ucchino
September 6, 2026, 12:23am
1
Hello everyone
This is my first installation and I’m working with LXQT, but I previously tried Enlightment, but I got an installation error.
I’m currently using VirtualBox.
NixOS ISO Version nixos-26.05/latest-nixos-graphical-x86_64-linux.iso
I’m attaching the log: https://termbin.com/hmcw
I hope it’s useful to anyone developing NixOS.
Best regards
Paolo
Known issue:
opened 09:29PM - 16 Feb 26 UTC
0.kind: bug
6.topic: nixos
### Nixpkgs version
- Stable (25.11)
### Describe the bug
When enabling enlig… htenment in nixos (25.11), the rebuild of the system fails, complaining that python-efl-1.26.1 not supported for interpreter python3.13.
### Steps to reproduce
Set `services.xserver.desktopManager.enlightenment.enable = true;` and do a simple `nixos-rebuild switch`
### Expected behaviour
I would expect enlightenment as a display manager option
### Screenshots
_No response_
### Relevant log output
```console
error:
… while calling the 'head' builtin
at /nix/store/d3zhyxzz8s7y6pc7pmhhh587i4h60a7n-nixos-25.11/nixos/lib/attrsets.nix:1696:13:
1695| if length values == 1 || pred here (elemAt values 1) (head values) then
1696| head values
| ^
1697| else
… while evaluating the attribute 'value'
at /nix/store/d3zhyxzz8s7y6pc7pmhhh587i4h60a7n-nixos-25.11/nixos/lib/modules.nix:1118:7:
1117| // {
1118| value = addErrorContext "while evaluating the option `${showOption loc}':" value;
| ^
1119| inherit (res.defsFinal') highestPrio;
… while evaluating the option `system.build.toplevel':
… while evaluating definitions from `/nix/store/d3zhyxzz8s7y6pc7pmhhh587i4h60a7n-nixos-25.11/nixos/nixos/modules/system/activation/top-level.nix':
… while evaluating the option `system.systemBuilderArgs':
… while evaluating definitions from `/nix/store/d3zhyxzz8s7y6pc7pmhhh587i4h60a7n-nixos-25.11/nixos/nixos/modules/system/activation/activatable-system.nix':
… while evaluating the option `system.activationScripts.etc.text':
… while evaluating definitions from `/nix/store/d3zhyxzz8s7y6pc7pmhhh587i4h60a7n-nixos-25.11/nixos/nixos/modules/system/etc/etc-activation.nix':
… while evaluating definitions from `/nix/store/d3zhyxzz8s7y6pc7pmhhh587i4h60a7n-nixos-25.11/nixos/nixos/modules/system/etc/etc.nix':
… while evaluating the option `environment.etc.dbus-1.source':
(stack trace truncated; use '--show-trace' to show the full, detailed trace)
error: python-efl-1.26.1 not supported for interpreter python3.13
Command 'nix-build '<nixpkgs/nixos>' --attr config.system.build.toplevel --no-out-link' returned non-zero exit status 1.
```
### Additional context
_No response_
### System metadata
- system: `"x86_64-linux"`
- host os: `Linux 6.12.62, NixOS, 25.05 (Warbler), 25.05.813672.2b0d2b456e4e`
- multi-user?: `yes`
- sandbox: `yes`
- version: `nix-env (Nix) 2.28.5`
- channels(root): `"home-manager-25.05.tar.gz, nixos-25.11"`
- nixpkgs: `/nix/store/d3zhyxzz8s7y6pc7pmhhh587i4h60a7n-nixos-25.11/nixos`
### Notify maintainers
---
**Note for maintainers:** Please tag this issue in your pull request description. (i.e. `Resolves #ISSUE`.)
### I assert that this issue is relevant for Nixpkgs
- [x] I assert that this is a bug and not a support request.
- [x] I assert that this is not a [duplicate of an existing issue](https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+label%3A%220.kind%3A+bug%22+label%3A%226.topic%3A+nixos%22).
- [x] I assert that I have read the [NixOS Code of Conduct](https://github.com/NixOS/.github/blob/master/CODE_OF_CONDUCT.md) and agree to abide by it.
### Is this issue important to you?
Add a :+1: [reaction] to [issues you find important].
[reaction]: https://github.blog/2016-03-10-add-reactions-to-pull-requests-issues-and-comments/
[issues you find important]: https://github.com/NixOS/nixpkgs/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-%2B1-desc
opened 05:09PM - 15 May 26 UTC
I tried installing the Enlightenment DE via Calamares, only for the installation… to fail with an error "python-efl is incompatible with python3.16" or something to that extent. Specifically, the error led me to Issue #491166 (https://github.com/NixOS/nixpkgs/issues/491166)
I apologise if this is in the wrong place, none of the templates looked to be appropriate.
Also the “Development/NixOS Releases” category is wrong, FYI. I used my TL3 powers to recategorize it under Help. Development is more for people working on developing Nix/nixpkgs/NixOS/etc themselves, and the NixOS Releases subcategory is for specific discussions about the development of stable releases (like 26.05).