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Include TagObject in git.types.Tree_ish #1878
Include TagObject in git.types.Tree_ish #1878
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The Tree_ish union omitted TagObject, whose instances are only sometimes tree-ish, and unlike Commit_ish before gitpython-developers#1859, it is not inherently a bug to define Tree_ish this way. However, this Tree_ish type actually has only one use in GitPython (which was also the case before the changes in gitpython-developers#1859): as, itself, an alternative in the union used to annotate the rev parameter of the Repo.tree method (whose other alternatives are str and None). A TagObject may be passed, and if it points to a tree or commit then that will be resolved. Just to avoid a mypy error, code doing that would (before this change) have to convert it to str first. That annotation should be improved, and the best way to do it is to keep it written the same way but change the definition of Tree_ish in git.types to include TagObject. The reason is that doing so alleviates a major unintuitive aspect of the relationship between the Commit_ish and Tree_ish types: Commit_ish was broader than everything commit-ish, while Tree_ish was narrower than everything tree-ish. I had not considered making this change in gitpython-developers#1859 because I didn't want to modify Tree_ish unnecessarily, and its definition was not inherently a bug. However, the change to Commit_ish is sufficiently large (though it only affects static typing) that a change to Tree_ish to make them coherent and intuitive may be justified. This commit changes Tree_ish so that, in addition to its Commit and Tree alternatives, it also includes TagObject. This also updates and simplifies its docstring accordingly, bringing it in line with that of Commit_ish which is already defined with the same kind of breadth, and further revises both docstrings to more explicitly clarify when tags are tree-ish or commit-ish and when they are not. This does not change the separate nonpublic Treeish type defined in git.index.base (and named with no underscore), which omits TagObject but includes bytes and str, and which is used to annotate parameters of the IndexFile.from_tree and IndexFile.merge_tree methods. Changes there may be valuable, but the goal here is just to build narrowly on gitpython-developers#1859 to address a shortcoming of the revisions to git.types.
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Thanks a lot!
I am glad this change could be made as it means that GitPython can properly peel input objects.
As a nit, I felt that saying TagObject
only sometimes resolves to a tree doesn't do justice to their typical use, which is to point to a commit. However, I am also sure you had a good reason to describe it like this.
That sounds like something that should be further improved. But where is it? |
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I left comments where I thought the nit comes from, apologies for being unspecific previously.
Do you just mean that this change should be made to Whether a particular :class:`~git.objects.tag.TagObject` peels (recursively
-dereferences) to a tree or commit, rather than a blob, can in general only be known
-dereferences) to a commit or tree, rather than a blob, can in general only be known
at runtime. If so, then the following elaborated request for clarification can be disregarded. If not--and it sounds to me like you may intend to suggest a deeper change--then I think I am still missing something. The relevant pieces are: Lines 86 to 89 in 0a609b9
Lines 105 to 108 in 0a609b9
These are saying only some tag objects are tree-ish and only some tag objects are commit-ish, respectively. This seems different to me from saying that tag objects only sometimes resolve to a tree; when tag objects are tree-ish, it is usually because they resolve to a commit, which is tree-ish. I can think of three changes that might help.
However, it seems to me that perhaps none of these is likely what you're looking for either, because it sounds like you may have identified an unaddressed asymmetry, while these changes apply equally to both. |
Sorry for not making it clearer before. My 'nit' was about TagObjects being referred to as 'sometimes' pointing to a commit, even though they do that most of the time. To my mind it's already great to show they are resolved at runtime to indicate they could also point to another object type. |
Thanks for clarifying, that makes sense now. I'll try to open a pull request to make that aspect, about what is most common, more clear, sometime later today. |
This revises the docstrings of the Tree_ish and Commit_ish unions, to make clearer that tags objects are usually used to identify commits and are thus usually tree-ish and commit-ish. This change relates to the discussion in gitpython-developers#1878, starting at: gitpython-developers#1878 (review)
I've opened #1881 for this. |
This revises the docstrings of the Tree_ish and Commit_ish unions, to make clearer that tags objects are usually used to identify commits and are thus usually tree-ish and commit-ish. This change relates to the discussion in gitpython-developers#1878, starting at: gitpython-developers#1878 (review)
