Disable OCI cache usage for jobs w/o install prefix "/esd"

Changes in CI file allow to use existing spack deployments w/o cache. Disables the use of the cache for all jobs that don't install packages to /esd/vendor/spack/opt/spack/… as we can't guarantee that the relocation will work (it is known that, e.g., R includes absolute paths to tools like which breaking any relocation atm).

assigned to @elmath

added 2 commits

• cf60ed7e - fix: omit OCI cache handling code if cache isn't specified
• 29c49093 - chore: disable oci cache usage for all CI jobs

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changed title from fix: omit OCI cache handling code if cache isn't specified to Disable OCI cache usage for jobs w/o install prefix "/esd"

changed the description

In !624 (merged) we learned that relocation (i.e. installing from build cache to a different location than when the build cache entry was created) breaks packages, e.g., R (using a absolute path to the tool which — somewhat WTF, but whatever) and also py-jupyter(-server?) — for now, we will just disable the usage of the cache for CI jobs that use different install prefixes.

:(

resolved all threads

added 1 commit

• e4a7ca01 - chore: disable oci cache usage for all CI jobs

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added 3 commits

• a000bba0 - 1 commit from branch master
• 7be11a20 - fix: omit OCI cache handling code if cache isn't specified
• 3885bdc9 - chore: disable oci cache usage for all CI jobs

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added 2 commits

• 48541cc2 - fix: omit OCI cache handling code if cache isn't specified
• e662ac77 - chore: disable oci cache usage for all CI jobs

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merged