✔ Basic-cli 18 downloads, but then says not found · beginners

Stream: beginners

Topic: ✔ Basic-cli 18 downloads, but then says not found

Ian McLerran (Dec 30 2024 at 17:38):

I am trying to experiment with the PI release of basic-cli v0.18.0, but getting a strange error message:

After experimenting a bit to get something which would parse without errors, I was able to put together a main! function which passed the parsing step, and roc downloaded the tarball for v18. However, after downloading, the program failed to compile with the following error:

── NO PLATFORM in main.roc ──────────────

I could not find a platform based on your input file.

Does the module header have an entry that looks like this?

    app [main] { pf: platform "…path or URL to platform…" }

Tip: The following part of the tutorial has an example of specifying a
platform:  <https://www.roc-lang.org/tutorial#building-an-application>%

Here is my code:

app [main!] { cli: platform "https://github.com/roc-lang/basic-cli/releases/download/0.18.0/0APbwVN1_p1mJ96tXjaoiUCr8NBGamr8G8Ac_DrXR-o.tar.br" }

import cli.Stdout

main! = \_args ->
    List.forEachTry! [1, 2, 3] \i ->
        Stdout.line! "Hello, $(i |> Num.toStr)!"

I am on roc version:

roc nightly pre-release, built from commit 2e2be455080 on Sat Dec 28 10:01:37 UTC 2024

Anton (Dec 30 2024 at 17:44):

Yeah, I planned to make a nice upgrade guide for the official release of 0.18.0, I'll take a look.

Anton (Dec 30 2024 at 17:49):

Your code works for me, would you just like a better error message for your original code?

Anton (Dec 30 2024 at 17:53):

I'm also going to try to adapt roc claude agent so it can make the upgrade but no promises on that :)

Ian McLerran (Dec 30 2024 at 18:15):

Well, its not clear to me why this code doesn't work, based on the error message. If I had to guess, I'd think maybe I need to be building roc from source on the correct branch, rather than using the nightly.

If that's not it, I'm really at a loss for why my code doesn't work. The error message asks if I have a module header, which I do, so it does seem like a better error message would be helpful.

Anton (Dec 30 2024 at 18:19):

Just for clarity; Does the code snippet that you posted work when you run it?

Ian McLerran (Dec 30 2024 at 18:22):

Nope, it doesn't. I produces the "NO PLATFORM in main.roc" error message

Anton (Dec 30 2024 at 18:22):

I was trying with latest main, let me check with nightly

Ian McLerran (Dec 30 2024 at 18:24):

Guess I need to be on main! :+1:

Anton (Dec 30 2024 at 18:25):

It works with that nightly on linux, are you on macos?

Anton (Dec 30 2024 at 18:26):

This might be some macos naming resolution difference

Ian McLerran (Dec 30 2024 at 18:28):

Yep, I am indeed... :rolling_eyes:

Ian McLerran (Dec 30 2024 at 18:32):

Yeah, can confirm I also have the same issue on both the nightly and main latest.

Anton (Dec 30 2024 at 18:33):

I'll investigate and add some more macos testing with the final release archive so we catch this earlier.
You should be able to use basic-cli from source, you can build basic-cli with:

./jump-start.sh
roc build.roc --linker=legacy

Ayaz Hafiz (Dec 30 2024 at 18:33):

are you on an apple silicon mac? Weirdly the program works for me (M1 pro)

Ian McLerran (Dec 30 2024 at 18:34):

Yep, I'm on an M1 air...

Ayaz Hafiz (Dec 30 2024 at 18:34):

if you nuke $HOME/.cache/roc/packages/ does that resolve it? I wonder if there's some weird state

Ian McLerran (Dec 30 2024 at 18:35):

Lemme check

Ayaz Hafiz (Dec 30 2024 at 18:35):

actually i guess before that - can you share what $HOME/.cache/roc/packages/github.com/roc-lang/basic-cli/releases/download/0.18.0/0APbwVN1_p1mJ96tXjaoiUCr8NBGamr8G8Ac_DrXR-o/ looks like?