fix: metal on conda on a13 and higher

[Leikoe]

metal not compiling successfully on conda is due to a wrong compile requestType. This can be fixed the following ways:

• compile with a fairly recent libSystem.B.dylib
• compiling a dynamic lib
• patch Metal
• compiling a executable library (as we do right now) + linking to any dynamic libary

This fix is using the last way. It will work on any mac which supports dynamic library and will only trigger then. For older devices it won't change anything.

[Leikoe]

fixes on apple silicon #2226

[geohot]

Bad spacing. Don't use globals.

[chenyuxyz]

bad indent-width

[geohot]

Can we submit this request with the correct requestType directly instead of using this hack?

[Leikoe]

No, I looked for other ways but apple expects you not to use libraryDataContents and therefore store incomplete library data on some versions. The only way to do it properly is either to recompile and pray for system cache or use things with very limited support (BinaryArchive).

[github-actions]

Changes

Name                             Lines    Diff    Tokens/Line    Diff
-----------------------------  -------  ------  -------------  ------
tinygrad/runtime/ops_metal.py      110     +10           11.8    -0.1


total lines changes: +10

[Leikoe]

If you were to call private C++ apis from Metal internals you could send the proper requestType but that wouldn't be supported everywhere, this hack is not as bad.