* use `mktemp -d` for temporary files
* use trap to remove temporary files
* fix some shellcheck warnings
Change-Id: Ib73f5a52d7bcd21232e7ef31a815c28a06dcd857
Move default.nix to nix folder
Rename yandex_music to yandex-music to be more nix-styled
Add generation of yandex-music.desktop file
Change-Id: Id0f3bebc22e50ce51be13615ef47717277eb8e3d