[![Mend Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [GitPython](https://togithub.com/gitpython-developers/GitPython) | `==3.1.42` -> `==3.1.43` | [![age](https://developer.mend.io/api/mc/badges/age/pypi/GitPython/3.1.43?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/GitPython/3.1.43?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/GitPython/3.1.42/3.1.43?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/GitPython/3.1.42/3.1.43?slim=true)](https://docs.renovatebot.com/merge-confidence/) | --- ### Release Notes <details> <summary>gitpython-developers/GitPython (GitPython)</summary> ### [`v3.1.43`](https://togithub.com/gitpython-developers/GitPython/releases/tag/3.1.43) [Compare Source](https://togithub.com/gitpython-developers/GitPython/compare/3.1.42...3.1.43) #### Particularly Important Changes These are likely to affect you, please do take a careful look. - Issue and test deprecation warnings by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1886](https://togithub.com/gitpython-developers/GitPython/pull/1886) - Fix version_info cache invalidation, typing, parsing, and serialization by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1838](https://togithub.com/gitpython-developers/GitPython/pull/1838) - Document manual refresh path treatment by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1839](https://togithub.com/gitpython-developers/GitPython/pull/1839) - Improve static typing and docstrings related to git object types by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1859](https://togithub.com/gitpython-developers/GitPython/pull/1859) #### Other Changes - Test in Docker with Alpine Linux on CI by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1826](https://togithub.com/gitpython-developers/GitPython/pull/1826) - Build online docs (RTD) with -W and dependencies by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1843](https://togithub.com/gitpython-developers/GitPython/pull/1843) - Suggest full-path refresh() in failure message by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1844](https://togithub.com/gitpython-developers/GitPython/pull/1844) - `repo.blame` and `repo.blame_incremental` now accept `None` as the `rev` parameter. by [@​Gaubbe](https://togithub.com/Gaubbe) in [https://github.com/gitpython-developers/GitPython/pull/1846](https://togithub.com/gitpython-developers/GitPython/pull/1846) - Make sure diff always uses the default diff driver when `create_patch=True` by [@​can-taslicukur](https://togithub.com/can-taslicukur) in [https://github.com/gitpython-developers/GitPython/pull/1832](https://togithub.com/gitpython-developers/GitPython/pull/1832) - Revise docstrings, comments, and a few messages by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1850](https://togithub.com/gitpython-developers/GitPython/pull/1850) - Expand what is included in the API Reference by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1855](https://togithub.com/gitpython-developers/GitPython/pull/1855) - Restore building of documentation downloads by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1856](https://togithub.com/gitpython-developers/GitPython/pull/1856) - Revise type annotations slightly by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1860](https://togithub.com/gitpython-developers/GitPython/pull/1860) - Updating regex pattern to handle unicode whitespaces. by [@​jcole-crowdstrike](https://togithub.com/jcole-crowdstrike) in [https://github.com/gitpython-developers/GitPython/pull/1853](https://togithub.com/gitpython-developers/GitPython/pull/1853) - Use upgraded pip in test fixture virtual environment by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1864](https://togithub.com/gitpython-developers/GitPython/pull/1864) - lint: replace `flake8` with `ruff` check by [@​Borda](https://togithub.com/Borda) in [https://github.com/gitpython-developers/GitPython/pull/1862](https://togithub.com/gitpython-developers/GitPython/pull/1862) - lint: switch Black with `ruff-format` by [@​Borda](https://togithub.com/Borda) in [https://github.com/gitpython-developers/GitPython/pull/1865](https://togithub.com/gitpython-developers/GitPython/pull/1865) - Update readme and tox.ini for recent tooling changes by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1868](https://togithub.com/gitpython-developers/GitPython/pull/1868) - Split tox lint env into three envs, all safe by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1870](https://togithub.com/gitpython-developers/GitPython/pull/1870) - Slightly broaden Ruff, and update and clarify tool configuration by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1871](https://togithub.com/gitpython-developers/GitPython/pull/1871) - Add a "doc" extra for documentation build dependencies by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1872](https://togithub.com/gitpython-developers/GitPython/pull/1872) - Describe `Submodule.