diff --git a/src/repo.rs b/src/repo.rs
index ed87b7a..b659e3d 100644
--- a/src/repo.rs
+++ b/src/repo.rs
@@ -103,6 +103,7 @@ pub(crate) trait FullRepo:
     + AliasRepo
     + QueueRepo
     + HashRepo
+    + VariantRepo
     + StoreMigrationRepo
     + AliasAccessRepo
     + VariantAccessRepo
@@ -653,20 +654,6 @@ pub(crate) trait HashRepo: BaseRepo {
 
     async fn identifier(&self, hash: Hash) -> Result<Option<Arc<str>>, RepoError>;
 
-    async fn relate_variant_identifier(
-        &self,
-        hash: Hash,
-        variant: String,
-        identifier: &Arc<str>,
-    ) -> Result<Result<(), VariantAlreadyExists>, RepoError>;
-    async fn variant_identifier(
-        &self,
-        hash: Hash,
-        variant: String,
-    ) -> Result<Option<Arc<str>>, RepoError>;
-    async fn variants(&self, hash: Hash) -> Result<Vec<(String, Arc<str>)>, RepoError>;
-    async fn remove_variant(&self, hash: Hash, variant: String) -> Result<(), RepoError>;
-
     async fn relate_blurhash(&self, hash: Hash, blurhash: Arc<str>) -> Result<(), RepoError>;
     async fn blurhash(&self, hash: Hash) -> Result<Option<Arc<str>>, RepoError>;
 
@@ -726,6 +713,56 @@ where
         T::identifier(self, hash).await
     }
 
+    async fn relate_blurhash(&self, hash: Hash, blurhash: Arc<str>) -> Result<(), RepoError> {
+        T::relate_blurhash(self, hash, blurhash).await
+    }
+
+    async fn blurhash(&self, hash: Hash) -> Result<Option<Arc<str>>, RepoError> {
+        T::blurhash(self, hash).await
+    }
+
+    async fn relate_motion_identifier(
+        &self,
+        hash: Hash,
+        identifier: &Arc<str>,
+    ) -> Result<(), RepoError> {
+        T::relate_motion_identifier(self, hash, identifier).await
+    }
+
+    async fn motion_identifier(&self, hash: Hash) -> Result<Option<Arc<str>>, RepoError> {
+        T::motion_identifier(self, hash).await
+    }
+
+    async fn cleanup_hash(&self, hash: Hash) -> Result<(), RepoError> {
+        T::cleanup_hash(self, hash).await
+    }
+}
+
+#[async_trait::async_trait(?Send)]
+pub(crate) trait VariantRepo: BaseRepo {
+    async fn relate_variant_identifier(
+        &self,
+        hash: Hash,
+        variant: String,
+        identifier: &Arc<str>,
+    ) -> Result<Result<(), VariantAlreadyExists>, RepoError>;
+
+    async fn variant_identifier(
+        &self,
+        hash: Hash,
+        variant: String,
+    ) -> Result<Option<Arc<str>>, RepoError>;
+
+    async fn variants(&self, hash: Hash) -> Result<Vec<(String, Arc<str>)>, RepoError>;
+
+    async fn remove_variant(&self, hash: Hash, variant: String) -> Result<(), RepoError>;
+}
+
+#[async_trait::async_trait(?Send)]
+impl<T> VariantRepo for Arc<T>
+where
+    T: VariantRepo,
+{
     async fn relate_variant_identifier(
         &self,
         hash: Hash,
@@ -750,30 +787,6 @@ where
     async fn remove_variant(&self, hash: Hash, variant: String) -> Result<(), RepoError> {
         T::remove_variant(self, hash, variant).await
     }
-
-    async fn relate_blurhash(&self, hash: Hash, blurhash: Arc<str>) -> Result<(), RepoError> {
-        T::relate_blurhash(self, hash, blurhash).await
-    }
-
-    async fn blurhash(&self, hash: Hash) -> Result<Option<Arc<str>>, RepoError> {
-        T::blurhash(self, hash).await
-    }
-
-    async fn relate_motion_identifier(
-        &self,
-        hash: Hash,
-        identifier: &Arc<str>,
-    ) -> Result<(), RepoError> {
-        T::relate_motion_identifier(self, hash, identifier).await
-    }
-
-    async fn motion_identifier(&self, hash: Hash) -> Result<Option<Arc<str>>, RepoError> {
-        T::motion_identifier(self, hash).await
-    }
-
-    async fn cleanup_hash(&self, hash: Hash) -> Result<(), RepoError> {
-        T::cleanup_hash(self, hash).await
-    }
 }
 
