[erlang-questions] ANN: erln8: an Erlang version manager

[Gleb Peregud]

Hey

This looks cool!

I have a quick question. How does it work under the hood? How does my shell
know to start the "erl" binary from the appropriate version when I use
erln8? Or is it my responsibility to start appropriate version? How does it
work with rebar?

Cheers,
Gleb


On Fri, Dec 27, 2013 at 4:43 PM, Dave Parfitt <dparfitt@REDACTED> wrote:

> Hello -
>
> I'd like to announce the first beta release of erln8 [0]. erln8 allows you
> build Erlang from one or many git repos, and then "set and forget" a
> version
> of Erlang *per directory*. If a suitable version of Erlang isn't found in
> the current directory, erln8 searches up the directory tree until it finds
> one.
>
> Basic features:
> - specify the version of Erlang to use for a directory and all it's
>     subdirectories with a simple command such as:
>
>    erln8 --use R16B03
>
>    This creates a simple erln8.config file in the cwd specifying the
> version
>    of Erlang to use.
>
> - supports multiple git repos, build from any branch/tag
>
> - building from the canonical OTP git repo is as simple as:
>     erln8 --build --tag OTP_R16B02 --id R16B02
>
> - shell completion for erln8 commands and command parameters
>       (bash-only for now)
>
> - "link" to already built installations of Erlang so you can take
>     advantage or erln8's --use command.
>
> - store build configurations in ~/.erln8.d/config so you don't have to copy
>    and paste them each time. Specify a configuration at build time with
> --config my_config.
>
> - written in C w/ glib
>
> I'm sure there are some bugs to be worked out. Please feel free to submit
> issues or pull requests via Github at [2].
>
> And yes, I've heard of kerl [1], and it works great, but I wanted to build
> and manage Erlang sources from git and be able to "set and forget" a
> version
> of Erlang for a given directory. If you have any comments or suggestions,
> please respond to me offline at [3], and flaming arrows can be sent to [4].
>
> Happy New Year!
> Dave
>
> [0] http://metadave.github.io/erln8/
> [1] https://github.com/spawngrid/kerl
> [2] https://github.com/metadave/erln8
> [3] diparfitt at gmail
> [4] /dev/null
>
>
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