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stackinator 7: spack version 1.2 support#298

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bcumming merged 22 commits into
eth-cscs:mainfrom
bcumming:spack1.2
Jun 24, 2026
Merged

stackinator 7: spack version 1.2 support#298
bcumming merged 22 commits into
eth-cscs:mainfrom
bcumming:spack1.2

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A PR for folk to start testing the new functionality.
There will be some breaking changes.

bcumming added a commit that referenced this pull request Jun 23, 2026
Add support for spack 1.2 in stackinator 6

This adds support for quirks of Spack 1.2 to the current version of
stackinator that can targets Spack 1.0 and 1.1.

* disable the new Spack installer (making it work properly requires deep
plumbing changes that might affect compatibility with 1.0 and 1.1.
* insert the `--yes-to-all` flag to `uenv buildcache` calls when using
Spack 1.2

This also improves how the Spack version is determined and used in the
Jinja templates.

Note that this is separate from Stackinator v7, which supports Spack 1.2
more thoroughly (with no backwards compatibility with v1.1 and v1.0):
#298
@bcumming bcumming merged commit e3188bb into eth-cscs:main Jun 24, 2026
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