--- Begin Message ---
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Subject: |
simultaneous installation of python2 and python3 fails |
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Date: |
Tue, 04 Jul 2017 08:04:10 +0200 |
When running the command "guix pull && guix package -i address@hidden python"
instead of installing the latest version of python2 and python3, as it
used to do until about four weeks ago, guix gives following error
message (hash values replaced with ...):
guix package: error: profile contains conflicting entries for python:out
guix package: error: first entry: address@hidden:out
/gnu/store/...-python-2.7.13
guix package: error: second entry: address@hidden:out
/gnu/store/...-python-3.5.3
This error could be reproduced in a VM created with guix system vm-image
and following config file:
(use-modules (gnu) (gnu packages) (gnu system nss))
(use-service-modules desktop xorg)
(use-package-modules certs gnome xdisorg lisp)
(operating-system
(host-name "Test")
(timezone "Europe/Zurich")
(locale "de_CH.UTF-8")
(bootloader (grub-configuration (device "/dev/sda")
(timeout 1)))
(file-systems (cons (file-system
(mount-point "/")
(device "/dev/sda1")
(type "ext4"))
%base-file-systems))
(users (cons (user-account
(name "user1")
(comment "User")
(group "users")
(supplementary-groups '("wheel" "audio" "video"))
(home-directory "/home/user1"))
%base-user-accounts))
(packages (cons* nss-certs
sbcl-stumpwm (list sbcl-stumpwm "lib")
%base-packages))
(services (cons* (screen-locker-service xscreensaver "xscreensaver")
(console-keymap-service "de_CH-latin1")
%desktop-services))
(name-service-switch %mdns-host-lookup-nss))
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--- Begin Message ---
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Subject: |
Re: bug#27572: simultaneous installation of python2 and python3 fails |
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Date: |
Tue, 11 Jul 2017 11:29:25 +0200 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) |
Hi Diego,
Diego Nicola Barbato <address@hidden> skribis:
> address@hidden (Ludovic Courtès) writes:
>
>> Hello Diego,
>>
>> Diego Nicola Barbato <address@hidden> skribis:
>>
>>> When running the command "guix pull && guix package -i address@hidden
>>> python"
>>> instead of installing the latest version of python2 and python3, as it
>>> used to do until about four weeks ago, guix gives following error
>>> message (hash values replaced with ...):
>>>
>>> guix package: error: profile contains conflicting entries for python:out
>>> guix package: error: first entry: address@hidden:out
>>> /gnu/store/...-python-2.7.13
>>> guix package: error: second entry: address@hidden:out
>>> /gnu/store/...-python-3.5.3
>>
>> Indeed, Guix now refuses to install two different versions or variants
>> of the same package since in general they would conflict.
>>
>> In this particular case, they do not actually conflict, I think, since
>> address@hidden provides executables prefixed by “3” whereas address@hidden
>> does not.
>>
>> Perhaps we should rename “python” to “python2” or something like that?
>>
>> In the meantime, I recommend using separate profiles for your Python 2
>> and Python 3 development environments. Is that a viable option for you?
>
> Using separate profiles seems like a reasonable option. I also tried
> using guix environment with the --ad-hoc flag.
Right, that should work fine.
I’m closing this bug now; please do reopen it if you feel like the
solutions above aren’t quite convenient after all.
Thank you,
Ludo’.
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