Move architecture and operating system probing to Python (#2381)

The architecture of uv does not necessarily match that of the python
interpreter (#2326). In cross compiling/testing scenarios the operating
system can also mismatch. To solve this, we move arch and os detection
to python, vendoring the relevant pypa/packaging code, preventing
mismatches between what the python interpreter was compiled for and what
uv was compiled for.

To make the scripts more manageable, they are now a directory in a
tempdir and we run them with `python -m` . I've simplified the
pypa/packaging code since we're still building the tags in rust. A
`Platform` is now instantiated by querying the python interpreter for
its platform. The pypa/packaging files are copied verbatim for easier
updates except a `lru_cache()` python 3.7 backport.

Error handling is done by a `"result": "success|error"` field that allow
passing error details to rust:

```console
$ uv venv --no-cache
  × Can't use Python at `/home/konsti/projects/uv/.venv/bin/python3`
  ╰─▶ Unknown operation system `linux`
```

I've used the [maturin sysconfig
collection](https://github.com/PyO3/maturin/tree/855f6d2cb1fb8fb43c2bb9e500ab0e5e84bd3140/sysconfig)
as reference. I'm unsure how to test these changes across the wide
variety of platforms.

Fixes #2326

Cargo.toml

@@ -67,7 +67,6 @@ owo-colors = { version = "4.0.0" }
 pathdiff = { version = "0.2.1" }
 petgraph = { version = "0.6.4" }
 platform-info = { version = "2.0.2" }
-plist = { version = "1.6.0" }
 pubgrub = { git = "https://github.com/zanieb/pubgrub", rev = "b5ead05c954b81690aec40255a1c36ec248e90af" }
 pyo3 = { version = "0.20.3" }
 pyo3-log = { version = "0.9.0" }

crates/install-wheel-rs/Cargo.toml

@@ -22,7 +22,7 @@ name = "install_wheel_rs"
 [dependencies]
 distribution-filename = { path = "../distribution-filename" }
 pep440_rs = { path = "../pep440-rs" }
-platform-host = { path = "../platform-host" }
+platform-tags = { path = "../platform-tags" }
 uv-normalize = { path = "../uv-normalize" }
 uv-fs = { path = "../uv-fs" }
 pypi-types = { path = "../pypi-types" }
@@ -36,7 +36,6 @@ mailparse = { workspace = true }
 once_cell = { workspace = true }
 pathdiff = { workspace = true }
 platform-info = { workspace = true }
-plist = { workspace = true }
 reflink-copy = { workspace = true }
 regex = { workspace = true }
 rustc-hash = { workspace = true }

crates/install-wheel-rs/src/lib.rs

@@ -9,7 +9,7 @@ use thiserror::Error;
 use zip::result::ZipError;
 
 use pep440_rs::Version;
-use platform_host::{Arch, Os};
+use platform_tags::{Arch, Os};
 use pypi_types::Scheme;
 pub use uninstall::{uninstall_wheel, Uninstall};
 use uv_fs::Simplified;