[GH-ISSUE #1139] Failure to create Music module #8778

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opened 2026-05-23 03:54:16 +01:00 by JakeStanger · 1 comment

JakeStanger commented

2026-05-23 03:54:16 +01:00

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Originally created by @bandithedoge on GitHub (Sep 4, 2025).
Original GitHub issue: https://github.com/JakeStanger/ironbar/issues/1139

Describe the bug

2025-09-04T19:44:40.501835Z ERROR ironbar::bar: 427: failed to create module Music:
   0: \x1b[91mregex parse error:
          \{([\w-]+)}
              ^^
      error: Unicode-aware Perl class not found (make sure the unicode-perl feature is enabled)\x1b[0m

Location:
   \x1b[35msrc/modules/music/mod.rs\x1b[0m:\x1b[35m107\x1b[0m

Probably https://lib.rs/crates/regex/features#feature-unicode-perl needs to be enabled.

To reproduce
Steps to reproduce the behavior:

Add module music
Run ironbar

Expected behavior

System information:

Distro: NixOS unstable
Compositor: Niri
Ironbar version: master

Configuration

Config

programs.ironbar = {
  enable = true;
  config = {
    # ...
    end = [{
      type = "music";
      player_type = "mpd";
      format = "{artist} – {title}";
    }];
    # ...
  };
};

Originally created by @bandithedoge on GitHub (Sep 4, 2025). Original GitHub issue: https://github.com/JakeStanger/ironbar/issues/1139 **Describe the bug** ``` 2025-09-04T19:44:40.501835Z ERROR ironbar::bar: 427: failed to create module Music: 0: \x1b[91mregex parse error: \{([\w-]+)} ^^ error: Unicode-aware Perl class not found (make sure the unicode-perl feature is enabled)\x1b[0m Location: \x1b[35msrc/modules/music/mod.rs\x1b[0m:\x1b[35m107\x1b[0m ``` Probably https://lib.rs/crates/regex/features#feature-unicode-perl needs to be enabled. **To reproduce** Steps to reproduce the behavior: 1. Add module `music` 2. Run `ironbar` **Expected behavior**  **System information:** - Distro: NixOS unstable - Compositor: Niri - Ironbar version: master **Configuration**  <details><summary>Config</summary> ```nix programs.ironbar = { enable = true; config = { # ... end = [{ type = "music"; player_type = "mpd"; format = "{artist} – {title}"; }]; # ... }; }; ``` </details>

JakeStanger

2026-05-23 03:54:16 +01:00

closed this issue
added the
M:Music

T:Bug

A:Core

P:High
labels

JakeStanger commented

2026-05-23 03:54:16 +01:00

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Owner

@JakeStanger commented on GitHub (Sep 5, 2025):

No idea why you're experiencing that and it's not been reported elsewhere, unless the regex crate features changed recently, but on review there's no reason for the module to depend on regex at all. Will have a fix shortly.

@JakeStanger commented on GitHub (Sep 5, 2025): No idea why you're experiencing that and it's not been reported elsewhere, unless the regex crate features changed recently, but on review there's no reason for the module to depend on regex at all. Will have a fix shortly.