build: --workspace (rust-analyzer default check) and -p risingwave_cmd_all doesn't share cache

[xxchan]

So under default setting, rust-analyzer first checks and risedev p/d is blocked. After it finishes, risedev p/d rebuilds.

possible solutions

• (known to work) "rust-analyzer.cargo.targetDir": true: make them completely separate, and unblock each other. But waste disk and CPU
• (?) Configure RA to use -p risingwave_cmd_all
• (?) Change some workspace config in Cargo.toml to make --workspace work better
• (?) Bring back hakari...

[github-actions]

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