Crate atomic_file_install

Atomically install a regular file or a symlink to destination, can be either noclobber (fail if destination already exists) or replacing it atomically if it exists.

Functions

• atomic_install
  Atomically install a file, this atomically replace dst if it exists.
• atomic_install_noclobber
  Install a file, this fails if the dst already exists.
• atomic_symlink_file
  Atomically create a symlink at link to dest, this atomically replace link if it already exists.
• atomic_symlink_file_noclobber
  Create a symlink at link to dest, this fails if the link already exists.