Is it possible to specify the application version and the release version only once?

Questions / Help
,
1

Hi all,

in a rebar3 application that I deploy with releases,
I set the application version in the myapp.app.src file,
and the release version in the rebar.config (relx section).

  1. Are those two versions meant to be different?
  2. Is there a way to have both in the same place, to simplify deploying a new version?

I don’t need any hot code upgrade or distribution.

Cheers

2

Use semver (Semantic Versioning):

% myapp.app.src
{application, myapp, [
    {vsn, semver}
]}.

relx also accepts it, see.

Using semver automatically uses the latest Git tag on a repository to construct the version number.

Search for Version type: Basic Usage | Rebar3

1 Like
3

Ah! I completely missed the fact myapp.app.src supports that as well, thank you!

1 Like
4

I found this article from Roger Lipscombe useful:

We are using this technique on most of our Erlang projects, and it is quite effective.