Sligthly rough UX on luajit

[fmbarina]

I just installed lux with cargo install lux-cli --locked as the tutorial suggested, tried to create a project, and was a little confused at the results. I wrote these down chronologically to illustrate.

lx new went fine, and lx debug project seemingly showed everything ok:

❯ lx debug project
Project name: test
Project version: 0.1.0-1
Project location: /home/fmbarina/Code/id_fmbarina/test

Then I tried the first thing that came to mind, running a repl:

❯ lx lua

thread 'main' panicked at /home/fmbarina/.local/share/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/lux-cli-0.3.10/src/bin/lx.rs:63:75:
called `Result::unwrap()` on an `Err` value: lua version not set! Please provide a version through `--lua-version <ver>`

Location:
    /home/fmbarina/.local/share/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/lux-cli-0.3.10/src/run_lua.rs:43:13
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Alright, I assumed it would know my lua version or have a self contained one, that's on me.

So I try looking up how to specify my lua version. Maybe lx help lua:

❯ lx help lua
Run lua, with the `LUA_PATH` and `LUA_CPATH` set to the specified lux tree

Usage: lx lua [OPTIONS] [ARGS]...

Arguments:
  [ARGS]...  Arguments to pass to Lua. See `lua -h`

Options:
      --lua <LUA>  Path to the Lua interpreter to use
      --help       Print help
      --no-lock    Ignore the project's lockfile and don't create one
      --only-deps  Build only the dependencies

There's no --lua-version here. Again, on me, back to lx --help.

      --lua-version <ver>             Which Lua installation to use

That didn't help as much as I expected. What counts as a valid installation? Maybe I should just try whatever?

❯ lx --lua-version luajit lua

thread 'main' panicked at /home/fmbarina/.local/share/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/lux-cli-0.3.10/src/bin/lx.rs:63:75:
called `Result::unwrap()` on an `Err` value: could not parse Lua version from 'lua -v' output

Location:
    /home/fmbarina/.local/share/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/lux-cli-0.3.10/src/run_lua.rs:61:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Ok, I really need to know what counts as a lua version first. At this point I tried searching the repo and found that --lua-version jit should(?) be valid, except it wasn't—maybe it was outdated?

❯ lx --lua-version jit lua

thread 'main' panicked at /home/fmbarina/.local/share/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/lux-cli-0.3.10/src/bin/lx.rs:63:75:
called `Result::unwrap()` on an `Err` value: could not parse Lua version from 'lua -v' output

Location:
    /home/fmbarina/.local/share/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/lux-cli-0.3.10/src/run_lua.rs:61:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Same for --lua-version jit52. Randomly, I decided to test jit51:

❯ lx --lua-version jit51 lua
error: invalid value 'jit51' for '--lua-version <ver>': unrecognized Lua version. Allowed versions: '5.1', '5.2', '5.3', '5.4', 'jit', 'jit52'.

For more information, try '--help'.

Finally, I got the list of valid options.

I guess the luajit version I have installed isn't compatible. I did try install-lua with 5.1 and jit52, but I got a missing dependency error and a panic, respectively. Installing lua via my package manager "fixed" it.

I initially intended to open an issue, but I wasn't sure what to focus on, here. I recognize that lux is a very young project, so this hasn't discouraged me from using it, but I'd like to communicate this confusion.

Did I just go about this completely backwards and misunderstand the tool?

[mrcjkb]

Hey 👋

Thanks for the feedback. I think it's definitely worth creating an issue. I'll transfer this 😄

• Sligthly rough UX on luajit #626