cider-2: Missing icon

[ImSapphire]

Nixpkgs version

• Unstable (25.05)

Describe the bug

Missing / broken desktop icon in KDE

Steps to reproduce

• Grab appimage from cider itch.io
• Add to nix store as described in error message when building (nix-store --add-fixed sha256 path/to/cider-linux-x64.AppImage)
• Install as user package (users.users.sapphire.packages = [ pkgs.cider-2 ];)

Expected behaviour

Cider should have the icon from the website

Screenshots

Relevant log output

Additional context

No response

System metadata

 - system: `"x86_64-linux"`
 - host os: `Linux 6.12.19, NixOS, 25.05 (Warbler), 25.05.20250319.a84ebe2`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.24.12`
 - nixpkgs: `/nix/store/1728d3jg85mkz2w2cvk6vi74i30fn6x7-source`

Notify maintainers

@itsvic-dev

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