BpfLoader211111... programs can't CPI into BpfLoader111111.. programs

[hendrikhofstadt]

Problem

fetch-spl.sh uses the deprecated BpfLoader11111 which breaks the default SPL programs when launched via the runscript.

Proposed Solution

SPL in the runscript should compiled for and use the new BpfLoader211111.

[mvines]

Hmm, that's strange. fetch-spl.sh downloads the 1.0.0 version of the SPL programs, which require the old loader and will not work with the new loader. Maybe something else is going on in your environment @hendrikhofstadt?

[hendrikhofstadt]

@mvines Technially it's "working" but I can't CPI into the old token program. I misworded the issue I think.

Are there plans to support CPI between incompatible BPFLoader versions?

[mvines]

Ah, that makes sense. Yes we need to support that, since we can't force spl-token 1.0.0s to upgrade. I fixed the title of the issue to reflect this.