Commits on Feb 29, 2024

1. virtualenv: determine 'site-packages' based on implementation name …

   I'm not at all sure whether this is a correct fix or not, but it does
   seem to make `pypy` work in at least some cases with `uv`. Previously,
   I couldn't get it to work at all. Namely the virtualenv was created
   with a `lib/python3.10/site-packages`, but whenever I did a `uv
   pip install` in that virtualenv, it was looking for a non-existent
   `lib/pypy3.10/site-packages` directory.
   
   With this PR, the workflow reported as not working in #1488 now works
   for me:
   
   ```
   $ pypy3 --version
   Python 3.10.13 (fc59e61cfbff, Jan 17 2024, 05:35:45)
   [PyPy 7.3.15 with GCC 13.2.1 20230801]
   
   $ uv venv --python $(which pypy3) --seed
   Using Python 3.10.13 interpreter at: /usr/bin/pypy3
   Creating virtualenv at: .venv
    + pip==24.0
    + setuptools==69.1.1
    + wheel==0.42.0
   Activate with: source .venv/bin/activate
   
   $ uv pip install 'alembic==1.0.11'
   Resolved 9 packages in 8ms
   Installed 9 packages in 14ms
    + alembic==1.0.11
    + greenlet==3.0.3
    + mako==1.3.2
    + markupsafe==2.1.5
    + python-dateutil==2.8.2
    + python-editor==1.0.4
    + six==1.16.0
    + sqlalchemy==2.0.27
    + typing-extensions==4.10.0
   ```
   
   Where as previously (current `main`), I was hitting this error:
   
   ```
   $ uv venv --python $(which pypy3) --seed
   Using Python 3.10.13 interpreter at: /usr/bin/pypy3
   Creating virtualenv at: .venv
    + pip==24.0
    + setuptools==69.1.1
    + wheel==0.42.0
   Activate with: source .venv/bin/activate
   
   $ uv pip install 'alembic==1.0.11'
   error: Failed to list installed packages
     Caused by: failed to read directory `/home/andrew/astral/issues/uv/i1488/.venv/lib/pypy3.10/site-packages`
     Caused by: No such file or directory (os error 2)
   ```
   
   Notice though that neither outcome above matches the error reported in #1488,
   so this is likely not a complete fix. There are perhaps other lurking
   issues.
   
   Ref #1488

   

   BurntSushi committed Feb 29, 2024
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2. uv-interpreter: cut alternative implementation of site-packages python …

   This is a separate commit so that the alternative is preserved in
   history.

   

   BurntSushi committed Feb 29, 2024
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