Confirmation Checklist
- I confirm that this issue occurs on the latest release of Phoenix. You can check what the latest version is on the
Releasespage. - I confirm that this issue has NOT already been reported on the Codeberg issue tracker, the GitLab issue tracker, and/or the GitHub issue tracker.
What web browser(s) are you using with Phoenix?
Firefox
Other
No response
What operating system(s) are you experiencing this issue on?
NixOS
Other
No response
What version of Firefox/Gecko and Phoenix are you using?
152.0.4 (Phoenix: 2026年06月10日.1)
If you remember, what version of Firefox/Gecko and Phoenix did you first notice the issue on?
No response
Does the issue occur on a new browser profile?
- Yes
- No
Please share your browser's update channel.
mozilla-official (or it’s not there)
Please share a list of your currently installed browser add-ons/extensions, as well as the versions you have installed.
Add-ons Search Detection extension 3.0.0 true app-builtin-addons addons-search-detection@mozilla.com
Data Leak Blocker extension 144.0.0 true app-builtin-addons data-leak-blocker@mozilla.com
Firefox Multi-Account Containers extension 8.3.8 true app-profile @testpilot-containers
Form Autofill extension 1.0.1 true app-builtin-addons formautofill@mozilla.org
Grammalecte [fr] extension 2.3.0 true app-profile French-GC@grammalecte.net
IPP Activator extension 0.1 true app-builtin-addons ipp-activator@mozilla.com
KeePassXC-Browser extension 1.10.3 true app-profile keepassxc-browser@keepassxc.org
New Tab extension 152.3.0 true app-builtin-addons newtab@mozilla.org
Passe-redirection extension 2.3.6 true app-profile skipredirect@sblask
Picture-In-Picture extension 1.0.0 true app-builtin-addons pictureinpicture@mozilla.org
uBlock Origin extension 1.72.0 true app-profile uBlock0@raymondhill.net
Web Compatibility Interventions extension 152.9.0 true app-builtin-addons webcompat@mozilla.org
Language: Français (French) locale 152.0.20260706.120035 true app-profile langpack-fr@firefox.mozilla.org
Thème système — auto theme 1.4.2 true app-builtin default-theme@mozilla.org
Clair theme 1.3.4 false app-builtin firefox-compact-light@mozilla.org
Firefox Alpenglow theme 1.5.2 false app-builtin firefox-alpenglow@mozilla.org
Sombre theme 1.3.4 false app-builtin firefox-compact-dark@mozilla.org
Please explain the issue you are experiencing.
When updating my Nixos flakes with the command sudo nix flake update; sudo nixos-rebuild switch --flake ., I get an error message with phoenix.
Please provide detailed steps to reproduce the issue.
Error logs:
remote: Enumerating objects: 242, done.
remote: Counting objects: 100% (43/43), done.
remote: Total 242 (delta 42), reused 43 (delta 42), pack-reused 199 (from 1)
Réception d'objets: 100% (242/242), 394.10 KiO | 1.63 MiO/s, fait.
Résolution des deltas: 100% (141/141), complété avec 21 objets locaux.
Depuis https://gitlab.com/celenityy/Phoenix
d3cc0d78..62778509 pages -> pages
* [nouvelle étiquette] 2026年07月08日.1 -> 2026年07月08日.1
warning: updating lock file "/etc/nixos/flake.lock":
• Updated input 'nixpkgs':
'github:NixOS/nixpkgs/a50de1b7d8a586adc18d2395c19de7d6058e6030?narHash=sha256-uslt2pqShTIXDdAHRHv2QkYLsVdY8Oqwz0EA48/RSM8%3D' (2026年07月04日)
→ 'github:NixOS/nixpkgs/0ad6f47ea4fe188f4bc8f0380f93ae8523337c6c?narHash=sha256-0xIy4dVLqq47rA%2BmRy0hXDfjhQd4E5PoIns/RmB7nR4%3D' (2026年07月07日)
• Updated input 'phoenix':
'git+https://gitlab.com/celenityy/Phoenix.git?ref=pages&rev=d3cc0d78b3533d409e181c8c0fec6964c835cf54' (2026年06月10日)
→ 'git+https://gitlab.com/celenityy/Phoenix.git?ref=pages&rev=62778509fa8de445eb3f21cbed90265321132f08' (2026年07月08日)
building the system configuration...
