bug: Simple assets not found during build

[BSD-Yassin]

Are you following the right branch?

• My Nixpkgs and Home Manager versions are in sync

Is there an existing issue for this?

• I have searched the existing issues

Issue description

Hello,

I am rebuilding a Nix config I had under a simple configuration.nix. It worked okay for sway under /etc/nixos/configuration.nix, so here I am guess that the home-manager file is the one I'm not mastering properly.

I am in the process of doing that under home-manager and I get this result :

error: builder for '/nix/store/a727cb6r5282y18p53m2j7kbdr2gjavy-sway.conf.drv' failed with exit code 1;
       last 8 log lines:
       > Fontconfig error: No writable cache directories
       > Fontconfig error: No writable cache directories
       > Fontconfig error: No writable cache directories
       > Fontconfig error: No writable cache directories
       > Fontconfig error: No writable cache directories
       > 00:00:00.071 [sway/commands/output/background.c:121] Unable to access background file '/home/yassin/Projects/nixos-config/assets/Bgs/joker.jpg': No such file or directory
       > 00:00:00.071 [sway/config.c:831] Error on line 94 'bg /home/yassin/Projects/nixos-config/assets/Bgs/joker.jpg fill': unable to access background file '/home/yassin/Projects/nixos-con
fig/assets/Bgs/joker.jpg' (/nix/store/g47n2p32p4my41gkl1rf8m5s9b506363-sway.conf)
       > 00:00:00.071 [sway/config.c:441] Error(s) loading config!
       For full logs, run 'nix log /nix/store/a727cb6r5282y18p53m2j7kbdr2gjavy-sway.conf.drv'.
error: 1 dependencies of derivation '/nix/store/fd7p2aczxf90rppgf8q388y81s5gbcmw-activation-script.drv' failed to build
error: 1 dependencies of derivation '/nix/store/bbc4jjf5z608whc9s94vi89zrfshjy1g-home-manager-generation.drv' failed to build
Uh oh, the installation failed! Please create an issue at

    https://github.com/nix-community/home-manager/issues

if the error seems to be the fault of Home Manager.

Which obviously if I look into the files :

yassin@nixos ~ [1]> ls ./Projects/nixos-config/assets/Bgs/
bloom.jpg  branchrose.jpg  green_circuit.jpg  joker.jpg  treepath.jpg

Obviously if it is not a path issue, I trust that it's a file permission config, but I am not sure to which group and which permission to allow.

Under my sway.nix, here's how I lead towards the path :

   output = {
            "*" = {
              bg = "${config.home.homeDirectory}/Projects/nixos-config/assets/Bgs/joker.jpg fill"
            };

Which is set in my home.nix :

    home.homeDirectory = "/home/yassin";

Maintainer CC

Sorry I gotta admit I don't know how to do that.

System information

- system: `"x86_64-linux"`
 - host os: `Linux 6.6.90, NixOS, 24.11 (Vicuna), 24.11.717984.ba8b70ee098b`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.24.14`
 - channels(root): `"nixos-24.11"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`