Use toolchain from xcode-select

[jpsim]

No description provided.

[norio-nomura]

As I saw #153 (comment), I feel we need doing this.

[norio-nomura]

did I misunderstand this?
I understood this as:

• sourcekitten loads sourcekitd.framework from directory tree that xcode-select -p pointing.
• xcode-select -p are referred on runtime.

I wrote #172 and #176 based on that…

[jpsim]

Yes, you understood this correctly and #172 & #176 seem like great solutions to this! I'm just trying to understand all the complexities required by the implementations in those PRs, and I'm starting to understand.

Looks like you did great work there! It's just taking me a long time to comprehend what all of it means.

[norio-nomura]

Thanks, I was relieved. 😌

[jpsim]

Done by @norio-nomura 👏 🎉