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Re: Guix home, guix system, channels, some noob questions

From: Daniel Meißner
Subject: Re: Guix home, guix system, channels, some noob questions
Date: Tue, 17 May 2022 09:26:56 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux)

Hi Guix,

Sébastien Rey-Coyrehourcq writes:

> Thanks,
> I made some test on my own to understand :
> 1 - Like you say, installing things with *guix install* is for current
> user (for example *firefox* and *sshpass*)
> 2 - Adding a package that don't exist to * myhome.scm* and reconfigure
> it with *guix home reconfigure* file will download a package (ex 
> "ncdu"), but this package doesn't appear into "guix package
> --list-installed"
> 3 - Adding a package that already exist for user (ex : firefox already
> installed with guix install) to *myhome.scm* doesn't reinstall
> package, that's normal.
> I don't understand the step 2, why *guix home* installed package
> (*ncdu* here) are not listed with *guix install --list-installed*, is
> there a difference ?

‘guix install’ installs into the current user’s profile which can be
found at ~/.guix-profile whereas ‘guix home’ creates an immutable
profile under ~/.guix-home/profile.¹  You can install the same package to
different profiles but of course they will be built only once (provided
you use the same Guix revision).  You can list the packages which are
installed in your Guix home profile via:

  guix package --profile="$HOME/.guix-home/profile" --list-installed


¹ IIUC the profile under ~/.guix-profile is also immutable (as are all
  profiles).  ‘guix install icecat’, for example, would create a new
  profile that contains all packages from the previous generation of
  ~/.guix-profile plus the packages icecat and then it would link the
  new profile to ~/.guix-profile.  In contrast you cannot do the same
  with ‘guix install’ for ~/.guix-home/profile.  Invoking

    guix install --profile="$HOME/.guix-home/profile" icecat

  to try to install icecat to the profile ~/.guix-home/profile yields:

    guix install: error: open-file: Read-only file system: 


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