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Erlang target: "unbound variable" error when referencing a const record inside a case expression #5261

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#5302
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Erlang target: "unbound variable" error when referencing a const record inside a case expression#5261
Bug
#5302
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@IgorCastejon

Description

@IgorCastejon
IgorCastejon
opened on Jan 4, 2026

Referencing a const record inside a case expression causes a runtime crash in the Erlang target. This only seems to occur under a very specific set of conditions:

  • The case subject is a const record;
  • A case clause matches on a constructor of that record type;
  • The result branch (->) of that clause attempts to reference the same const.

In this scenario, the Erlang code generator mistakenly treats the reference to the const as a local variable that hasn't been defined, leading to an unbound variable error.

Reproduction

Gleam code: (Playground link)

pub type Wibble {
  Wibble
}

const wibble = Wibble

pub fn main() {
  case wibble {
    Wibble -> wibble
  }
}

Generated Erlang code:

-module(const_bug_reproducer).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/const_bug_reproducer.gleam").
-export([main/0]).
-export_type([wibble/0]).

-type wibble() :: wibble.

-file("src/const_bug_reproducer.gleam", 7).
-spec main() -> wibble().
main() ->
    case wibble of
        wibble ->
            Wibble
    end.

Runtime error:

Compiling const_bug_reproducer
src/const_bug_reproducer.gleam:12:13: variable 'Wibble' is unbound
error: Shell command failure

There was a problem when running the shell command `escript`.

