The usual approach to using
snap download with a brand store is use
snapcraft export-login --acls package_access store.auth and the use
UBUNTU_STORE_ID=<storeid> UBUNTU_STORE_AUTH_DATA_FILENAME=./store.auth snap download <snap_name_from_brand_store>.
However, when I do this with credentials generated with Snapcraft 7, I get a message `error: cannot decode auth file : invalid character ‘e’ looking for beginning of value.
I think Snapcraft 7 introduced a new authentication method using craft store rather than a macaroon which is seems
snap download still needs? Is there any way to make this work?