error:
... while calling the 'head' builtin
at «github:NixOS/nixpkgs/0ad6f47ea4fe188f4bc8f0380f93ae8523337c6c?narHash=sha256-0xIy4dVLqq47rA%2BmRy0hXDfjhQd4E5PoIns/RmB7nR4%3D»/lib/attrsets.nix:1717:13:
1716| if length values == 1 || pred here (elemAt values 1) (head values) then
1717| head values
| ^
1718| else
... while evaluating the attribute 'value'
at «github:NixOS/nixpkgs/0ad6f47ea4fe188f4bc8f0380f93ae8523337c6c?narHash=sha256-0xIy4dVLqq47rA%2BmRy0hXDfjhQd4E5PoIns/RmB7nR4%3D»/lib/modules.nix:1167:7:
1166| // {
1167| value = addErrorContext "while evaluating the option `${showOption loc}':" value;
| ^
1168| inherit (res.defsFinal') highestPrio;
... while evaluating the option `system.build.toplevel':
... while evaluating definitions from `/nix/store/7blcfay1hap81n2bc9j4d8b1cxrvng50-source/nixos/modules/system/activation/top-level.nix':
... while evaluating the option `environment.etc':
... while evaluating definitions from `/nix/store/7blcfay1hap81n2bc9j4d8b1cxrvng50-source/nixos/modules/programs/firefox.nix':
... while evaluating the option `programs.firefox.policies':
... while evaluating definitions from `/nix/store/7blcfay1hap81n2bc9j4d8b1cxrvng50-source/flake.nix':
(stack trace truncated; use '--show-trace' to show the full, detailed trace)
error: Cannot build '/nix/store/d3ck2g4c0ww64xrrvw4wp7kjjcsa7sl9-phoenix.drv'.
Reason: builder failed with exit code 127.
Output paths:
/nix/store/zph528340azrvm9n860l44k9cyax9k7x-phoenix
Last 25 log lines:
> + [[ 0 == 1 ]]
> + [[ 1 == 1 ]]
> + maybe_verify_file undefined PHOENIX_EXTRA_POLICIES_LINUX_NONFLATPAK
> + [[ -z x ]]
> + [[ -z x ]]
> + local readonly maybe_file=undefined
> + local readonly maybe_file_env=PHOENIX_EXTRA_POLICIES_LINUX_NONFLATPAK
> + [[ undefined != undefined ]]
> + [[ 0 == 1 ]]
> + [[ 0 == 1 ]]
> + [[ 0 == 1 ]]
> + [[ 0 == 1 ]]
> + [[ 0 == 1 ]]
> + [[ 0 == 1 ]]
> + local readonly check_static_prefs_js=0
> + [[ 0 == 1 ]]
> + [[ -d /tmp/phoenix/build/tmp ]]
> + mkdir -p /tmp/phoenix/build/tmp
> + build_phoenix_common
> + cp /build/jsf94pavsv6p90dd80h4lil22k0wzwzk-source/phoenix-core.cfg /tmp/phoenix/build/tmp/phoenix-core.cfg
> + cp /build/jsf94pavsv6p90dd80h4lil22k0wzwzk-source/phoenix-unified.cfg /tmp/phoenix/build/tmp/phoenix-unified.cfg
> + [[ 0 == 1 ]]
> + [[ 0 == 1 ]]
> + /bin/sed -i 's|{PHOENIX_APPLY_EXTENDED}|false|' /tmp/phoenix/build/tmp/phoenix-core.cfg
> /build/jsf94pavsv6p90dd80h4lil22k0wzwzk-source/scripts/fly.sh: line 507: /bin/sed: No such file or directory
For full logs, run:
nix log /nix/store/d3ck2g4c0ww64xrrvw4wp7kjjcsa7sl9-phoenix.drv
Command 'nix --extra-experimental-features 'nix-command flakes' build --print-out-paths '.#nixosConfigurations."nixos".config.system.build.toplevel' --no-link' returned non-zero exit status 100.
### Confirmation Checklist
- [x] I confirm that this issue occurs on the **latest release** of Phoenix. You can check what the latest version is on [the `Releases` page](https://codeberg.org/celenity/Phoenix/releases).
