tailray: migrate to tray-icon

[NotAShelf]

Better platform support than ksni, although marginally larger. Some additional polish also :)

Signed-off-by: NotAShelf raf@notashelf.dev
Change-Id: Ic125aa1238948434ca8a841719492b5f6a6a6964

[eclairevoyant]

       error: Package ‘libayatana-appindicator-0.5.92’ in /nix/store/6bf45swqy01mg500w01qvpapm4a6f3z4-source/pkgs/by-name/li/libayatana-appindicator/package.nix:51 is not available on the requested hostPlatform:
         hostPlatform.system = "aarch64-darwin"
         package.meta.platforms = [
           "aarch64-linux"
           "armv5tel-linux"
           "armv6l-linux"
           "armv7a-linux"
           "armv7l-linux"
           "i686-linux"
           "loongarch64-linux"
           "m68k-linux"
           "microblaze-linux"
           "microblazeel-linux"
           "mips-linux"
           "mips64-linux"
           "mips64el-linux"
           "mipsel-linux"
           "powerpc-linux"
           "powerpc64-linux"
           "powerpc64le-linux"
           "riscv32-linux"
           "riscv64-linux"
           "s390-linux"
           "s390x-linux"
           "x86_64-linux"
         ]
         package.meta.badPlatforms = [ ]
       , refusing to evaluate.

       a) To temporarily allow packages that are unsupported for this system, you can use an environment variable
          for a single invocation of the nix tools.

            $ export NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM=1

          Note: When using `nix shell`, `nix build`, `nix develop`, etc with a flake,
                then pass `--impure` in order to allow use of environment variables.

       b) For `nixos-rebuild` you can set
         { nixpkgs.config.allowUnsupportedSystem = true; }
       in configuration.nix to override this.

       c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
         { allowUnsupportedSystem = true; }
       to ~/.config/nixpkgs/config.nix.


       note: trace involved the following derivations:
       derivation 'darwin-system-26.05.59bd68b'
       derivation 'system-applications'
       derivation 'tailray-0.3.4-dirty'

sad