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use std::{error, fmt::Display, rc::Rc};
use tvix_derivation::DerivationError;
#[derive(Debug)]
pub enum Error {
// Errors related to derivation construction
DuplicateOutput(String),
ConflictingOutputTypes,
DuplicateEnvVar(String),
ShadowedOutput(String),
InvalidDerivation(DerivationError),
InvalidOutputHashMode(String),
}
impl Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Error::DuplicateOutput(name) => {
write!(f, "an output with the name '{name}' is already defined")
}
Error::ConflictingOutputTypes => write!(
f,
"fixed-output derivations can only have the default `out`-output"
),
Error::DuplicateEnvVar(name) => write!(
f,
"the environment variable '{name}' has already been set in this derivation"
),
Error::ShadowedOutput(name) => write!(
f,
"the environment variable '{name}' shadows the name of an output"
),
Error::InvalidDerivation(error) => write!(f, "invalid derivation parameters: {error}"),
Error::InvalidOutputHashMode(mode) => write!(
f,
"invalid output hash mode: '{mode}', only 'recursive' and 'flat` are supported"
),
}
}
}
impl error::Error for Error {
fn source(&self) -> Option<&(dyn error::Error + 'static)> {
None
}
}
impl From<Error> for tvix_eval::ErrorKind {
fn from(err: Error) -> Self {
tvix_eval::ErrorKind::TvixError(Rc::new(err))
}
}
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