 #[async_trait::async_trait(?Send)]
diff --git a/src/repo/postgres.rs b/src/repo/postgres.rs
index faa5792..a14c5b2 100644
--- a/src/repo/postgres.rs
+++ b/src/repo/postgres.rs
@@ -46,7 +46,7 @@ use super::{
     Alias, AliasAccessRepo, AliasAlreadyExists, AliasRepo, BaseRepo, DeleteToken, DetailsRepo,
     FullRepo, Hash, HashAlreadyExists, HashPage, HashRepo, JobId, JobResult, OrderedHash,
     ProxyRepo, QueueRepo, RepoError, SettingsRepo, StoreMigrationRepo, UploadId, UploadRepo,
-    UploadResult, VariantAccessRepo, VariantAlreadyExists,
+    UploadResult, VariantAccessRepo, VariantAlreadyExists, VariantRepo,
 };
 
 #[derive(Clone)]
@@ -863,110 +863,6 @@ impl HashRepo for PostgresRepo {
         Ok(opt.map(Arc::from))
     }
 
-    #[tracing::instrument(level = "debug", skip(self))]
-    async fn relate_variant_identifier(
-        &self,
-        input_hash: Hash,
-        input_variant: String,
-        input_identifier: &Arc<str>,
-    ) -> Result<Result<(), VariantAlreadyExists>, RepoError> {
-        use schema::variants::dsl::*;
-
-        let mut conn = self.get_connection().await?;
-
-        let res = diesel::insert_into(variants)
-            .values((
-                hash.eq(&input_hash),
-                variant.eq(&input_variant),
-                identifier.eq(input_identifier.as_ref()),
-            ))
-            .execute(&mut conn)
-            .with_metrics(crate::init_metrics::POSTGRES_VARIANTS_RELATE_VARIANT_IDENTIFIER)
-            .with_timeout(Duration::from_secs(5))
-            .await
-            .map_err(|_| PostgresError::DbTimeout)?;
-
-        match res {
-            Ok(_) => Ok(Ok(())),
-            Err(diesel::result::Error::DatabaseError(
-                diesel::result::DatabaseErrorKind::UniqueViolation,
-                _,
-            )) => Ok(Err(VariantAlreadyExists)),
-            Err(e) => Err(PostgresError::Diesel(e).into()),
-        }
-    }
-
-    #[tracing::instrument(level = "debug", skip(self))]
-    async fn variant_identifier(
-        &self,
-        input_hash: Hash,
-        input_variant: String,
-    ) -> Result<Option<Arc<str>>, RepoError> {
-        use schema::variants::dsl::*;
-
-        let mut conn = self.get_connection().await?;
-
-        let opt = variants
-            .select(identifier)
-            .filter(hash.eq(&input_hash))
-            .filter(variant.eq(&input_variant))
-            .get_result::<String>(&mut conn)
-            .with_metrics(crate::init_metrics::POSTGRES_VARIANTS_IDENTIFIER)
-            .with_timeout(Duration::from_secs(5))
-            .await
-            .map_err(|_| PostgresError::DbTimeout)?
-            .optional()
-            .map_err(PostgresError::Diesel)?
-            .map(Arc::from);
-
-        Ok(opt)
-    }
-
-    #[tracing::instrument(level = "debug", skip(self))]
-    async fn variants(&self, input_hash: Hash) -> Result<Vec<(String, Arc<str>)>, RepoError> {
-        use schema::variants::dsl::*;
-
-        let mut conn = self.get_connection().await?;
-
-        let vec = variants
-            .select((variant, identifier))
-            .filter(hash.eq(&input_hash))
-            .get_results::<(String, String)>(&mut conn)
-            .with_metrics(crate::init_metrics::POSTGRES_VARIANTS_FOR_HASH)
-            .with_timeout(Duration::from_secs(5))
-            .await
-            .map_err(|_| PostgresError::DbTimeout)?
-            .map_err(PostgresError::Diesel)?
-            .into_iter()
-            .map(|(s, i)| (s, Arc::from(i)))
-            .collect();
-
-        Ok(vec)
-    }
-
-    #[tracing::instrument(level = "debug", skip(self))]
-    async fn remove_variant(
-        &self,
-        input_hash: Hash,
-        input_variant: String,
-    ) -> Result<(), RepoError> {
-        use schema::variants::dsl::*;
-
-        let mut conn = self.get_connection().await?;
-
-        diesel::delete(variants)
-            .filter(hash.eq(&input_hash))
-            .filter(variant.eq(&input_variant))
-            .execute(&mut conn)
-            .with_metrics(crate::init_metrics::POSTGRES_VARIANTS_REMOVE)
-            .with_timeout(Duration::from_secs(5))
-            .await
-            .map_err(|_| PostgresError::DbTimeout)?
-            .map_err(PostgresError::Diesel)?;
-
-        Ok(())
-    }
-
     #[tracing::instrument(level = "debug", skip(self))]
     async fn relate_blurhash(
         &self,
@@ -1083,6 +979,113 @@ impl HashRepo for PostgresRepo {
     }
 }
 