__init__` parent_commit parameter by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1877](https://togithub.com/gitpython-developers/GitPython/pull/1877) - Include TagObject in git.types.Tree_ish by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1878](https://togithub.com/gitpython-developers/GitPython/pull/1878) - Improve Sphinx role usage, including linking Git manpages by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1879](https://togithub.com/gitpython-developers/GitPython/pull/1879) - Replace all wildcard imports with explicit imports by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1880](https://togithub.com/gitpython-developers/GitPython/pull/1880) - Clarify how tag objects are usually tree-ish and commit-ish by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1881](https://togithub.com/gitpython-developers/GitPython/pull/1881) #### New Contributors - [@​Gaubbe](https://togithub.com/Gaubbe) made their first contribution in [https://github.com/gitpython-developers/GitPython/pull/1846](https://togithub.com/gitpython-developers/GitPython/pull/1846) - [@​can-taslicukur](https://togithub.com/can-taslicukur) made their first contribution in [https://github.com/gitpython-developers/GitPython/pull/1832](https://togithub.com/gitpython-developers/GitPython/pull/1832) - [@​jcole-crowdstrike](https://togithub.com/jcole-crowdstrike) made their first contribution in [https://github.com/gitpython-developers/GitPython/pull/1853](https://togithub.com/gitpython-developers/GitPython/pull/1853) - [@​Borda](https://togithub.com/Borda) made their first contribution in [https://github.com/gitpython-developers/GitPython/pull/1862](https://togithub.com/gitpython-developers/GitPython/pull/1862) **Full Changelog**: gitpython-developers/GitPython@3.1.42...3.1.43 </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). 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[![Mend Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com) This PR contains the following updates: | Package | Change | Age | Adoption | Passing | Confidence | |---|---|---|---|---|---| | [GitPython](https://togithub.com/gitpython-developers/GitPython) | `==3.1.42` -> `==3.1.43` | [![age](https://developer.mend.io/api/mc/badges/age/pypi/GitPython/3.1.43?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/GitPython/3.1.43?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/GitPython/3.1.42/3.1.43?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/GitPython/3.1.42/3.1.43?slim=true)](https://docs.renovatebot.com/merge-confidence/) | --- ### Release Notes <details> <summary>gitpython-developers/GitPython (GitPython)</summary> ### [`v3.1.43`](https://togithub.com/gitpython-developers/GitPython/releases/tag/3.1.43) [Compare Source](https://togithub.com/gitpython-developers/GitPython/compare/3.1.42...3.1.43) #### Particularly Important Changes These are likely to affect you, please do take a careful look. - Issue and test deprecation warnings by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1886](https://togithub.com/gitpython-developers/GitPython/pull/1886) - Fix version_info cache invalidation, typing, parsing, and serialization by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1838](https://togithub.com/gitpython-developers/GitPython/pull/1838) - Document manual refresh path treatment by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1839](https://togithub.com/gitpython-developers/GitPython/pull/1839) - Improve static typing and docstrings related to git object types by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1859](https://togithub.com/gitpython-developers/GitPython/pull/1859) #### Other Changes - Test in Docker with Alpine Linux on CI by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1826](https://togithub.com/gitpython-developers/GitPython/pull/1826) - Build online docs (RTD) with -W and dependencies by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1843](https://togithub.com/gitpython-developers/GitPython/pull/1843) - Suggest full-path refresh() in failure message by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1844](https://togithub.com/gitpython-developers/GitPython/pull/1844) - `repo.blame` and `repo.blame_incremental` now accept `None` as the `rev` parameter. by [@​Gaubbe](https://togithub.com/Gaubbe) in [https://github.com/gitpython-developers/GitPython/pull/1846](https://togithub.com/gitpython-developers/GitPython/pull/1846) - Make sure diff always uses the default diff driver when `create_patch=True` by [@​can-taslicukur](https://togithub.com/can-taslicukur) in [https://github.com/gitpython-developers/GitPython/pull/1832](https://togithub.com/gitpython-developers/GitPython/pull/1832) - Revise docstrings, comments, and a few messages by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1850](https://togithub.com/gitpython-developers/GitPython/pull/1850) - Expand what is included in the API Reference by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1855](https://togithub.com/gitpython-developers/GitPython/pull/1855) - Restore building of documentation downloads by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1856](https://togithub.com/gitpython-developers/GitPython/pull/1856) - Revise type annotations slightly by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1860](https://togithub.com/gitpython-developers/GitPython/pull/1860) - Updating regex pattern to handle unicode whitespaces. by [@​jcole-crowdstrike](https://togithub.com/jcole-crowdstrike) in [https://github.com/gitpython-developers/GitPython/pull/1853](https://togithub.com/gitpython-developers/GitPython/pull/1853) - Use upgraded pip in test fixture virtual environment by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1864](https://togithub.com/gitpython-developers/GitPython/pull/1864) - lint: replace `flake8` with `ruff` check by [@​Borda](https://togithub.com/Borda) in [https://github.com/gitpython-developers/GitPython/pull/1862](https://togithub.com/gitpython-developers/GitPython/pull/1862) - lint: switch Black with `ruff-format` by [@​Borda](https://togithub.com/Borda) in [https://github.com/gitpython-developers/GitPython/pull/1865](https://togithub.com/gitpython-developers/GitPython/pull/1865) - Update readme and tox.ini for recent tooling changes by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1868](https://togithub.com/gitpython-developers/GitPython/pull/1868) - Split tox lint env into three envs, all safe by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1870](https://togithub.com/gitpython-developers/GitPython/pull/1870) - Slightly broaden Ruff, and update and clarify tool configuration by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1871](https://togithub.com/gitpython-developers/GitPython/pull/1871) - Add a "doc" extra for documentation build dependencies by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1872](https://togithub.com/gitpython-developers/GitPython/pull/1872) - Describe `Submodule.__init__` parent_commit parameter by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1877](https://togithub.com/gitpython-developers/GitPython/pull/1877) - Include TagObject in git.types.Tree_ish by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1878](https://togithub.com/gitpython-developers/GitPython/pull/1878) - Improve Sphinx role usage, including linking Git manpages by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1879](https://togithub.com/gitpython-developers/GitPython/pull/1879) - Replace all wildcard imports with explicit imports by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1880](https://togithub.com/gitpython-developers/GitPython/pull/1880) - Clarify how tag objects are usually tree-ish and commit-ish by [@​EliahKagan](https://togithub.com/EliahKagan) in [https://github.com/gitpython-developers/GitPython/pull/1881](https://togithub.com/gitpython-developers/GitPython/pull/1881) #### New Contributors - [@​Gaubbe](https://togithub.com/Gaubbe) made their first contribution in [https://github.com/gitpython-developers/GitPython/pull/1846](https://togithub.com/gitpython-developers/GitPython/pull/1846) - [@​can-taslicukur](https://togithub.com/can-taslicukur) made their first contribution in [https://github.com/gitpython-developers/GitPython/pull/1832](https://togithub.com/gitpython-developers/GitPython/pull/1832) - [@​jcole-crowdstrike](https://togithub.com/jcole-crowdstrike) made their first contribution in [https://github.com/gitpython-developers/GitPython/pull/1853](https://togithub.com/gitpython-developers/GitPython/pull/1853) - [@​Borda](https://togithub.com/Borda) made their first contribution in [https://github.com/gitpython-developers/GitPython/pull/1862](https://togithub.com/gitpython-developers/GitPython/pull/1862) **Full Changelog**: gitpython-developers/GitPython@3.1.42...3.1.43 </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about these updates again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/lettuce-financial/github-bot-signed-commit). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4yNjkuMiIsInVwZGF0ZWRJblZlciI6IjM3LjI2OS4yIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->
The
Tree_ish
union omittedTagObject
, whose instances are only sometimes tree-ish, and unlikeCommit_ish
before #1859, it is not inherently a bug to defineTree_ish
this way.However, this
Tree_ish
type actually has only one use in GitPython (which was also the case before the changes in #1859): as, itself, an alternative in the union used to annotate the rev parameter of theRepo.tree
method (whose other alternatives arestr
andNone
). ATagObject
may be passed, and if it points to a tree or commit then that will be resolved. Just to avoid a mypy error, code doing that would (before this change) have to convert it tostr
first.That annotation should be improved, and the best way to do it is to keep it written the same way but change the definition of
Tree_ish
ingit.types
to includeTagObject
. The reason is that doing so alleviates a major unintuitive aspect of the relationship between theCommit_ish
andTree_ish
types:Commit_ish
was broader than everything commit-ish, whileTree_ish
was narrower than everything tree-ish.I had not considered making this change in #1859 because I didn't want to modify
Tree_ish
unnecessarily, and its definition was not inherently a bug. However, the change toCommit_ish
is sufficiently large (though it only affects static typing) that a change toTree_ish
to make them coherent and intuitive may be justified.This pull request changes
Tree_ish
so that, in addition to itsCommit
andTree
alternatives, it also includesTagObject
. This also updates and simplifies its docstring accordingly, bringing it in line with that ofCommit_ish
which is already defined with the same kind of breadth, and further revises both docstrings to more explicitly clarify when tags are tree-ish or commit-ish and when they are not.Notes
This is related to #1859 (comment).
This does not change the separate nonpublic
Treeish
type defined ingit.index.base
(and named with no underscore), which omitsTagObject
but includesbytes
andstr
, and which is used to annotate parameters of theIndexFile.from_tree
andIndexFile.merge_tree
methods. Changes there may be valuable, but the goal here is just to build narrowly on #1859 to address a shortcoming of the revisions togit.types
.