Support pathspec v1

[cpburnz]

Hi, I'm the author of pathspec and released v1 yesterday. It was reported to me in #99 that this broke dvc, and you pinned to pathspec<1 in #10948. The changes required to support v1 are minimal:

• pathspec.patterns.GitWildMatchPattern is now a deprecated alias for pathspec.patterns.gitignore.spec.GitIgnoreSpecPattern.
• pathspec.patterns.gitwildmatch._DIR_MARK was moved to pathspec.patterns.gitignore.spec._DIR_MARK.

---

• ❗ I have followed the Contributing to DVC checklist.

• 📖 If this PR requires documentation updates, I have created a separate PR (or issue, at least) in dvc.org and linked it here.

Here's the pytest summary:

============================================= short test summary info ==============================================
SKIPPED [2] tests/func/metrics/test_show.py:260: no longer raising graph errors
SKIPPED [1] tests/func/test_add.py:483: Windows specific
SKIPPED [4] tests/func/utils/test_hydra.py:103: TOML dumper breaks when overriding a list/dict with other type or when handling `null` values.
SKIPPED [1] tests/unit/utils/test_fs.py:74: Windows specific
SKIPPED [1] tests/unit/utils/test_fs.py:133: Windows specific
SKIPPED [1] tests/unit/utils/test_utils.py:43: Windows specific
XPASS tests/func/test_data_cloud.py::TestRemote::test_pull_00_prefix
XPASS tests/func/test_data_cloud.py::TestRemote::test_pull_no_00_prefix
====================== 3047 passed, 10 skipped, 2 xpassed, 899 warnings in 248.52s (0:04:08) =======================

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

❌ Patch coverage is 55.55556% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.98%. Comparing base (2431ec6) to head (af8e58c).
⚠️ Report is 191 commits behind head on main.

Files with missing lines	Patch %	Lines
dvc/ignore.py	55.55%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #10951      +/-   ##
==========================================
+ Coverage   90.68%   90.98%   +0.29%     
==========================================
  Files         504      505       +1     
  Lines       39795    41103    +1308     
  Branches     3141     3258     +117     
==========================================
+ Hits        36087    37396    +1309     
- Misses       3042     3069      +27     
+ Partials      666      638      -28     

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[skshetry]

@cpburnz, are there any behavior change in how the patterns are interpreted in v1?
By "substantial change" in #10948, I was worried more about behavioral differences than API changes. We likely don’t have enough tests in DVC to validate that.

[cpburnz]

There's a bug fix to not strip leading whitespace to match Git. This a minor edge case. There is one potential major change to GitIgnoreSpecPattern (formerly GitWildMatchPattern) depending on how you use the resulting regular expressions. Some patterns will be optimized to match only part of the path string instead of the whole string. This largely affects "**" and "*". E.g., "**" will result in just "." instead of "^[^/]+(?:/.*)?$", and "**/" results in just f"(?P<{_DIR_MARK}>/)" instead of f"^.+(?P<{_DIR_MARK}>/).*$" [corrected].

…

-------- Original Message --------

On Tuesday, 01/06/26 at 09:22 skshetry ***@***.***> wrote: skshetry left a comment [(treeverse/dvc#10951)](#10951 (comment)) ***@***.***(https://github.com/cpburnz), are there any behavior change in how the patterns are interpreted in v1? By "substantial change" in [#10948](#10948), I was worried more about behavioral differences than API changes. We likely don’t have enough tests in DVC to validate that. — Reply to this email directly, [view it on GitHub](#10951 (comment)), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/AAQHBW2NDQ7BLPJMYOHCF7D4FPAKTAVCNFSM6AAAAACQ2X367WVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTOMJUHA4TANRUGA). You are receiving this because you were mentioned.Message ID: ***@***.***>

[cpburnz]

Additionally, the ending of regular paths changed:

• dir results in ^(?:.+/)?dir(?:(?P<{_DIR_MARK}>/)|$) instead of ^(?:.+/)?dir(?:(?P<{_DIR_MARK}>/).*)?$.
• dir/ results in ^(?:.+/)?dir(?P<{_DIR_MARK}>/) instead of (?:.+/)?dir(?P<{_DIR_MARK}>/).*$.