bug#42155: --with-source=PACKAGE=REPLACEMENT-SOURCE doesn't work recursively

[Efraim Flashner]

On Wed, Jul 01, 2020 at 05:53:31PM +0100, pkill9 wrote:
> For example, `guix build --with-source=youtube-dl=blahblah mpv` builds
> mpv normally, after giving a message: guix build: warning:
> transformation 'with-source' had no effect on mpv@0.32.0
> 

From 'guix build --help:'
      --with-source=SOURCE
                         use SOURCE when building the corresponding package
      --with-input=PACKAGE=REPLACEMENT
                         replace dependency PACKAGE by REPLACEMENT

I think what you're looking for is more of:

guix build --no-grafts mpv --with-input=youtube-dl=$(guix build --no-grafts 
youtube-dl 
--with-source=https://github.com/ytdl-org/youtube-dl/releases/download/2020.06.16/youtube-dl-2020.06.16.tar.gz)

This didn't work for me though, I got:
guix build: error: 
/gnu/store/9ncacjhzwlchpr1y5fd8ahdq59dsya20-youtube-dl-2020.06.16: unknown 
package

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Efraim Flashner   <efraim@flashner.co.il>   אפרים פלשנר
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