I am trying to install elixir for the first time as mentioned in here https://elixir-lang.org/install.html#unix-and-unix-like. But I am getting this error even after I removed the previous downloaded erlang-solutions package.
~ $ wget https://packages.erlang-solutions.com/erlang-solutions_2.0_all.deb
--2019-11-16 13:18:53-- https://packages.erlang-solutions.com/erlang-solutions_2.0_all.deb
Resolving packages.erlang-solutions.com (packages.erlang-solutions.com)... 13.224.106.98, 13.224.106.9, 13.224.106.63, ...
Connecting to packages.erlang-solutions.com (packages.erlang-solutions.com)|13.224.106.98|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 6288 (6.1K)
Saving to: ‘erlang-solutions_2.0_all.deb.3’
erlang-solutions_2. 100%[===================>] 6.14K --.-KB/s in 0s
2019-11-16 13:18:54 (660 MB/s) - ‘erlang-solutions_2.0_all.deb.3’ saved [6288/6288]
~ $ sudo dpkg -i erlang-solutions_2.0_all.deb
(Reading database ... 211574 files and directories currently installed.)
Preparing to unpack erlang-solutions_2.0_all.deb ...
Unpacking erlang-solutions (2.0) over (2.0) ...
Setting up erlang-solutions (2.0) ...
Can not detect version codename.
dpkg: error processing package erlang-solutions (--install):
subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
erlang-solutions
I had the same problem with my Debian 9.11 section.
The problem is in /var/lib/dpkg/info/erlang-solutions.postinst you can change set -e to set -x to debug and see why it returns a 1, but I have downloaded the latest version of https://www.erlang-solutions.com/resources/download.html and it worked correctly for me