"Searching custom icon paths is not yet supported."

[wongandj]

Quickshell is unable to display tray icons with certain paths, it seems. Specifically, the icon for Quassel (an IRC client) does not display because it uses some non-standard method of changing its icon when it wants your attention:

  WARN: Searching custom icon paths is not yet supported. Icon path will be ignored for "active-quassel-tray-inverted?path=/tmp/quassel-sni-ipvZqY"
  WARN: Could not load icon "active-quassel-tray-inverted?path=/tmp/quassel-sni-ipvZqY" at size QSize(18, 18) from request

Investigating /tmp/quassel-sni-ipvZqY, it seems that Quassel builds its own small icons directory:

/tmp/quassel-sni-ipvZqY/hicolor/
├── 16x16
│   └── status
│       └── message-quassel-tray-inverted.png
├── 22x22
│   └── status
│       └── message-quassel-tray-inverted.png
├── 24x24
│   └── status
│       ├── active-quassel-tray-inverted.png
│       ├── inactive-quassel-tray-inverted.png
│       └── message-quassel-tray-inverted.png
├── 32x32
│   └── status
│       └── message-quassel-tray-inverted.png
├── 48x48
│   └── status
│       └── message-quassel-tray-inverted.png
├── 64x64
│   └── status
│       ├── active-quassel-tray-inverted.png
│       ├── inactive-quassel-tray-inverted.png
│       └── message-quassel-tray-inverted.png
└── 96x96
    └── status
        └── message-quassel-tray-inverted.png