openai/codex · error · RequirementsCompositionError

failed to compose requirements field `{field}` between {exis

Error message

failed to compose requirements field `{field}` between {existing_source} and {incoming_source}: {message}

What it means

Error "failed to compose requirements field `{field}` between {existing_source} and {incoming_source}: {message}" thrown in openai/codex.

Source

Thrown at codex-rs/config/src/requirements_layers/stack.rs:43

use toml::Value as TomlValue;

use super::hooks::HookDirectoryField;
use super::hooks::HookMergeState;
use super::layer::ComposableRequirementsLayer;
use super::layer::RequirementsLayerEntry;
use super::models::AutoReviewModelsMergeState;
use super::permissions::DenyReadMergeState;

#[derive(Debug, Error, PartialEq, Eq)]
pub enum RequirementsCompositionError {
    #[error("failed to parse requirements layer {layer_source}: {message}")]
    Parse {
        layer_source: RequirementSource,
        message: String,
    },
    #[error("failed to parse merged requirements: {message}")]
    ComposedParse { message: String },
    #[error(
        "failed to compose requirements field `{field}` between {existing_source} and {incoming_source}: {message}"
    )]
    Conflict {
        field: String,
        existing_source: RequirementSource,
        incoming_source: RequirementSource,
        message: String,
    },
}

impl From<RequirementsCompositionError> for io::Error {
    fn from(error: RequirementsCompositionError) -> Self {
        io::Error::new(io::ErrorKind::InvalidData, error)
    }
}

pub fn compose_requirements(
    layers: impl IntoIterator<Item = RequirementsLayerEntry>,

View on GitHub (pinned to 339751715c)

Solutions

1. Resolve the conflicting values for field `{field}` between the two reported sources.

When it happens

Trigger: Thrown at codex-rs/config/src/requirements_layers/stack.rs:43 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/02815c6201c31071. Report an issue: GitHub.