Building for Gigalixir on windows error: elixir_buildpack.config: line 1: $'\377\376elixir_version=1.14.0': command not found

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1

Hi!!
I have been unable to get the build working for Gigalixir. Following the tutorial exactly as written for a “mix” project, I would get:

Unable to select a buildpack

and then the process would exit.

After creating a .buildpacks (just using the default one also provided), I get this error

/tmp/build/elixir_buildpack.config: line 1: $'\377\376elixir_version=1.14.0': command not found

This seems to be a windows-file-system thing, but I was unable to run wsl on my machine (edit: I was able to try running the commands from wsl, and no dice, they fail with the exact same message), and I feel like this would be a more common problem (I can’t find this exact error message anywhere) if it were just a windows-general problem.
Removing all but GitHub - gigalixir/gigalixir-buildpack-mix from the buildpacks file did allow everything to actually get to gigalixir, but without the heroku buildpack it predictably fails to even start.

2

Ok, so my first instinct was correct. I managed to get wsl working, and after explicitly rewriting the files, it did work. I think the docs should be amended to remove the “windows” option, as the current tools are clearly not able to work on windows.

3

This is a byte-order mark (BOM) indicating the file is UTF16LE. It appears to be confusing the buildpack’s use of source to load the configuration.