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From: Divan Santana <divan@santanas.co.za>
Subject: Re: Some general guix questions
Date: Wed, 09 Jan 2019 09:51:24 +0200
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To: Pierre Neidhardt <mail@ambrevar.xyz>
Cc: help-guix@gnu.org

Pierre Neidhardt <mail@ambrevar.xyz> writes:

> 1. System-wide installation means packages are readily available to all users,
>    which can be nice, but users then don't have the freedom to remove them.
>    For maximal flexibility, it's often best to leave system-wide packages to the
>    bare minimum and let users choose what they want.
>
>    If you are preparing a distribution for an organization, requirements could
>    be different.  Your mileage may vary.
>
> 2. I also combine emacs-guix and helm-system-packages a lot ;)
>    My personal take at this issue is to generate the manifest from all installed
>    packages with the following shell script:
>
> --8<---------------cut here---------------start------------->8---
>  	cat<<EOF>"$PKG_ROOT/guix"
> (specifications->manifest
>  '(
> EOF
>
> 	guix package -I | awk '{printf("\"%s", $1); if($3!="out") {printf("%s", ":" $3)}; print "\""}' | LC_ALL=C sort >>"$PKG_ROOT/guix"
> 	echo "))" >>"$PKG_ROOT/guix"
> --8<---------------cut here---------------end--------------->8---
>
>   There might be better ways to do this.

Brilliant.  Thanks Pierre.