- [x] I confirm that this issue has **NOT** already been reported on [the Codeberg issue tracker](https://codeberg.org/celenity/Phoenix/issues), [the GitLab issue tracker](https://gitlab.com/celenityy/Phoenix/-/issues), **and/or** [the GitHub issue tracker](https://github.com/celenityy/Phoenix/issues).
### What web browser(s) are you using with Phoenix?
Firefox
### Other
_No response_
### What operating system(s) are you experiencing this issue on?
NixOS
### Other
_No response_
### What version of Firefox/Gecko and Phoenix are you using?
152.0.4 (Phoenix: 2026年06月10日.1)
### If you remember, what version of Firefox/Gecko and Phoenix did you first notice the issue on?
_No response_
### Does the issue occur on a new browser profile?
- [x] Yes
- [ ] No
### Please share your browser's update channel.
mozilla-official (or it’s not there)
### Please share a list of your currently installed browser add-ons/extensions, as well as the versions you have installed.
Add-ons Search Detection extension 3.0.0 true app-builtin-addons addons-search-detection@mozilla.com
Data Leak Blocker extension 144.0.0 true app-builtin-addons data-leak-blocker@mozilla.com
Firefox Multi-Account Containers extension 8.3.8 true app-profile @testpilot-containers
Form Autofill extension 1.0.1 true app-builtin-addons formautofill@mozilla.org
Grammalecte [fr] extension 2.3.0 true app-profile French-GC@grammalecte.net
IPP Activator extension 0.1 true app-builtin-addons ipp-activator@mozilla.com
KeePassXC-Browser extension 1.10.3 true app-profile keepassxc-browser@keepassxc.org
New Tab extension 152.3.0 true app-builtin-addons newtab@mozilla.org
Passe-redirection extension 2.3.6 true app-profile skipredirect@sblask
Picture-In-Picture extension 1.0.0 true app-builtin-addons pictureinpicture@mozilla.org
uBlock Origin extension 1.72.0 true app-profile uBlock0@raymondhill.net
Web Compatibility Interventions extension 152.9.0 true app-builtin-addons webcompat@mozilla.org
Language: Français (French) locale 152.0.20260706.120035 true app-profile langpack-fr@firefox.mozilla.org
Thème système — auto theme 1.4.2 true app-builtin default-theme@mozilla.org
Clair theme 1.3.4 false app-builtin firefox-compact-light@mozilla.org
Firefox Alpenglow theme 1.5.2 false app-builtin firefox-alpenglow@mozilla.org
Sombre theme 1.3.4 false app-builtin firefox-compact-dark@mozilla.org
### Please explain the issue you are experiencing.
When updating my Nixos flakes with the command `sudo nix flake update; sudo nixos-rebuild switch --flake .`, I get an error message with phoenix.
### Please provide detailed steps to reproduce the issue.
Error logs:
```
remote: Enumerating objects: 242, done.
remote: Counting objects: 100% (43/43), done.
remote: Total 242 (delta 42), reused 43 (delta 42), pack-reused 199 (from 1)
Réception d'objets: 100% (242/242), 394.10 KiO | 1.63 MiO/s, fait.
Résolution des deltas: 100% (141/141), complété avec 21 objets locaux.
Depuis https://gitlab.com/celenityy/Phoenix
d3cc0d78..62778509 pages -> pages
* [nouvelle étiquette] 2026年07月08日.1 -> 2026年07月08日.1
warning: updating lock file "/etc/nixos/flake.lock":
• Updated input 'nixpkgs':
'github:NixOS/nixpkgs/a50de1b7d8a586adc18d2395c19de7d6058e6030?narHash=sha256-uslt2pqShTIXDdAHRHv2QkYLsVdY8Oqwz0EA48/RSM8%3D' (2026年07月04日)
→ 'github:NixOS/nixpkgs/0ad6f47ea4fe188f4bc8f0380f93ae8523337c6c?narHash=sha256-0xIy4dVLqq47rA%2BmRy0hXDfjhQd4E5PoIns/RmB7nR4%3D' (2026年07月07日)
• Updated input 'phoenix':
'git+https://gitlab.com/celenityy/Phoenix.git?ref=pages&rev=d3cc0d78b3533d409e181c8c0fec6964c835cf54' (2026年06月10日)
→ 'git+https://gitlab.com/celenityy/Phoenix.git?ref=pages&rev=62778509fa8de445eb3f21cbed90265321132f08' (2026年07月08日)
building the system configuration...
