windows initial support

[ZeeWanderer]

This makes it compile on Windows and work from the command line, but still can't get it to work properly with Windows VS Code extension.

[2025-07-17T18:47:44.619Z] [ERROR elp_ide_db::docs] Unknown application - could not load app_data to determine whether file is on OTP
[2025-07-17T18:47:44.619Z] [ERROR elp_ide_db::docs] No corresponding appdata found for file, so no docs can be loaded
[Error - 9:47:44 PM] [elp_ide_db::docs] Unknown application - could not load app_data to determine whether file is on OTP
[Error - 9:47:44 PM] [elp_ide_db::docs] No corresponding appdata found for file, so no docs can be loaded
[2025-07-17T19:06:47.466Z] [ERROR elp_ide_db::docs] Unknown application - could not load app_data to determine whether file is on OTP
[2025-07-17T19:06:47.466Z] [ERROR elp_ide_db::docs] No corresponding appdata found for file, so no docs can be loaded
[Error - 10:06:47 PM] [elp_ide_db::docs] Unknown application - could not load app_data to determine whether file is on OTP
[Error - 10:06:47 PM] [elp_ide_db::docs] No corresponding appdata found for file, so no docs can be loaded

and when running elp shell Turns out watchman was not installed. Haven't seen it in setup docs.

Could not find project. Are you in an Erlang project directory, or is one specified using --project?

build_info.json and project_imfo.json for the newly generated rebar3 project

#26

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[ZeeWanderer]

i am thinking it's the \\?\ on most of the paths, if you can point me where that is resolved, i probably could get it working. This might also require either changing approach to spawning rebar or using something like https://github.com/ZeeWanderer/rebar3_wrapper so that it can actually be spawned as an executable unix style

[ZeeWanderer]

Well, i still get...

[{
	"resource": "/e:/Projects/Erlang_Learning/my_first_app/src/my_first_app_sup.erl",
	"owner": "_generated_diagnostic_collection_name_#7",
	"code": {
		"value": "L0003",
		"target": {
			"$mid": 1,
			"path": "/erlang-language-platform/docs/erlang-error-index/l/L0003",
			"scheme": "https",
			"authority": "whatsapp.github.io"
		}
	},
	"severity": 8,
	"message": "Unknown application",
	"source": "elp",
	"startLineNumber": 1,
	"startColumn": 1,
	"endLineNumber": 1,
	"endColumn": 1,
	"origin": "extHost3"
},{
	"resource": "/e:/Projects/Erlang_Learning/my_first_app/src/my_first_app_sup.erl",
	"owner": "_generated_diagnostic_collection_name_#7",
	"code": {
		"value": "W0017",
		"target": {
			"$mid": 1,
			"path": "/erlang-language-platform/docs/erlang-error-index/w/W0017",
			"scheme": "https",
			"authority": "whatsapp.github.io"
		}
	},
	"severity": 4,
	"message": "Function 'supervisor:start_link/3' is undefined.",
	"source": "elp",
	"startLineNumber": 14,
	"startColumn": 5,
	"endLineNumber": 14,
	"endColumn": 26,
	"origin": "extHost3"
}]

any ideas?

build_info.json
project_info.txt

[ZeeWanderer]

Ok now linting sort of works. Is there a good centralized point to refactor normalize_abs_path into? I am not yet familiar enough with the project to identify one.

[ZeeWanderer]

OTP 28 is now generally availalbe, so compiling edb for windows is trivial now. I did have some problems with erlfmt plugin, rebar3 would simply hang after downloading it or getting it from cache. Removing that escriptized smoothly. With this PR, if you do accept it, ELP now compiles for windows and is capable of using rebar3 without any trouble.

Adding a windows pipeline would then be simple right?

[ZeeWanderer]

I have a really strange issue with elp_ide_db::eqwalizer, but other that that linting seems to work
elp.log

[facebook-github-bot]

@alanz has imported this pull request. If you are a Meta employee, you can view this in D78658932.

[alanz]

@ZeeWanderer can you run cargo fmt on this diff to update it. Our internal linters complain otherwise.

[facebook-github-bot]

@alanz has imported this pull request. If you are a Meta employee, you can view this in D78658932.

[alanz]

Thanks for formatting. I think it makes sense to land this as a step in the right direction, and then start focusing on getting the github CI to run windows as well, based on it.

I am also making some changes internally to document the need for watchman

[facebook-github-bot]

@alanz merged this pull request in e49ff32.