--- a/rust/hg-core/src/revlog/changelog.rs	Tue Apr 12 21:25:56 2022 -0700
+++ b/rust/hg-core/src/revlog/changelog.rs	Fri Apr 15 09:37:13 2022 -0700
@@ -1,10 +1,9 @@
 use crate::errors::HgError;
-use crate::repo::Repo;
-use crate::requirements;
 use crate::revlog::revlog::{Revlog, RevlogEntry, RevlogError};
 use crate::revlog::Revision;
 use crate::revlog::{Node, NodePrefix};
 use crate::utils::hg_path::HgPath;
+use crate::vfs::Vfs;
 use itertools::Itertools;
 use std::ascii::escape_default;
 use std::fmt::{Debug, Formatter};
@@ -17,16 +16,9 @@
 
 impl Changelog {
     /// Open the `changelog` of a repository given by its root.
-    pub fn open(repo: &Repo) -> Result<Self, HgError> {
-        let use_nodemap = repo
-            .requirements()
-            .contains(requirements::NODEMAP_REQUIREMENT);
-        let revlog = Revlog::open(
-            &repo.store_vfs(),
-            "00changelog.i",
-            None,
-            use_nodemap,
-        )?;
+    pub fn open(store_vfs: &Vfs, use_nodemap: bool) -> Result<Self, HgError> {
+        let revlog =
+            Revlog::open(store_vfs, "00changelog.i", None, use_nodemap)?;
         Ok(Self { revlog })
     }