Lune/Luau does not like a Lua file that has a shebang at the start

[kittywitch]

syntax error: /<irrelevant>/third-party/markdown/markdown:1: Expected identifier when parsing expression, got '#'

Relevant file: https://github.com/mpeterv/markdown/blob/master/markdown.lua
#!/usr/bin/env lua

For Lua(u) libraries intended to run standalone as command-line tools AND to be used as libraries, this can cause problems. It would be ideal if the require system were capable of ignoring that shebang.

[CompeyDev]

I believe Lune specifically strips out the shebang before executing any code. Are you sure this is being run through Lune and not Luau / Lua? Given the shebang linking to lua, I'd like you to confirm.

[kittywitch]

I don't even have luau/lua/... in $PATH for this project.

[kat@goliath:~/src/meepy]$ make run
lune run ./
syntax error: /home/kat/src/meepy/third-party/markdown/markdown:1: Expected identifier when parsing expression, got '#'
[Stack Begin]
    Script '[C]'
    Script '__mlua_async_poll', Line 27
    Script '__mlua_require', Line 22
    Script '/home/kat/src/meepy', Line 2
[Stack End]

make: *** [Makefile:2: run] Error 1

[kat@goliath:~/src/meepy]$ lua
The program 'lua' is currently not installed. It is provided by
several packages. You can install it by typing one of the following:
  nix-env -iA nixpkgs.luajit_2_0.out
  nix-env -iA nixpkgs.luajit.out
  nix-env -iA nixpkgs.luajit_openresty.out
  nix-env -iA nixpkgs.lua51Packages.lua.out
  nix-env -iA nixpkgs.lua53Packages.lua.out
  nix-env -iA nixpkgs.lua5_4_compat.out
  nix-env -iA nixpkgs.lua.out
  nix-env -iA nixpkgs.lua52Packages.lua.out
  nix-env -iA nixpkgs.lua5_3_compat.out
  nix-env -iA nixpkgs.lua54Packages.lua.out

[kat@goliath:~/src/meepy]$ lune --version
lune 0.10.4

kat@goliath:~/src/meepy]$ luau
The program 'luau' is currently not installed. You can install it
by typing:
  nix-env -iA nixpkgs.luau.out

Or run it once with:
  nix-shell -p luau.out --run 'luau ..

[CompeyDev]

Oddly so, I cannot reproduce this locally.

As previously stated, Lune specifically strips out any shebangs:

lune/crates/lune/src/rt/runtime.rs

Lines 398 to 412 in 43484f1

	fn strip_shebang(mut contents: Vec<u8>) -> Vec<u8> {
	if contents.starts_with(b"#!")
	&& let Some(first_newline_idx) = contents
	.iter()
	.enumerate()
	.find_map(|(idx, c)| if *c == b'\n' { Some(idx) } else { None })
	{
	// NOTE: We keep the newline here on purpose to preserve
	// correct line numbers in stack traces, the only reason
	// we strip the shebang is to get the lua script to parse
	// and the extra newline is not really a problem for that
	contents.drain(..first_newline_idx);
	}
	contents
	}

lune/crates/lune/src/rt/runtime.rs

Lines 322 to 330 in 43484f1

	let contents = fs::read(module_path.target())
	.await
	.into_lua_err()
	.with_context(|_| {
	format!("Failed to read file at path \"{}\"", module_path.target())
	})?;
	let module_name = format!("{FILE_CHUNK_PREFIX}{module_path}");
	let module_contents = strip_shebang(contents);

[kittywitch]

Does it do so when a file is required? That is the problem here.

Files in my init.luau:

local template = require("@self/third-party/lua-template/template");
local markdown = require("@self/third-party/markdown/markdown");

Edit: huh, so it does? huh.