error:
... while calling the 'head' builtin
at «github:NixOS/nixpkgs/0ad6f47ea4fe188f4bc8f0380f93ae8523337c6c?narHash=sha256-0xIy4dVLqq47rA%2BmRy0hXDfjhQd4E5PoIns/RmB7nR4%3D»/lib/attrsets.nix:1717:13:
1716| if length values == 1 || pred here (elemAt values 1) (head values) then
1717| head values
| ^
1718| else
... while evaluating the attribute 'value'
at «github:NixOS/nixpkgs/0ad6f47ea4fe188f4bc8f0380f93ae8523337c6c?narHash=sha256-0xIy4dVLqq47rA%2BmRy0hXDfjhQd4E5PoIns/RmB7nR4%3D»/lib/modules.nix:1167:7:
1166| // {
1167| value = addErrorContext "while evaluating the option `${showOption loc}':" value;
| ^
1168| inherit (res.defsFinal') highestPrio;
... while evaluating the option `system.build.toplevel':
... while evaluating definitions from `/nix/store/7blcfay1hap81n2bc9j4d8b1cxrvng50-source/nixos/modules/system/activation/top-level.nix':
... while evaluating the option `environment.etc':
... while evaluating definitions from `/nix/store/7blcfay1hap81n2bc9j4d8b1cxrvng50-source/nixos/modules/programs/firefox.nix':
... while evaluating the option `programs.firefox.policies':
... while evaluating definitions from `/nix/store/7blcfay1hap81n2bc9j4d8b1cxrvng50-source/flake.nix':
(stack trace truncated; use '--show-trace' to show the full, detailed trace)
error: Cannot build '/nix/store/d3ck2g4c0ww64xrrvw4wp7kjjcsa7sl9-phoenix.drv'.
Reason: builder failed with exit code 127.
Output paths:
/nix/store/zph528340azrvm9n860l44k9cyax9k7x-phoenix
Last 25 log lines:
> + [[ 0 == 1 ]]
> + [[ 1 == 1 ]]
> + maybe_verify_file undefined PHOENIX_EXTRA_POLICIES_LINUX_NONFLATPAK
> + [[ -z x ]]
> + [[ -z x ]]
> + local readonly maybe_file=undefined
> + local readonly maybe_file_env=PHOENIX_EXTRA_POLICIES_LINUX_NONFLATPAK
> + [[ undefined != undefined ]]
> + [[ 0 == 1 ]]
> + [[ 0 == 1 ]]
> + [[ 0 == 1 ]]
> + [[ 0 == 1 ]]
> + [[ 0 == 1 ]]
> + [[ 0 == 1 ]]
> + local readonly check_static_prefs_js=0
> + [[ 0 == 1 ]]
> + [[ -d /tmp/phoenix/build/tmp ]]
> + mkdir -p /tmp/phoenix/build/tmp
> + build_phoenix_common
> + cp /build/jsf94pavsv6p90dd80h4lil22k0wzwzk-source/phoenix-core.cfg /tmp/phoenix/build/tmp/phoenix-core.cfg
> + cp /build/jsf94pavsv6p90dd80h4lil22k0wzwzk-source/phoenix-unified.cfg /tmp/phoenix/build/tmp/phoenix-unified.cfg
> + [[ 0 == 1 ]]
> + [[ 0 == 1 ]]
> + /bin/sed -i 's|{PHOENIX_APPLY_EXTENDED}|false|' /tmp/phoenix/build/tmp/phoenix-core.cfg
> /build/jsf94pavsv6p90dd80h4lil22k0wzwzk-source/scripts/fly.sh: line 507: /bin/sed: No such file or directory
For full logs, run:
nix log /nix/store/d3ck2g4c0ww64xrrvw4wp7kjjcsa7sl9-phoenix.drv
Command 'nix --extra-experimental-features 'nix-command flakes' build --print-out-paths '.#nixosConfigurations."nixos".config.system.build.toplevel' --no-link' returned non-zero exit status 100.
```