Versions

  • Gleam: v1.14.0
  • OS: Linux Mint
  • Runtime: Erlang/OTP 28

Logs

Click to toggle logs content. 
GLEAM_LOG=trace gleam run
DEBUG download_deps: locking_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam.lock"
TRACE download_deps: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/gleam.toml"
DEBUG download_deps: reading_manifest_toml
TRACE download_deps: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/manifest.toml"
TRACE download_deps: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/packages.toml"
DEBUG download_deps: locking_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/gleam-dev-erlang.lock"
DEBUG download_deps: locking_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/gleam-dev-javascript.lock"
DEBUG download_deps: locking_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/gleam-prod-erlang.lock"
DEBUG download_deps: locking_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/gleam-prod-javascript.lock"
DEBUG download_deps: locking_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/gleam-lsp-erlang.lock"
DEBUG download_deps: locking_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/gleam-lsp-javascript.lock"
TRACE download_deps: writing_file path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/packages.toml"
TRACE reading_file path="/home/igor/Documents/projects/const_bug_reproducer/gleam.toml"
TRACE reading_file path="/home/igor/Documents/projects/const_bug_reproducer/gleam.toml"
TRACE reading_file path="/home/igor/Documents/projects/const_bug_reproducer/gleam.toml"
 INFO Compiling packages
DEBUG locking_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/gleam-dev-erlang.lock"
TRACE reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_version"
TRACE reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/gleam.toml"
TRACE compile{package=gleam_stdlib}:load: gleam_source_files "/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src"
TRACE compile{package=gleam_stdlib}:load: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src"
TRACE compile{package=gleam_stdlib}:load: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@dict.cache_meta"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@uri.cache_meta"
TRACE compile{package=gleam_stdlib}:load: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam/dynamic"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@list.cache_meta"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@option.cache_meta"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@dynamic.cache_meta"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@bytes_tree.cache_meta"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@order.cache_meta"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@int.cache_meta"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@bool.cache_meta"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@bit_array.cache_meta"
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TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@string.cache_meta"
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TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@pair.cache_meta"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@string_tree.cache_meta"
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TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@float.cache_meta"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@io.cache_meta"
TRACE compile{package=gleam_stdlib}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@dynamic@decode.cache_meta"
TRACE compile{package=gleam_stdlib}: CacheFiles::modules_with_meta_files "/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts"
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DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/order
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@order.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@order.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/float
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TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@float.cache_inline"
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TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@int.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@int.cache_inline"
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TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@option.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@option.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/dict
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@dict.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@dict.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/list
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@list.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@list.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/string_tree
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@string_tree.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@string_tree.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/string
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@string.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@string.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/bit_array
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@bit_array.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@bit_array.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/bool
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@bool.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@bool.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/bytes_tree
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@bytes_tree.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@bytes_tree.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/dynamic
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@dynamic.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@dynamic.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/dynamic/decode
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@dynamic@decode.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@dynamic@decode.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/function
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@function.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@function.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/io
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@io.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@io.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/pair
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@pair.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@pair.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/result
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@result.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@result.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/set
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@set.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@set.cache_inline"
DEBUG compile{package=gleam_stdlib}: module_to_load_from_cache module=gleam/uri
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@uri.cache"
TRACE compile{package=gleam_stdlib}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/_gleam_artefacts/gleam@uri.cache_inline"
 INFO compile{package=gleam_stdlib}: analysing_modules count=0
DEBUG compile{package=gleam_stdlib}: performing_code_generation
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DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@order.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@option.erl"
TRACE compile{package=gleam_stdlib}: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@float.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@string.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@function.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@string_tree.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam_stdlib.erl"
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DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@list.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/dict.mjs"
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DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@pair.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@bit_array.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@int.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@result.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@dict.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@uri.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@set.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@dynamic.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@io.erl"
DEBUG compile{package=gleam_stdlib}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam@dynamic@decode.erl"
TRACE compile{package=gleam_stdlib}: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleam_stdlib/src/gleam/dynamic"
DEBUG compile{package=gleam_stdlib}: skipping_entrypoint_generation
DEBUG compile{package=gleam_stdlib}: no_erlang_to_compile
