[solved]《this was an erlang issue》 lustre dev tools erroring out | The Gleam Programming Language | Page 1

small tusk Apr 13, 2025, 11:37 PM

#

I have two machines running the same version of erlang:

$ erl -v
Erlang/OTP 27 [erts-15.2.4] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [jit:ns]

both gleam 1.9.1. One of them compiles a project just fine, while the other shows me this:

gleam run -m lustre/dev      
   Compiled in 0.09s
    Running lustre/dev.main
=INFO REPORT==== 14-Apr-2025::01:22:57.671482 ===
    application: filepath
    exited: stopped
    type: temporary

=INFO REPORT==== 14-Apr-2025::01:22:57.703728 ===
    application: argv
    exited: stopped
    type: temporary

=INFO REPORT==== 14-Apr-2025::01:22:57.703923 ===
    application: lustre
    exited: stopped
    type: temporary

=INFO REPORT==== 14-Apr-2025::01:22:57.704118 ===
    application: gleam_otp
    exited: stopped
    type: temporary

=INFO REPORT==== 14-Apr-2025::01:22:57.704342 ===
    application: gleam_erlang
    exited: stopped
    type: temporary

=INFO REPORT==== 14-Apr-2025::01:22:57.705134 ===
    application: gleeunit
    exited: stopped
    type: temporary

=INFO REPORT==== 14-Apr-2025::01:22:57.705264 ===
    application: gleamy_lights
    exited: stopped
    type: temporary

=INFO REPORT==== 14-Apr-2025::01:22:57.705610 ===
    application: gleam_community_colour
    exited: stopped
    type: temporary

=INFO REPORT==== 14-Apr-2025::01:22:57.705799 ===
    application: envoy
    exited: stopped
    type: temporary

=INFO REPORT==== 14-Apr-2025::01:22:57.705918 ===
    application: gleam_json
    exited: stopped
    type: temporary

=INFO REPORT==== 14-Apr-2025::01:22:57.706114 ===
    application: gleam_stdlib
    exited: stopped
    type: temporary

runtime error: Erlang error

An Erlang assignment pattern did not match.

unmatched value:
  Error(Fs(#([110, 111, 32, 115, 117, 99, 104, 32, 102, 105, 108, 101, 32, 111, 114, 32, 100, 105, 114, 101, 99, 116, 111, 114, 121], [102, 115, 46, 97, 112, 112])))

stacktrace:

Now I made sure to hard-set the versions for lustre (4.6.3) and its dev tools (1.6.5) to match their working counterparts, and that didn't change this behaviour

Maybe I'm just being silly again but...

orchid yacht Apr 14, 2025, 12:14 AM

#

that error says "no such file or directory" "fs.app"

#

did you recently update your erlang install on one of these machines

small tusk Apr 14, 2025, 5:50 AM

#

just double checked. both erlang are 27.3.1-1

#

the working one and the broken one

orchid yacht Apr 14, 2025, 6:17 AM

#

thats not what i asked tho

small tusk Apr 14, 2025, 6:48 AM

#

squint ... oh right

uhm, so I have two machines erroring out, and two running fine, the one I'm currently trying on is a fresh arch install, so obviously erlang has been installed...well... yesterday

#

but I also have a windows machine showing the same error, that one hasn't had any changes in the past few months

#

the windows machine I just threw aside because i considered it a windows problem before

#

interesting stuff innit? 😭

orchid yacht Apr 14, 2025, 7:21 AM

#

the version of fs dev tool depends on changed in the latest release

#

dunno you’re not really offering up much to go off of ^.^

small tusk Apr 14, 2025, 8:46 AM

#

hmm

#

I'll be reinstalling stuff later

#

see if anything changes

#

if it does i hope I'll know whatever altered the version of the fs tool i guess

#

also thank you for reading with me, you pinned it on fs which I couldn't yesterday so that's already a step forward

orchid yacht Apr 14, 2025, 9:07 AM

#

you can find many many many hits by searching "erlang no such file or directory app"

#

are you sure you did not update your erlang version in these projects

small tusk Apr 14, 2025, 9:19 AM

#

just realised: the faulty machines have never compiled a erlang targeted gleam project before

maybe the install looks the same as on other machines but is faulty somehow?

