snix_glue/builtins/
errors.rs

1//! Contains errors that can occur during evaluation of builtins in this crate
2use nix_compat::{
3    nixhash::{self, NixHash},
4    store_path::BuildStorePathError,
5};
6use reqwest::Url;
7use snix_castore::import;
8use std::{path::PathBuf, sync::Arc};
9use thiserror::Error;
10
11/// Errors related to derivation construction
12#[derive(Debug, Error)]
13pub enum DerivationError {
14    #[error("an output with the name '{0}' is already defined")]
15    DuplicateOutput(String),
16    #[error("fixed-output derivations can only have the default `out`-output")]
17    ConflictingOutputTypes,
18    #[error("the environment variable '{0}' has already been set in this derivation")]
19    DuplicateEnvVar(String),
20    #[error("invalid derivation parameters: {0}")]
21    InvalidDerivation(#[from] nix_compat::derivation::DerivationError),
22    #[error("invalid output hash: {0}")]
23    InvalidOutputHash(#[from] nixhash::Error),
24    #[error("invalid output hash mode: '{0}', only 'recursive' and 'flat` are supported")]
25    InvalidOutputHashMode(String),
26    #[error(
27        "Cannot have an environment variable named '__json'. This key is reserved for encoding structured attrs"
28    )]
29    StructuredAttrsJsonKeyPresent,
30}
31
32impl From<DerivationError> for snix_eval::ErrorKind {
33    fn from(err: DerivationError) -> Self {
34        snix_eval::ErrorKind::SnixError(Arc::from(err))
35    }
36}
37
38#[derive(Debug, Error)]
39pub enum FetcherError {
40    #[error("hash mismatch in file downloaded from {url}:\n  wanted: {wanted}\n     got: {got}")]
41    HashMismatch {
42        url: Url,
43        wanted: NixHash,
44        got: NixHash,
45    },
46
47    #[error("Invalid hash type '{0}' for fetcher")]
48    InvalidHashType(&'static str),
49
50    #[error("Unable to parse URL: {0}")]
51    InvalidUrl(#[from] url::ParseError),
52
53    #[error(transparent)]
54    Http(#[from] reqwest::Error),
55
56    #[error(transparent)]
57    Io(#[from] std::io::Error),
58
59    #[error(transparent)]
60    Import(#[from] snix_castore::import::IngestionError<import::archive::Error>),
61
62    #[error("Error calculating store path for fetcher output: {0}")]
63    StorePath(#[from] BuildStorePathError),
64}
65
66/// Errors related to `builtins.path` and `builtins.filterSource`,
67/// a.k.a. "importing" builtins.
68#[derive(Debug, Error)]
69pub enum ImportError {
70    #[error("non-file '{0}' cannot be imported in 'flat' mode")]
71    FlatImportOfNonFile(PathBuf),
72
73    #[error("hash mismatch at ingestion of '{0}', expected: '{1}', got: '{2}'")]
74    HashMismatch(PathBuf, NixHash, NixHash),
75
76    #[error("path '{}' is not absolute or invalid", .0.display())]
77    PathNotAbsoluteOrInvalid(PathBuf),
78}
79
80impl From<ImportError> for snix_eval::ErrorKind {
81    fn from(err: ImportError) -> Self {
82        snix_eval::ErrorKind::SnixError(Arc::from(err))
83    }
84}
snix_glue/builtins/errors.rs

snix_glue/builtins/
errors.rs