+#[async_trait::async_trait(?Send)]
+impl VariantRepo for PostgresRepo {
+    #[tracing::instrument(level = "debug", skip(self))]
+    async fn relate_variant_identifier(
+        &self,
+        input_hash: Hash,
+        input_variant: String,
+        input_identifier: &Arc<str>,
+    ) -> Result<Result<(), VariantAlreadyExists>, RepoError> {
+        use schema::variants::dsl::*;
+
+        let mut conn = self.get_connection().await?;
+
+        let res = diesel::insert_into(variants)
+            .values((
+                hash.eq(&input_hash),
+                variant.eq(&input_variant),
+                identifier.eq(input_identifier.as_ref()),
+            ))
+            .execute(&mut conn)
+            .with_metrics(crate::init_metrics::POSTGRES_VARIANTS_RELATE_VARIANT_IDENTIFIER)
+            .with_timeout(Duration::from_secs(5))
+            .await
+            .map_err(|_| PostgresError::DbTimeout)?;
+
+        match res {
+            Ok(_) => Ok(Ok(())),
+            Err(diesel::result::Error::DatabaseError(
+                diesel::result::DatabaseErrorKind::UniqueViolation,
+                _,
+            )) => Ok(Err(VariantAlreadyExists)),
+            Err(e) => Err(PostgresError::Diesel(e).into()),
+        }
+    }
+
+    #[tracing::instrument(level = "debug", skip(self))]
+    async fn variant_identifier(
+        &self,
+        input_hash: Hash,
+        input_variant: String,
+    ) -> Result<Option<Arc<str>>, RepoError> {
+        use schema::variants::dsl::*;
+
+        let mut conn = self.get_connection().await?;
+
+        let opt = variants
+            .select(identifier)
+            .filter(hash.eq(&input_hash))
+            .filter(variant.eq(&input_variant))
+            .get_result::<String>(&mut conn)
+            .with_metrics(crate::init_metrics::POSTGRES_VARIANTS_IDENTIFIER)
+            .with_timeout(Duration::from_secs(5))
+            .await
+            .map_err(|_| PostgresError::DbTimeout)?
+            .optional()
+            .map_err(PostgresError::Diesel)?
+            .map(Arc::from);
+
+        Ok(opt)
+    }
+
+    #[tracing::instrument(level = "debug", skip(self))]
+    async fn variants(&self, input_hash: Hash) -> Result<Vec<(String, Arc<str>)>, RepoError> {
+        use schema::variants::dsl::*;
+
+        let mut conn = self.get_connection().await?;
+
+        let vec = variants
+            .select((variant, identifier))
+            .filter(hash.eq(&input_hash))
+            .get_results::<(String, String)>(&mut conn)
+            .with_metrics(crate::init_metrics::POSTGRES_VARIANTS_FOR_HASH)
+            .with_timeout(Duration::from_secs(5))
+            .await
+            .map_err(|_| PostgresError::DbTimeout)?
+            .map_err(PostgresError::Diesel)?
+            .into_iter()
+            .map(|(s, i)| (s, Arc::from(i)))
+            .collect();
+
+        Ok(vec)
+    }
+
+    #[tracing::instrument(level = "debug", skip(self))]
+    async fn remove_variant(
+        &self,
+        input_hash: Hash,
+        input_variant: String,
+    ) -> Result<(), RepoError> {
+        use schema::variants::dsl::*;
+
+        let mut conn = self.get_connection().await?;
+
+        diesel::delete(variants)
+            .filter(hash.eq(&input_hash))
+            .filter(variant.eq(&input_variant))
+            .execute(&mut conn)
+            .with_metrics(crate::init_metrics::POSTGRES_VARIANTS_REMOVE)
+            .with_timeout(Duration::from_secs(5))
+            .await
+            .map_err(|_| PostgresError::DbTimeout)?
+            .map_err(PostgresError::Diesel)?;
+
+        Ok(())
+    }
+}
+
 #[async_trait::async_trait(?Send)]
 impl AliasRepo for PostgresRepo {
     #[tracing::instrument(level = "debug", skip(self))]
diff --git a/src/repo/sled.rs b/src/repo/sled.rs
index 6042116..2555438 100644
--- a/src/repo/sled.rs
+++ b/src/repo/sled.rs
@@ -25,7 +25,7 @@ use super::{
     Alias, AliasAccessRepo, AliasAlreadyExists, AliasRepo, BaseRepo, DeleteToken, Details,
     DetailsRepo, FullRepo, HashAlreadyExists, HashPage, HashRepo, JobId, JobResult, OrderedHash,
     ProxyRepo, QueueRepo, RepoError, SettingsRepo, StoreMigrationRepo, UploadId, UploadRepo,
-    UploadResult, VariantAccessRepo, VariantAlreadyExists,
+    UploadResult, VariantAccessRepo, VariantAlreadyExists, VariantRepo,
 };
 
