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Is this possible to have different versions of Erlang/OTP installed simultaneously on the same platform?
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Download Erlang/OTP 2. To install Erlang you can either build it from source or use a pre-built package. Take a look at the Erlang/OTP 25 release description to see what changes Erlang/OTP 25 brings over the previous major version. The Erlang/OTP version scheme is described in the Erlang/OTP Systems Principles Guide.
Erlang/OTP 23.3 is the third and final maintenance patch package for OTP 23, with mostly bug fixes as well as a few improvements.
I use Kerl to install Erlang on my machines. Quite easy to use, and allows to have several Erlang systems installed on same machine. You can then easily choose the one you want to use.
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It is no only possible, but also very frequent. On my machine I have one version that I installed for development (R13B03) it is the default version when I launch erl. A second copy of the same version associated with nitrogen. this copy is used when I start my nitrogen website. The version will not change when I will use the R16B.. for development A partial older version which came with the installation of Wings3D.
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