Remove nix dependency (#1237)

Author: ajeetdsouza

Cargo.lock

@@ -32,12 +32,6 @@ ouroboros = "0.18.3"
 serde = { version = "1.0.116", features = ["derive"] }
 time = { version = "0.3.47", default-features = false, features = ["parsing", "macros", "std"] }
 
-[target.'cfg(unix)'.dependencies]
-nix = { version = "0.31.2", default-features = false, features = [
-    "fs",
-    "user",
-] }
-
 [target.'cfg(windows)'.dependencies]
 which = "8.0.2"
 

Cargo.toml

@@ -48,7 +48,7 @@ pub(crate) struct ImportError {
 /// format. Doesn't abort on per-record errors — bad rows are skipped, the
 /// rest of the import continues. After the iteration completes successfully,
 /// the database is deduplicated and aged.
-pub(crate) fn run<I: Importer>(importer: &I, db: &mut Database) -> Result<()> {
+pub(crate) fn run(importer: &impl Importer, db: &mut Database) -> Result<()> {
     let stderr = io::stderr();
     let mut stderr = stderr.lock();
 
@@ -60,7 +60,7 @@ pub(crate) fn run<I: Importer>(importer: &I, db: &mut Database) -> Result<()> {
                     Some(path) => format!("{}:{}", path.display(), e.line_num),
                     None => format!("line {}", e.line_num),
                 };
-                let _ = writeln!(stderr, "{location}: {:#}", e.source);
+                _ = writeln!(stderr, "{location}: {:#}", e.source);
             }
         }
     }

src/import.rs

@@ -110,7 +110,7 @@ impl Iterator for Iter {
 
 impl Drop for Iter {
     fn drop(&mut self) {
-        let _ = self.child.kill();
-        let _ = self.child.wait();
+        _ = self.child.kill();
+        _ = self.child.wait();
     }
 }

src/import/atuin.rs

@@ -168,13 +168,9 @@ pub fn write(path: impl AsRef<Path>, contents: impl AsRef<[u8]>) -> Result<()> {
         // Set the owner of the tmpfile (UNIX only).
         #[cfg(unix)]
         if let Ok(metadata) = path.metadata() {
-            use std::os::unix::fs::MetadataExt;
+            use std::os::unix::fs::{MetadataExt, fchown};
 
-            use nix::unistd::{self, Gid, Uid};
-
-            let uid = Uid::from_raw(metadata.uid());
-            let gid = Gid::from_raw(metadata.gid());
-            _ = unistd::fchown(&tmp_file, Some(uid), Some(gid));
+            _ = fchown(&tmp_file, Some(metadata.uid()), Some(metadata.gid()));
         }
 
         // Close and rename the tmpfile.