dkjson rocks are installed by downloading some author-hosted tar.gz source archives. It seems that 2.5-2 version archive has been removed. (It's not available, yet 2.8-1 is ok.) We also change rockspec source to luarocks in the commit since GitHub repository for dkjson is archived since 2020 [1] while luarocks page is alive and receives new updates [2].
dkjson rocks are installed by downloading some author-hosted tar.gz source archives. It seems that 2.5-2 version archive has been removed. (It's not available, yet 2.8-1 is ok.) We also change rockspec source to luarocks in the commit since GitHub repository for dkjson is archived since 2020 [1] while luarocks page is alive and receives new updates [2].