I'm 🤏 this close to just opening my personal laptop at work to find out hahah

orchid yacht Apr 14, 2025, 9:20 AM

#

how did you install erlang?

small tusk Apr 14, 2025, 9:20 AM

#

AUR on the machine this error comes from, Winget on the machine that has the same issue

#

i might uninstall and reinstall with asdf

small tusk Apr 14, 2025, 9:22 AM

#

small tusk AUR on the machine this error comes from, Winget on the machine that has the sam...

the aur one i switched from erlang to erlang-core and all its soft deps to check if that changed stuff. it did not.

small tusk Apr 14, 2025, 9:26 AM

#

orchid yacht how did you install erlang?

do you think asdf would perform better here?

orchid yacht Apr 14, 2025, 9:27 AM

#

i have no idea im afraid

#

you have a problem with your erlang installation

#

i dont linux :3

small tusk Apr 14, 2025, 9:27 AM

#

small tusk AUR on the machine this error comes from, Winget on the machine that has the sam...

on the machines its ok on: AUR (erlang-core with all the same softdeps and versions)
and ASDF (thats an aarch64 tho)

small tusk Apr 14, 2025, 9:27 AM

#

orchid yacht i dont linux :3

eheh. the arch linux user boxed herself xD

#

i booted up my laptop and got jumpscared by my manager lmao

okay I'll go on an adventure later :3

fallen scroll Apr 14, 2025, 10:06 AM

#

small tusk do you think asdf would perform better here?

I'm Arch user, and used before asdf which worked great for installing erlang. Since a year I use mise, it has asdf backend and no difference with installation of erlang

small tusk Apr 14, 2025, 11:22 AM

#

hmm... tried asdf erlang latest (27.1-1) and proved (27.0)...

#

hmm...

orchid yacht Apr 14, 2025, 11:34 AM

#

you will need to rebuild the project if you have changed erlang version

small tusk Apr 14, 2025, 11:37 AM

#

right bunnyfacepalm hold on

#

WOOHOOO

#

Okay so steps taken:

Uninstall any aur/yay erlang version, including rebar
Reinstall both erlang and rebar using asdf (version 27 works, latest also works)
CLEAN THE PROJECT
YE IT WORK

#

thank you for your time, all <3

#

(thank you for your time hayleigh)

fallen scroll Apr 14, 2025, 11:50 AM

#

Okay so steps taken:

Uninstall any aur/yay erlang version, including rebar
👍

small tusk Apr 14, 2025, 11:50 AM

#

ye that was the entire problem haha

#

now looking into

#

windows

#

for which i guess mise would be available

fallen scroll Apr 14, 2025, 11:52 AM

#

I use mise, is more versatile. One tool to fit all my needs

small tusk Apr 14, 2025, 11:52 AM

#

fallen scroll > Okay so steps taken: > 1. Uninstall any aur/yay erlang version, including reba...

still wondering why the other machine works okay with the aur install...

but i guess this is one of those "if it works" cases

#

[solved]《this was an erlang issue》 lustre dev tools erroring out

#

clearing lustres name

fallen scroll Apr 14, 2025, 11:54 AM

#

I dont know windows so cant help

small tusk Apr 14, 2025, 11:54 AM

#

nawh that's alright

#

don't expect it to be much trouble, plus I only dev on windows if I absolutely have to

fallen scroll Apr 14, 2025, 11:55 AM

#

try mise and will see

#

I see u're using bun, mise can install lots of langs and tools

small tusk Apr 14, 2025, 12:11 PM

#

yeah I must say I never considered mise, but now that I've seen its docs I think it'll replace asdf for me

#[solved]《this was an erlang issue》 lustre dev tools erroring out