TRACE compile{package=gleam_stdlib}: writing_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleam_stdlib/ebin/gleam_stdlib.app"
TRACE reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/gleam.toml"
TRACE compile{package=gleeunit}:load: gleam_source_files "/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src"
TRACE compile{package=gleeunit}:load: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src"
TRACE compile{package=gleeunit}:load: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit"
TRACE compile{package=gleeunit}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit.cache_meta"
TRACE compile{package=gleeunit}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit@should.cache_meta"
TRACE compile{package=gleeunit}:load: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit/internal"
TRACE compile{package=gleeunit}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit@internal@gleam_panic.cache_meta"
TRACE compile{package=gleeunit}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit@internal@reporting.cache_meta"
TRACE compile{package=gleeunit}: CacheFiles::modules_with_meta_files "/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts"
TRACE compile{package=gleeunit}: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts"
TRACE compile{package=gleeunit}: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit"
TRACE compile{package=gleeunit}: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit/internal"
DEBUG compile{package=gleeunit}: module_to_load_from_cache module=gleeunit
TRACE compile{package=gleeunit}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit.cache"
TRACE compile{package=gleeunit}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit.cache_inline"
DEBUG compile{package=gleeunit}: module_to_load_from_cache module=gleeunit/internal/gleam_panic
TRACE compile{package=gleeunit}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit@internal@gleam_panic.cache"
TRACE compile{package=gleeunit}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit@internal@gleam_panic.cache_inline"
DEBUG compile{package=gleeunit}: module_to_load_from_cache module=gleeunit/internal/reporting
TRACE compile{package=gleeunit}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit@internal@reporting.cache"
TRACE compile{package=gleeunit}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit@internal@reporting.cache_inline"
DEBUG compile{package=gleeunit}: module_to_load_from_cache module=gleeunit/should
TRACE compile{package=gleeunit}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit@should.cache"
TRACE compile{package=gleeunit}: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/_gleam_artefacts/gleeunit@should.cache_inline"
 INFO compile{package=gleeunit}: analysing_modules count=0
DEBUG compile{package=gleeunit}: performing_code_generation
DEBUG compile{package=gleeunit}: copying_native_source_files
TRACE compile{package=gleeunit}: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src"
DEBUG compile{package=gleeunit}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit.erl"
DEBUG compile{package=gleeunit}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit_progress.erl"
TRACE compile{package=gleeunit}: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit"
DEBUG compile{package=gleeunit}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit@should.erl"
DEBUG compile{package=gleeunit}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit@internal@gleam_panic.erl"
DEBUG compile{package=gleeunit}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit@internal@reporting.erl"
DEBUG compile{package=gleeunit}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit_ffi.erl"
DEBUG compile{package=gleeunit}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit_ffi.mjs"
TRACE compile{package=gleeunit}: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit/internal"
DEBUG compile{package=gleeunit}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit/internal/gleeunit_gleam_panic_ffi.erl"
DEBUG compile{package=gleeunit}: skipping_unchanged_native_file_unchanged file="/home/igor/Documents/projects/const_bug_reproducer/build/packages/gleeunit/src/gleeunit/internal/gleeunit_gleam_panic_ffi.mjs"
DEBUG compile{package=gleeunit}: skipping_entrypoint_generation
DEBUG compile{package=gleeunit}: no_erlang_to_compile
TRACE compile{package=gleeunit}: writing_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/gleeunit/ebin/gleeunit.app"
TRACE compile{package=const_bug_reproducer}:load: gleam_source_files "/home/igor/Documents/projects/const_bug_reproducer/src"
TRACE compile{package=const_bug_reproducer}:load: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/src"
TRACE compile{package=const_bug_reproducer}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/src/const_bug_reproducer.gleam"
TRACE compile{package=const_bug_reproducer}:load: gleam_source_files "/home/igor/Documents/projects/const_bug_reproducer/test"
TRACE compile{package=const_bug_reproducer}:load: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/test"
TRACE compile{package=const_bug_reproducer}:load: reading_file path="/home/igor/Documents/projects/const_bug_reproducer/test/const_bug_reproducer_test.gleam"
TRACE compile{package=const_bug_reproducer}:load: gleam_source_files "/home/igor/Documents/projects/const_bug_reproducer/dev"
TRACE compile{package=const_bug_reproducer}: CacheFiles::modules_with_meta_files "/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/_gleam_artefacts"
TRACE compile{package=const_bug_reproducer}: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/_gleam_artefacts"
DEBUG compile{package=const_bug_reproducer}: new_module_to_be_compiled module=const_bug_reproducer
DEBUG compile{package=const_bug_reproducer}: new_module_to_be_compiled module=const_bug_reproducer_test
  Compiling const_bug_reproducer
 INFO compile{package=const_bug_reproducer}: analysing_modules count=2
DEBUG compile{package=const_bug_reproducer}: Type checking module="const_bug_reproducer"
DEBUG compile{package=const_bug_reproducer}: built glob set; 1 literals, 0 basenames, 0 extensions, 1 prefixes, 0 suffixes, 0 required extensions, 0 regexes
DEBUG compile{package=const_bug_reproducer}: built glob set; 1 literals, 0 basenames, 0 extensions, 1 prefixes, 0 suffixes, 0 required extensions, 0 regexes
DEBUG compile{package=const_bug_reproducer}: Type checking module="const_bug_reproducer_test"
DEBUG compile{package=const_bug_reproducer}: built glob set; 1 literals, 0 basenames, 0 extensions, 1 prefixes, 0 suffixes, 0 required extensions, 0 regexes
DEBUG compile{package=const_bug_reproducer}: performing_code_generation
DEBUG compile{package=const_bug_reproducer}: copying_native_source_files
TRACE compile{package=const_bug_reproducer}: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/src"
TRACE compile{package=const_bug_reproducer}: reading_directory path="/home/igor/Documents/projects/const_bug_reproducer/test"
DEBUG compile{package=const_bug_reproducer}: erlang_entrypoint_already_exists
DEBUG compile{package=const_bug_reproducer}: Generated Erlang module name="const_bug_reproducer.erl"
TRACE compile{package=const_bug_reproducer}: writing_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/_gleam_artefacts/const_bug_reproducer.erl"
DEBUG compile{package=const_bug_reproducer}: Generated Erlang module name="const_bug_reproducer_test.erl"
TRACE compile{package=const_bug_reproducer}: writing_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/_gleam_artefacts/const_bug_reproducer_test.erl"
DEBUG compile{package=const_bug_reproducer}: compiling_erlang
TRACE compile{package=const_bug_reproducer}: writing_file path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/_gleam_artefacts/gleam@@compile.erl"
TRACE compile{package=const_bug_reproducer}: spawn_beam_compiler escript_path="/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/_gleam_artefacts/gleam@@compile.erl"
DEBUG compile{package=const_bug_reproducer}: call_beam_compiler args="{\"/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang\", \"/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/ebin\", [\"/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/_gleam_artefacts/const_bug_reproducer_test.erl\", \"/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/_gleam_artefacts/const_bug_reproducer.erl\"]}"
{compiling,"/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/_gleam_artefacts/const_bug_reproducer_test.erl"}
{compiling,"/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/_gleam_artefacts/const_bug_reproducer.erl"}
src/const_bug_reproducer.gleam:12:13: variable 'Wibble' is unbound
{failed,"/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/_gleam_artefacts/const_bug_reproducer.erl"}
{compiled,const_bug_reproducer_test,
          "/home/igor/Documents/projects/const_bug_reproducer/build/dev/erlang/const_bug_reproducer/ebin/const_bug_reproducer_test.beam"}
ERROR Failed error=ShellCommand { program: "escript", reason: Unknown }
error: Shell command failure

There was a problem when running the shell command `escript`.

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