refactor(tvix): introduce nix-compat crate

Move nixbase32 and store_path into this.

This allows //tvix/cli to not pull in //tvix/store for now.

Change-Id: Id3a32867205d95794bc0d33b21d4cb3d9bafd02a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7964
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>

tvix/derivation/src/derivation.rs

@@ -1,12 +1,12 @@
 use crate::output::{Hash, Output};
 use crate::write;
 use crate::DerivationError;
+use nix_compat::nixbase32;
+use nix_compat::store_path::{StorePath, STORE_DIR};
 use serde::{Deserialize, Serialize};
 use sha2::{Digest, Sha256};
 use std::collections::BTreeSet;
 use std::{collections::BTreeMap, fmt, fmt::Write};
-use tvix_store::nixbase32;
-use tvix_store::store_path::{StorePath, STORE_DIR};
 
 #[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
 pub struct Derivation {

tvix/derivation/src/errors.rs

@@ -1,5 +1,5 @@
+use nix_compat::{nixbase32::Nixbase32DecodeError, store_path::ParseStorePathError};
 use thiserror::Error;
-use tvix_store::{nixbase32::Nixbase32DecodeError, store_path::ParseStorePathError};
 
 /// Errors that can occur during the validation of Derivation structs.
 #[derive(Debug, Error, PartialEq)]

tvix/derivation/src/output.rs

@@ -1,5 +1,5 @@
+use nix_compat::{nixbase32, store_path::StorePath};
 use serde::{Deserialize, Serialize};
-use tvix_store::{nixbase32, store_path::StorePath};
 
 use crate::OutputError;
 

tvix/derivation/src/tests/mod.rs

@@ -1,12 +1,12 @@
 use crate::derivation::Derivation;
 use crate::output::{Hash, Output};
+use nix_compat::store_path::StorePath;
 use std::collections::BTreeSet;
 use std::fs::File;
 use std::io::Read;
 use std::path::Path;
 use test_case::test_case;
 use test_generator::test_resources;
-use tvix_store::store_path::StorePath;
 
 const RESOURCES_PATHS: &str = "src/tests/derivation_tests";
 

tvix/derivation/src/validate.rs

@@ -1,5 +1,5 @@
 use crate::{derivation::Derivation, DerivationError};
-use tvix_store::store_path::StorePath;
+use nix_compat::store_path::StorePath;
 
 impl Derivation {
     /// validate ensures a Derivation struct is properly populated,