Infra Update v4 for Special Repos: Support spack.repos, Add Tiered Common Configuration Via spack.include

[CodeGat]

Closes #8

Note

This PR incorporates major build-ci changes into this repository, due to the deprecation of inputs.*-spack-packages-ref and inputs.spack-manifest-data-path

Background

More info and motivations in the linked issue, but essentially:

• Deprecating inputs.*-spack-packages-ref in favor of in-manfiest spack.repos section, like MDRs. By default, it will use the PR branch for access-spack-packages, and the latest access/v1.1 for builtin spack packages. This can be changed via local spack-config config specified in .github/build-ci/config, or alternatively in this repository itself!
• Deprecating inputs.spack-manifest-data-path in favor of tiered configuration via spack.include.

The two main entrypoints will work as follows with this update:

PR Workflow

builtin spack packages repo: will use the PR branch as normal, via build-ci using the caller repo as the builtin (see the .github/build-ci/config/ section).
access-spack-packages repo: Will use api-v2 branch by default. To use a different branch, edit .github/build-ci/config/repos.yaml and add a access_spack_packages entry like so:

# ...
  access_spack_packages:
    git: https://github.com/ACCESS-NRI/access-spack-packages.git
    branch: YOUR_BRANCH
    destination: $env/package-repos/access-spack-packages

Workflow Dispatch

builtin spack packages repo: Will need to use Use workflow from... dropdown, picking the appropriate builtin branch or tag.
access-spack-packages repo: Will need to use Use workflow from... dropdown, picking the appropriate ASP branch or tag, in which a .github/build-ci/config/repos.yaml is edited to use a different access_spack_packages ref. See above for an example.

The PR

• Update the workflow entrypoints, as usual!
• Remove any inputs.spack-manifest-data-path values and inline them into manifests. Delete .github/build-ci/data/standard.json.
• Remove inputs.*-spack-packages-ref, using the local ASP config to set those values.
• Add .github/build-ci/config so PRs from this repo use the PR branch, rather than the default access/v1.1 branch. See Base spack.includes for build-ci access-spack-packages#486 for more info on caller configuration.

Testing

Tested in https://github.com/ACCESS-NRI/upstream-spack-packages/actions/runs/35689962216?pr=10 - all packages succeeded except for https://github.com/ACCESS-NRI/upstream-spack-packages/actions/runs/35689962216/job/106626312258?pr=10, this was due to it being excluded in the CICE repo but not upstream.

[harshula]

Reviewed with the help of Claude Opus 5.5 via Zoom VC.