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Subject: bug#40872: First installed package on guix system is not instantly usable
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Hi!

I have a guix system and my user account has no package installed yet. =
After installing the first package =E2=80=93 git-minimal in my case =E2=80=
=93 this message is printed and I get this error when trying to use the =
new command:

building profile with 1 package...
Hinweis: Vielleicht m=C3=B6chten Sie die n=C3=B6tigen Umgebungsvariablen =
festlegen, indem Sie dies ausf=C3=BChren:

     GUIX_PROFILE=3D"/home/stefan/.guix-profile"
     . "$GUIX_PROFILE/etc/profile"

Sie k=C3=B6nnen sie auch mit `guix package --search-paths -p =
"/home/stefan/.guix-profile"' nachlesen.

stefan@guix ~$ git show
-bash: git: Kommando nicht gefunden.

The problem is that without a single package installed there is no user =
profile-link present:

stefan@guix ~$ echo $PATH
=
/run/setuid-programs:/home/stefan/.config/guix/current/bin:/run/current-sy=
stem/profile/bin:/run/current-system/profile/sbin

This is of course easily solved by either following the hint or a logout =
and login:

stefan@guix ~$ exit
Abgemeldet
Connection to raspberry closed.
Computer:~ stefan$ ssh stefan@raspberry
Last login: Sun Apr 26 13:59:31 2020=20
stefan@guix ~$ echo $PATH
=
/run/setuid-programs:/home/stefan/.config/guix/current/bin:/home/stefan/.g=
uix-profile/bin:/run/current-system/profile/bin:/run/current-system/profil=
e/sbin

However, this gives a bad first impression to users. Moreover users may =
think that a logout/login cycle or manually following the hint could be =
necessary after each package installation. They may get annoyed by this.

Bye

Stefan

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Stefan <stefan-guix@HIDDEN>
Subject: bug#40872: Acknowledgement (First installed package on guix
 system is not instantly usable)
Message-ID: <handler.40872.B.158791697512935.ack <at> debbugs.gnu.org>
References: <73CADE52-3A2F-433F-A2FD-491AC81C7A8A@HIDDEN>
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Date: Sun, 26 Apr 2020 16:03:01 +0000

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Message sent to bug-guix@HIDDEN:

Subject: bug#40872: First installed package on guix system is not instantly usable
Resent-From: Marius Bakke <mbakke@HIDDEN>
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--=-=-=
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Stefan <stefan-guix@HIDDEN> writes:

> Hi!
>
> I have a guix system and my user account has no package installed yet. Af=
ter installing the first package =E2=80=93 git-minimal in my case =E2=80=93=
 this message is printed and I get this error when trying to use the new co=
mmand:
>
> building profile with 1 package...
> Hinweis: Vielleicht m=C3=B6chten Sie die n=C3=B6tigen Umgebungsvariablen =
festlegen, indem Sie dies ausf=C3=BChren:
>
>      GUIX_PROFILE=3D"/home/stefan/.guix-profile"
>      . "$GUIX_PROFILE/etc/profile"
>
> Sie k=C3=B6nnen sie auch mit `guix package --search-paths -p "/home/stefa=
n/.guix-profile"' nachlesen.
>
> stefan@guix ~$ git show
> -bash: git: Kommando nicht gefunden.
>
>
> The problem is that without a single package installed there is no user p=
rofile-link present:
>
>
> stefan@guix ~$ echo $PATH
> /run/setuid-programs:/home/stefan/.config/guix/current/bin:/run/current-s=
ystem/profile/bin:/run/current-system/profile/sbin

This is odd, as /etc/profile contains a workaround for this exact
problem (notice the else clause):

# Arrange so that ~/.config/guix/current comes first.
for profile in "$HOME/.guix-profile" "$HOME/.config/guix/current"
do
  if [ -f "$profile/etc/profile" ]
  then
    # Load the user profile's settings.
    GUIX_PROFILE=3D"$profile" ; \
    . "$profile/etc/profile"
  else
    # At least define this one so that basic things just work
    # when the user installs their first package.
    export PATH=3D"$profile/bin:$PATH"
  fi
done

Can you investigate why this is ineffective on your system?

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Message sent to bug-guix@HIDDEN:

Subject: bug#40872: First installed package on guix system is not instantly usable
Resent-From: Stefan <stefan-guix@HIDDEN>
Original-Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
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From: Stefan <stefan-guix@HIDDEN>
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Hi Marius!