 macro_rules! b {
@@ -1331,88 +1331,6 @@ impl HashRepo for SledRepo {
         Ok(opt.map(try_into_arc_str).transpose()?)
     }
 
-    #[tracing::instrument(level = "trace", skip(self))]
-    async fn relate_variant_identifier(
-        &self,
-        hash: Hash,
-        variant: String,
-        identifier: &Arc<str>,
-    ) -> Result<Result<(), VariantAlreadyExists>, RepoError> {
-        let hash = hash.to_bytes();
-
-        let key = variant_key(&hash, &variant);
-        let value = identifier.clone();
-
-        let hash_variant_identifiers = self.hash_variant_identifiers.clone();
-
-        crate::sync::spawn_blocking("sled-io", move || {
-            hash_variant_identifiers
-                .compare_and_swap(key, Option::<&[u8]>::None, Some(value.as_bytes()))
-                .map(|res| res.map_err(|_| VariantAlreadyExists))
-        })
-        .await
-        .map_err(|_| RepoError::Canceled)?
-        .map_err(SledError::from)
-        .map_err(RepoError::from)
-    }
-
-    #[tracing::instrument(level = "trace", skip(self))]
-    async fn variant_identifier(
-        &self,
-        hash: Hash,
-        variant: String,
-    ) -> Result<Option<Arc<str>>, RepoError> {
-        let hash = hash.to_bytes();
-
-        let key = variant_key(&hash, &variant);
-
-        let opt = b!(
-            self.hash_variant_identifiers,
-            hash_variant_identifiers.get(key)
-        );
-
-        Ok(opt.map(try_into_arc_str).transpose()?)
-    }
-
-    #[tracing::instrument(level = "debug", skip(self))]
-    async fn variants(&self, hash: Hash) -> Result<Vec<(String, Arc<str>)>, RepoError> {
-        let hash = hash.to_ivec();
-
-        let vec = b!(
-            self.hash_variant_identifiers,
-            Ok(hash_variant_identifiers
-                .scan_prefix(hash.clone())
-                .filter_map(|res| res.ok())
-                .filter_map(|(key, ivec)| {
-                    let identifier = try_into_arc_str(ivec).ok();
-
-                    let variant = variant_from_key(&hash, &key);
-                    if variant.is_none() {
-                        tracing::warn!("Skipping a variant: {}", String::from_utf8_lossy(&key));
-                    }
-
-                    Some((variant?, identifier?))
-                })
-                .collect::<Vec<_>>()) as Result<Vec<_>, SledError>
-        );
-
-        Ok(vec)
-    }
-
-    #[tracing::instrument(level = "trace", skip(self))]
-    async fn remove_variant(&self, hash: Hash, variant: String) -> Result<(), RepoError> {
-        let hash = hash.to_bytes();
-
-        let key = variant_key(&hash, &variant);
-
-        b!(
-            self.hash_variant_identifiers,
-            hash_variant_identifiers.remove(key)
-        );
-
-        Ok(())
-    }
-
     #[tracing::instrument(level = "trace", skip(self))]
     async fn relate_blurhash(&self, hash: Hash, blurhash: Arc<str>) -> Result<(), RepoError> {
         b!(
@@ -1528,6 +1446,91 @@ impl HashRepo for SledRepo {
     }
 }
 
