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我正在尝试让 PyO3 在我的 Mac M1 mini 上工作。如果我按照步骤开始使用 PyO3：

$ mkdir string_sum
$ cd string_sum
$ python -m venv .env
$ source .env/bin/activate
$ pip install maturin

我得到“rustc ...未安装或不在PATH中”：

> maturin init
✔  What kind of bindings to use? · pyo3
  ✨ Done! Initialized project /Users/tweedle/projects/string_sum
> maturin develop
 maturin failed
  Caused by: rustc, the rust compiler, is not installed or not in PATH. This package requires Rust and Cargo to compile extensions. Install it through the system's package manager or via https://rustup.rs/.

我看到这个错误在 PyO3 问题中出现了很多，但通常通过安装 rustup 来解决。但是我已经安装了 rustup 并且在路径上：

❯ rustc --version
rustc 1.58.1 (db9d1b20b 2022-01-20)
> rustup which rustc
/Users/tweedle/.rustup/toolchains/stable-aarch64-apple-darwin/bin/rustc
> export PATH="$PATH:~/.rustup/toolchains/stable-aarch64-apple-darwin/bin:~/.cargo/bin"
> maturin develop
 maturin failed
  Caused by: rustc, the rust compiler, is not installed or not in PATH. This package requires Rust and Cargo to compile extensions. Install it through the system's package manager or via https://rustup.rs/.

（再次添加到 PATH 以确保。）我也尝试了 x86 工具链，结果相同。Cargo build 在 maturin 生成的string_sumrust 代码上也运行良好：

> cargo build
    Updating crates.io index
   Compiling proc-macro2 v1.0.36
   Compiling unicode-xid v0.2.2
   Compiling pyo3-build-config v0.15.1
   Compiling syn v1.0.86
   Compiling proc-macro-hack v0.5.19
   Compiling once_cell v1.9.0
   Compiling libc v0.2.116
   Compiling cfg-if v1.0.0
   Compiling parking_lot_core v0.8.5
   Compiling scopeguard v1.1.0
   Compiling smallvec v1.8.0
   Compiling unindent v0.1.7
   Compiling instant v0.1.12
   Compiling lock_api v0.4.6
   Compiling quote v1.0.15
   Compiling parking_lot v0.11.2
   Compiling pyo3 v0.15.1
   Compiling paste-impl v0.1.18
   Compiling paste v0.1.18
   Compiling pyo3-macros-backend v0.15.1
   Compiling indoc-impl v0.3.6
   Compiling indoc v0.3.6
   Compiling pyo3-macros v0.15.1
   Compiling string_sum v0.1.0 (/Users/tweedle/projects/string_sum)
    Finished dev [unoptimized + debuginfo] target(s) in 9.73s

我的 M1 设置、自制设置、rust 设置、python 设置或其他我错过的东西是不是很奇怪？

更多信息：

> neofetch
                    'c.          tweedle@mini.local
                 ,xNMM.          ------------------
               .OMMMMo           OS: macOS 12.2 21D49 arm64
               OMMM0,            Host: Macmini9,1
     .;loddo:' loolloddol;.      Kernel: 21.3.0
   cKMMMMMMMMMMNWMMMMMMMMMM0:    Uptime: 1 day, 2 hours, 12 mins
 .KMMMMMMMMMMMMMMMMMMMMMMMWd.    Packages: 116 (brew)
 XMMMMMMMMMMMMMMMMMMMMMMMX.      Shell: bash 5.1.16
;MMMMMMMMMMMMMMMMMMMMMMMM:       Resolution: 1920x1080
:MMMMMMMMMMMMMMMMMMMMMMMM:       DE: Aqua
.MMMMMMMMMMMMMMMMMMMMMMMMX.      WM: Rectangle
 kMMMMMMMMMMMMMMMMMMMMMMMMWd.    Terminal: kitty
 .XMMMMMMMMMMMMMMMMMMMMMMMMMMk   CPU: Apple M1
  .XMMMMMMMMMMMMMMMMMMMMMMMMK.   GPU: Apple M1
    kMMMMMMMMMMMMMMMMMMMMMMd     Memory: 1975MiB / 16384MiB
     ;KMMMMMMMWXXWMMMMMMMk.
       .cooc,.    .,coo:.

> rustup --version
rustup 1.24.3 (ce5817a94 2021-05-31)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active `rustc` version is `rustc 1.58.1 (db9d1b20b 2022-01-20)`
> rustc --version
rustc 1.58.1 (db9d1b20b 2022-01-20)
> python --version
Python 3.9.10
> maturin --version
maturin 0.12.6

我也尝试过使用setuptools-rust类似的效果，既直接调用 setup.py 也使用pip install ..

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