refactor(tvix/eval/io): use io::Error instead of tvix_eval errors r/6171

We didn't return anything useful other than ErrorKind::IO anyways.

We can use io::ErrorKind::Unsupported for DummyIO.

Fixes b/271.

Change-Id: Icb231e9b38168e8b6fa473bfa405d160357b317f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8602
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>

1 files changed, 6 insertions, 9 deletions

diff --git a/tvix/cli/src/nix_compat.rs b/tvix/cli/src/nix_compat.rs
index 4141e0a21759..ce352f0a964c 100644
--- a/tvix/cli/src/nix_compat.rs
+++ b/tvix/cli/src/nix_compat.rs
@@ -11,7 +11,7 @@ use std::process::Command;
 use std::{io, path::PathBuf};
 
 use smol_str::SmolStr;
-use tvix_eval::{ErrorKind, EvalIO, FileType, StdIO};
+use tvix_eval::{EvalIO, FileType, StdIO};
 
 /// Compatibility implementation of [`EvalIO`] that uses C++ Nix to
 /// write files to the Nix store.
@@ -33,16 +33,13 @@ impl EvalIO for NixCompatIO {
     }
 
     // Pass path imports through to `nix-store --add`
-    fn import_path(&mut self, path: &Path) -> Result<PathBuf, ErrorKind> {
+    fn import_path(&mut self, path: &Path) -> Result<PathBuf, io::Error> {
         let path = path.to_owned();
         if let Some(path) = self.import_cache.get(&path) {
             return Ok(path.to_path_buf());
         }
 
-        let store_path = self.add_to_store(&path).map_err(|error| ErrorKind::IO {
-            error: std::rc::Rc::new(error),
-            path: Some(path.to_path_buf()),
-        })?;
+        let store_path = self.add_to_store(&path)?;
 
         self.import_cache.insert(path, store_path.clone());
 
@@ -50,7 +47,7 @@ impl EvalIO for NixCompatIO {
     }
 
     // Pass the rest of the functions through to `Self::underlying`
-    fn path_exists(&mut self, path: PathBuf) -> Result<bool, ErrorKind> {
+    fn path_exists(&mut self, path: PathBuf) -> Result<bool, io::Error> {
         if path.starts_with("/__corepkgs__") {
             return Ok(true);
         }
@@ -58,7 +55,7 @@ impl EvalIO for NixCompatIO {
         self.underlying.path_exists(path)
     }
 
-    fn read_to_string(&mut self, path: PathBuf) -> Result<String, ErrorKind> {
+    fn read_to_string(&mut self, path: PathBuf) -> Result<String, io::Error> {
         // Bundled version of corepkgs/fetchurl.nix. This workaround
         // is similar to what cppnix does for passing the path
         // through.
@@ -72,7 +69,7 @@ impl EvalIO for NixCompatIO {
         self.underlying.read_to_string(path)
     }
 
-    fn read_dir(&mut self, path: PathBuf) -> Result<Vec<(SmolStr, FileType)>, ErrorKind> {
+    fn read_dir(&mut self, path: PathBuf) -> Result<Vec<(SmolStr, FileType)>, io::Error> {
         self.underlying.read_dir(path)
     }
 }