[shubhamsargar31]

Title

Fix SQLite DQS=0 compatibility

Problem Description

SQLite supports double-quoted string literals in some configurations. However, when the DQS (Double-Quoted String) compatibility feature is disabled, SQL queries that use double quotes for string values may fail.

The diskcache dependency is used by dvc-data for caching operations. Its SQL statements may use double-quoted string literals, which can cause compatibility problems with SQLite builds configured with DQS disabled.

Proposed Solution

This pull request replaces the diskcache dependency with diskcache-community.

The corresponding imports in src/dvc_data/hashfile/cache.py have also been updated to use the diskcache_community package.

The purpose of this change is to improve compatibility with SQLite configurations where double-quoted string literals are disabled, while retaining the cache functionality used by dvc-data.

Changes Made

• Replaced diskcache>=5.2.1 with diskcache-community>=5.7.0 in pyproject.toml.
• Updated the cache-related imports in src/dvc_data/hashfile/cache.py.
• Kept the existing cache module structure and functionality.

Testing Performed

• Ran python -m pytest tests/hashfile/test_cache.py — 8 tests passed.
• Ran git diff --check — passed with no whitespace errors.
• Performed a basic cache operation test with diskcache-community.

Expected Outcome

The proposed change aims to improve SQLite compatibility when DQS is disabled and allow the cache module to continue performing its expected operations.

Limitation

The change has not yet been tested against an SQLite build with DQS explicitly disabled. Therefore, compatibility in that exact configuration still requires further verification.

Request for Review

Please review the dependency replacement and import changes and provide feedback on whether this approach is suitable for resolving the SQLite DQS compatibility issue.

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