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ci: Bump AppVeyor image to Visual Studio 2026 - #32237

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ci: Bump AppVeyor image to Visual Studio 2026#32237
QuLogic wants to merge 1 commit into
matplotlib:mainfrom
QuLogic:appveyor-bump

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@QuLogic

@QuLogic QuLogic commented Aug 22, 2026

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PR summary

Sometimes weird things can happen when path lengths are close to the limit on Windows (which has MAX_PATH=260). Evidentally, something changed in micromamba to go over the limit in 2.9.0. Based on [1], long path support should be enabled, but requires a newer version of Windows. Since this job is mostly about conda-forge, and we don't use much from the system, it should be fine to bump the builder.

Note, that I had to update the schema as well [2].

[1] mamba-org/mamba#4342
[2] SchemaStore/schemastore#6233

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PR quality check

  • Use an expressive title, e.g. "Fix title font property precedence"
  • New and changed code is tested
  • [n/a] Plotting related features are demonstrated in an example
  • [n/a] New features and API changes have release notes
  • [n/a] Documentation complies with general and docstring guidelines

Sometimes weird things can happen when path lengths are close to the
limit on Windows (which has `MAX_PATH`=260). Evidentally, something
changed in micromamba to go over the limit in 2.9.0. Based on [1], long
path support should be enabled, but requires a newer version of Windows.
Since this job is mostly about conda-forge, and we don't use much from
the system, it should be fine to bump the builder.

Note, that I had to update the schema as well [2].1

[1] mamba-org/mamba#4342
[2] SchemaStore/schemastore#6233
@QuLogic

QuLogic commented Aug 22, 2026

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Upon further investigation, I believe the AppVeyor failure to be a bug in micromamba: mamba-org/mamba#4392

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