> This is odd, as /etc/profile contains a workaround for this exact
> problem (notice the else clause):
>=20
> # Arrange so that ~/.config/guix/current comes first.
> for profile in "$HOME/.guix-profile" "$HOME/.config/guix/current"
> do
>  if [ -f "$profile/etc/profile" ]
>  then
>    # Load the user profile's settings.
>    GUIX_PROFILE=3D"$profile" ; \
>    . "$profile/etc/profile"
>  else
>    # At least define this one so that basic things just work
>    # when the user installs their first package.
>    export PATH=3D"$profile/bin:$PATH"
>  fi
> done
>=20
> Can you investigate why this is ineffective on your system?

Previously I had some packages installed, but I rolled-back to =
generation 0. I found this in my scroll-back buffer:

stefan@guix ~/development/guix$ guix package --roll-back
Folgende Ableitung wird erstellt:
   /gnu/store/l0n6l104ldj7nz6kdyi7l8v5yjnc9p9g-profile.drv
building profile with 0 packages...
Von Generation =E2=80=9E1=E2=80=9C zu =E2=80=9E0=E2=80=9C gewechselt

By rolling back it created a new generation 0 profile which is now lying =
around with this kind of empty file:=20

stefan@guix ~$ cat .guix-profile/etc/profile=20
# Source this file to define all the relevant environment variables in =
Bash
# for this profile.  You may want to define the 'GUIX_PROFILE' =
environment
# variable to point to the "visible" name of the profile, like this:
#
#  GUIX_PROFILE=3D/path/to/profile ; \
#  source /path/to/profile/etc/profile
#
# When GUIX_PROFILE is undefined, the various environment variables =
refer
# to this specific profile generation.

So the test for the existence of this file does not fail, but it doesn't =
change PATH either. This is the profile content, it has no bin/ folder =
to add to PATH:

stefan@guix ~$ ls -lA =
/gnu/store/yyxqc1rhz2i062xq8lbfrhhmiyf6pzvp-profile
insgesamt 12
dr-xr-xr-x 2 root root 4096  1. Jan 1970  etc/
-r--r--r-- 4 root root   37  1. Jan 1970  manifest

Bye

Stefan=

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Stefan <stefan-guix@HIDDEN> writes:

> Hi Marius!
>
>> This is odd, as /etc/profile contains a workaround for this exact
>> problem (notice the else clause):
>>=20
>> # Arrange so that ~/.config/guix/current comes first.
>> for profile in "$HOME/.guix-profile" "$HOME/.config/guix/current"
>> do
>>  if [ -f "$profile/etc/profile" ]
>>  then
>>    # Load the user profile's settings.
>>    GUIX_PROFILE=3D"$profile" ; \
>>    . "$profile/etc/profile"
>>  else
>>    # At least define this one so that basic things just work
>>    # when the user installs their first package.
>>    export PATH=3D"$profile/bin:$PATH"
>>  fi
>> done
>>=20
>> Can you investigate why this is ineffective on your system?
>
> Previously I had some packages installed, but I rolled-back to generation=
 0. I found this in my scroll-back buffer:
>
> stefan@guix ~/development/guix$ guix package --roll-back
> Folgende Ableitung wird erstellt:
>    /gnu/store/l0n6l104ldj7nz6kdyi7l8v5yjnc9p9g-profile.drv
> building profile with 0 packages...
> Von Generation =E2=80=9E1=E2=80=9C zu =E2=80=9E0=E2=80=9C gewechselt
>
> By rolling back it created a new generation 0 profile which is now lying =
around with this kind of empty file:=20
>
> stefan@guix ~$ cat .guix-profile/etc/profile=20
> # Source this file to define all the relevant environment variables in Ba=
sh
> # for this profile.  You may want to define the 'GUIX_PROFILE' environment
> # variable to point to the "visible" name of the profile, like this:
> #
> #  GUIX_PROFILE=3D/path/to/profile ; \
> #  source /path/to/profile/etc/profile
> #
> # When GUIX_PROFILE is undefined, the various environment variables refer
> # to this specific profile generation.
>
> So the test for the existence of this file does not fail, but it doesn't =
change PATH either. This is the profile content, it has no bin/ folder to a=
dd to PATH:

I see.  We could extend the test in /etc/profile to look for a /bin
directory of the profile, but arguably rolling back to generation 0 is
not a very common case.  So I'm in favor of just keeping the status quo.

WDYT?

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