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**Motivation** Previously, we would install any wheel with the correct
package name and version from the cache, even if it doesn't match the
current python interpreter.
**Summary** The unzipped wheel cache for registries now uses the entire
wheel filename over the name-version (`editables-0.5-py3-none-any.whl`
over `editables-0.5`).
Built wheels are not stored in the `wheels-v0` unzipped wheels cache
anymore. For each source distribution, there can be multiple built
wheels (with different compatibility tags), so i argue that we need a
different cache structure for them (follow up PR).
For `all-kinds.in` with
```bash
rm -rf cache-all-kinds
virtualenv --clear -p 3.12 .venv
cargo run --bin puffin -- pip-sync --cache-dir cache-all-kinds target/all-kinds.txt
```
we get:
**Before**
```
cache-all-kinds/wheels-v0/
├── registry
│ ├── annotated_types-0.6.0
│ ├── asgiref-3.7.2
│ ├── blinker-1.7.0
│ ├── certifi-2023.11.17
│ ├── cffi-1.16.0
│ ├── [...]
│ ├── tzdata-2023.3
│ ├── urllib3-2.1.0
│ └── wheel-0.42.0
└── url
├── 4b8be67c801a7ecb
│ ├── flask
│ └── flask-3.0.0.dist-info
├── 6781bd6440ae72c2
│ ├── werkzeug
│ └── werkzeug-3.0.1.dist-info
└── a67db8ed076e3814
├── pydantic_extra_types
└── pydantic_extra_types-2.1.0.dist-info
48 directories, 0 files
```
**After**
```
cache-all-kinds/wheels-v0/
├── registry
│ ├── annotated_types-0.6.0-py3-none-any.whl
│ ├── asgiref-3.7.2-py3-none-any.whl
│ ├── blinker-1.7.0-py3-none-any.whl
│ ├── certifi-2023.11.17-py3-none-any.whl
│ ├── cffi-1.16.0-cp312-cp312-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
│ ├── [...]
│ ├── tzdata-2023.3-py2.py3-none-any.whl
│ ├── urllib3-2.1.0-py3-none-any.whl
│ └── wheel-0.42.0-py3-none-any.whl
└── url
└── 4b8be67c801a7ecb
└── flask-3.0.0-py3-none-any.whl
39 directories, 0 files
```
**Outlook** Part of #477 "Fix wheel caching". Further tasks:
* Replace the `CacheShard` with `WheelMetadataCache` which handles urls
properly.
* Delete unzipped wheels when their remote wheel changed
* Store built wheels next to the `metadata.json` in the source dist
directory; delete built wheels when their source dist changed (different
cache bucket, but it's the same problem of fixing wheel caching) I'll
make stacked PRs for those
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| Cargo.toml | ||