+#[async_trait::async_trait(?Send)]
+impl VariantRepo for SledRepo {
+    #[tracing::instrument(level = "trace", skip(self))]
+    async fn relate_variant_identifier(
+        &self,
+        hash: Hash,
+        variant: String,
+        identifier: &Arc<str>,
+    ) -> Result<Result<(), VariantAlreadyExists>, RepoError> {
+        let hash = hash.to_bytes();
+
+        let key = variant_key(&hash, &variant);
+        let value = identifier.clone();
+
+        let hash_variant_identifiers = self.hash_variant_identifiers.clone();
+
+        crate::sync::spawn_blocking("sled-io", move || {
+            hash_variant_identifiers
+                .compare_and_swap(key, Option::<&[u8]>::None, Some(value.as_bytes()))
+                .map(|res| res.map_err(|_| VariantAlreadyExists))
+        })
+        .await
+        .map_err(|_| RepoError::Canceled)?
+        .map_err(SledError::from)
+        .map_err(RepoError::from)
+    }
+
+    #[tracing::instrument(level = "trace", skip(self))]
+    async fn variant_identifier(
+        &self,
+        hash: Hash,
+        variant: String,
+    ) -> Result<Option<Arc<str>>, RepoError> {
+        let hash = hash.to_bytes();
+
+        let key = variant_key(&hash, &variant);
+
+        let opt = b!(
+            self.hash_variant_identifiers,
+            hash_variant_identifiers.get(key)
+        );
+
+        Ok(opt.map(try_into_arc_str).transpose()?)
+    }
+
+    #[tracing::instrument(level = "debug", skip(self))]
+    async fn variants(&self, hash: Hash) -> Result<Vec<(String, Arc<str>)>, RepoError> {
+        let hash = hash.to_ivec();
+
+        let vec = b!(
+            self.hash_variant_identifiers,
+            Ok(hash_variant_identifiers
+                .scan_prefix(hash.clone())
+                .filter_map(|res| res.ok())
+                .filter_map(|(key, ivec)| {
+                    let identifier = try_into_arc_str(ivec).ok();
+
+                    let variant = variant_from_key(&hash, &key);
+                    if variant.is_none() {
+                        tracing::warn!("Skipping a variant: {}", String::from_utf8_lossy(&key));
+                    }
+
+                    Some((variant?, identifier?))
+                })
+                .collect::<Vec<_>>()) as Result<Vec<_>, SledError>
+        );
+
+        Ok(vec)
+    }
+
+    #[tracing::instrument(level = "trace", skip(self))]
+    async fn remove_variant(&self, hash: Hash, variant: String) -> Result<(), RepoError> {
+        let hash = hash.to_bytes();
+
+        let key = variant_key(&hash, &variant);
+
+        b!(
+            self.hash_variant_identifiers,
+            hash_variant_identifiers.remove(key)
+        );
+
+        Ok(())
+    }
+}
+
 fn hash_alias_key(hash: &IVec, alias: &IVec) -> Vec<u8> {
     let mut v = hash.to_vec();
     v.extend_from_slice(alias);