ec415055ba
Use `utils.escapeSystemdExecArgs` instead of relying on the exact way in which `toString` formats a list. In https://github.com/NixOS/nixpkgs/pull/156706#discussion_r795867283 a suggestion was made and then implemented to replace `toString` with `concatStringsSep " "`. @pennae then suggested to use `utils.escapeSystemdExecArgs` instead in https://github.com/NixOS/nixpkgs/pull/164846#issuecomment-1073001848.