chore: remove rustc-hash dependency, not much overhead

Cargo.lock

@@ -190,7 +190,6 @@ dependencies = [
  "ref-cast",
  "regex",
  "rusqlite",
- "rustc-hash",
  "size",
  "unicode-width",
  "yansi",
@@ -460,12 +459,6 @@ dependencies = [
  "smallvec",
 ]
 
-[[package]]
-name = "rustc-hash"
-version = "2.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "357703d41365b4b27c590e3ed91eabb1b663f07c4c084095e60cbed4362dff0d"
-
 [[package]]
 name = "serde"
 version = "1.0.219"

Cargo.toml

@@ -16,7 +16,6 @@ log                 = "0.4.20"
 ref-cast            = "1.0.24"
 regex               = "1.11.1"
 rusqlite            = { version = "0.35.0", features = [ "bundled" ] }
-rustc-hash          = "2.1.1"
 size                = "0.5.0"
 unicode-width       = "0.2.0"
 yansi               = { version = "1.0.1", features = [ "detect-env", "detect-tty" ] }

src/diff.rs

@@ -1,6 +1,9 @@
-use std::fmt::{
-  self,
-  Write as _,
+use std::{
+  collections::HashMap,
+  fmt::{
+    self,
+    Write as _,
+  },
 };
 
 use itertools::{
@@ -8,10 +11,6 @@ use itertools::{
   Itertools,
 };
 use ref_cast::RefCast as _;
-use rustc_hash::{
-  FxBuildHasher,
-  FxHashMap,
-};
 use unicode_width::UnicodeWidthStr as _;
 use yansi::Paint as _;
 
@@ -48,8 +47,7 @@ pub fn write_diffln<'a>(
   paths_old: impl Iterator<Item = &'a StorePath>,
   paths_new: impl Iterator<Item = &'a StorePath>,
 ) -> Result<usize, fmt::Error> {
-  let mut paths =
-    FxHashMap::<&str, Diff<Vec<Option<&Version>>>>::with_hasher(FxBuildHasher);
+  let mut paths = HashMap::<&str, Diff<Vec<Option<&Version>>>>::new();
 
   for path in paths_old {
     match path.parse_name_and_version() {

src/store.rs

@@ -1,4 +1,5 @@
 use std::{
+  collections::HashMap,
   path::Path,
   result,
 };
@@ -8,10 +9,6 @@ use anyhow::{
   Result,
 };
 use derive_more::Deref;
-use rustc_hash::{
-  FxBuildHasher,
-  FxHashMap,
-};
 
 use crate::{
   DerivationId,
@@ -120,7 +117,7 @@ impl Connection {
   pub fn query_dependency_graph(
     &mut self,
     path: &StorePath,
-  ) -> Result<FxHashMap<DerivationId, Vec<DerivationId>>> {
+  ) -> Result<HashMap<DerivationId, Vec<DerivationId>>> {
     const QUERY: &str = "
       WITH RECURSIVE
         graph(p, c) AS (
@@ -137,8 +134,7 @@ impl Connection {
 
     path_to_str!(path);
 
-    let mut adj =
-      FxHashMap::<DerivationId, Vec<DerivationId>>::with_hasher(FxBuildHasher);
+    let mut adj = HashMap::<DerivationId, Vec<DerivationId>>::new();
 
     let mut statement = self.prepare_cached(QUERY)?;