
>  gnu/packages/webkit.scm | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/gnu/packages/webkit.scm b/gnu/packages/webkit.scm
> index 083c8ccb08..74ffe92b84 100644
> --- a/gnu/packages/webkit.scm
> +++ b/gnu/packages/webkit.scm
> @@ -260,6 +260,9 @@ acceleration in mind, leveraging common 3D graphics APIs for best performance.")
>                            ;; now, we explicitly disable it to prevent an error
>                            ;; at configuration time.
>                            "-DUSE_GSTREAMER_GL=OFF")
> +       #:make-flags
> +       ;; Never build with unsupported -j1: https://issues.guix.gnu.org/47964#5
> +       (list "-j" (number->string (max 2 (parallel-job-count))))

LGTM