Celestia: [instalação linux] autopackage.org está morto, forneça métodos de instalação alternativos.

Ao executar o arquivo .package , recebo as seguintes mensagens:

$ ./celestia-1.5.1.x86.package 

The installation of this software requires some additional support
code to be installed.

A] If the support code is found in a local directory, it will be used.
   The file containing the support code will be called:

      "autopackage.tar.bz2"

 or

B] If there is an active Internet connection, the support code will be
   downloaded from:

      "http://autopackage.org/downloads/latest/autopackage.tar.bz2"

   Proxy users should ensure the http_proxy environment variable is
   set, otherwise the download may fail.


Selection B --> OK to download and install support code now? (Y/n): y

Attempting download of http://autopackage.org/downloads/latest/x86_64/autopackage.tar.bz2 ... 

--2018-02-08 20:55:49--  http://autopackage.org/downloads/latest/x86_64/autopackage.tar.bz2
Resolving autopackage.org (autopackage.org)... 162.243.21.36
Connecting to autopackage.org (autopackage.org)|162.243.21.36|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://www.coper.work/koujo/article [following]
--2018-02-08 20:55:50--  https://www.coper.work/koujo/article
Resolving www.coper.work (www.coper.work)... 52.193.113.43, 54.249.59.53
Connecting to www.coper.work (www.coper.work)|52.193.113.43|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: ‘autopackage.tar.bz2’

autopackage.tar.bz2     [  <=>               ]  62.95K   256KB/s    in 0.2s    

2018-02-08 20:55:53 (256 KB/s) - ‘autopackage.tar.bz2’ saved [64462]

Download completed.


bzip2: autopackage.tar.bz2 is not a bzip2 file.
tar: This does not look like a tar archive
tar: Exiting with failure status due to previous errors

The autopackage support code could not be installed.

It can be manually downloaded and installed by running the
installation script located in the downloaded archive.

Parece que o arquivo tenta baixar http://autopackage.org/downloads/latest/x86_64/autopackage.tar.bz2 que não existe mais e redireciona para algum outro site irrelevante. A instalação não pode prosseguir a partir daqui; existe alguma outra maneira de instalar celestia sans building a partir do próprio código-fonte?