Subject: [bug#61674] [PATCH 1/4] gnu: Add calcmysky.

From: Leo Famulari <[email-masked]>
Date: Sat, 25 Feb 2023 21:55:27 -0500

On Sun, Feb 26, 2023 at 12:44:03AM +0000, Sharlatan Hellseher wrote:
> * gnu/packages/astronomy.scm (calcmysky, calcmysky-qt5): New variables.

Thanks for these patches!

> +  #:use-module ((guix build utils) #:select (alist-replace))
[...]
> +(define-public calcmysky-qt5
> +  (package
> +    (inherit calcmysky)
> +    (name "calcmysky-qt5")
> +    (arguments
> +     (list #:configure-flags
> +           #~(list "-DQT_VERSION=5"
> +                   "-DCMAKE_CXX_FLAGS=-fPIC")))
> +    (inputs
> +     (alist-replace "qtbase" (list qtbase-5)
> +                    (package-inputs calcmysky)))

Can you try rewriting this using modify-inputs, rather than
alist-replace?

https://guix.gnu.org/manual/devel/en/html_node/Defining-Package-Variants.html#Defining-Package-Variants

Feel free to ask for help if you get stuck.