uv python find doesn't find python3.12 binary in $PATH when looking for ==3.12.8 #9695
Description
On my system I have both python3.13.0 and python3.12.8 installed through homebrew:
% which python3
/opt/homebrew/bin/python3
% which python3.12
/opt/homebrew/bin/python3.12
% python3 --version
Python 3.13.0
% python3.12 --version
Python 3.12.8
uv python list is aware of both of them:
% cat ~/.config/uv/uv.toml
python-preference = "only-system"
% uv python list
cpython-3.13.0-macos-aarch64-none /opt/homebrew/opt/python@3.13/bin/python3.13 -> ../Frameworks/Python.framework/Versions/3.13/bin/python3.13
cpython-3.12.8-macos-aarch64-none /opt/homebrew/opt/python@3.12/bin/python3.12 -> ../Frameworks/Python.framework/Versions/3.12/bin/python3.12
cpython-3.9.6-macos-aarch64-none /Applications/Xcode.app/Contents/Developer/usr/bin/python3 -> ../../Library/Frameworks/Python3.framework/Versions/3.9/bin/python3
But can only find one of them:
% uv python find '==3.13.0'
/opt/homebrew/opt/python@3.13/bin/python3.13
% uv python find '==3.12.8'
error: No interpreter found for Python ==3.12.8 in virtual environments or search path
Or with more logging:
% RUST_LOG=uv=trace uv python list
DEBUG uv 0.5.6 (Homebrew 2024-12-03)
DEBUG Searching for any Python interpreter in search path
TRACE Searching PATH for executables: python, python3, cpython, cpython3, pypy, pypy3, graalpy, graalpy3
TRACE Checking `PATH` directory for interpreters: /opt/homebrew/bin
TRACE Found possible Python executable: /opt/homebrew/bin/python3
TRACE Cached interpreter info for Python 3.13.0, skipping probing: /opt/homebrew/bin/python3
DEBUG Found `cpython-3.13.0-macos-aarch64-none` at `/opt/homebrew/bin/python3` (search path)
TRACE Found possible Python executable: /opt/homebrew/bin/python3.12
TRACE Cached interpreter info for Python 3.12.8, skipping probing: /opt/homebrew/bin/python3.12
DEBUG Found `cpython-3.12.8-macos-aarch64-none` at `/opt/homebrew/bin/python3.12` (search path)
TRACE Found possible Python executable: /opt/homebrew/bin/python3.13
TRACE Cached interpreter info for Python 3.13.0, skipping probing: /opt/homebrew/bin/python3.13
DEBUG Found `cpython-3.13.0-macos-aarch64-none` at `/opt/homebrew/bin/python3.13` (search path)
TRACE Checking `PATH` directory for interpreters: /opt/homebrew/sbin
TRACE Checking `PATH` directory for interpreters: /usr/local/bin
TRACE Checking `PATH` directory for interpreters: /System/Cryptexes/App/usr/bin
TRACE Checking `PATH` directory for interpreters: /usr/bin
TRACE Found possible Python executable: /usr/bin/python3
TRACE Querying interpreter executable at /usr/bin/python3
DEBUG Found `cpython-3.9.6-macos-aarch64-none` at `/usr/bin/python3` (search path)
TRACE Checking `PATH` directory for interpreters: /bin
TRACE Checking `PATH` directory for interpreters: /usr/sbin
TRACE Checking `PATH` directory for interpreters: /sbin
TRACE Checking `PATH` directory for interpreters: /Library/Apple/usr/bin
TRACE Checking `PATH` directory for interpreters: /Users/aloenr01/.cargo/bin
TRACE Checking `PATH` directory for interpreters: /Applications/iTerm.app/Contents/Resources/utilities
cpython-3.13.0-macos-aarch64-none /opt/homebrew/opt/python@3.13/bin/python3.13 -> ../Frameworks/Python.framework/Versions/3.13/bin/python3.13
cpython-3.12.8-macos-aarch64-none /opt/homebrew/opt/python@3.12/bin/python3.12 -> ../Frameworks/Python.framework/Versions/3.12/bin/python3.12
cpython-3.9.6-macos-aarch64-none /Applications/Xcode.app/Contents/Developer/usr/bin/python3 -> ../../Library/Frameworks/Python3.framework/Versions/3.9/bin/python3
% RUST_LOG=uv=trace uv python find '==3.13.0'
DEBUG uv 0.5.6 (Homebrew 2024-12-03)
DEBUG Using Python request `==3.13.0` from explicit request
DEBUG Searching for Python ==3.13.0 in virtual environments or search path
TRACE Searching PATH for executables: python3, python
TRACE Checking `PATH` directory for interpreters: /opt/homebrew/bin
TRACE Found possible Python executable: /opt/homebrew/bin/python3
TRACE Cached interpreter info for Python 3.13.0, skipping probing: /opt/homebrew/bin/python3
DEBUG Found `cpython-3.13.0-macos-aarch64-none` at `/opt/homebrew/bin/python3` (search path)
/opt/homebrew/opt/python@3.13/bin/python3.13
% RUST_LOG=uv=trace uv python find '==3.12.8'
DEBUG uv 0.5.6 (Homebrew 2024-12-03)
DEBUG Using Python request `==3.12.8` from explicit request
DEBUG Searching for Python ==3.12.8 in virtual environments or search path
TRACE Searching PATH for executables: python3, python
TRACE Checking `PATH` directory for interpreters: /opt/homebrew/bin
TRACE Found possible Python executable: /opt/homebrew/bin/python3
TRACE Cached interpreter info for Python 3.13.0, skipping probing: /opt/homebrew/bin/python3
DEBUG Found `cpython-3.13.0-macos-aarch64-none` at `/opt/homebrew/bin/python3` (search path)
DEBUG Skipping interpreter at `/opt/homebrew/opt/python@3.13/bin/python3.13` from search path: does not satisfy request `==3.12.8`
TRACE Checking `PATH` directory for interpreters: /opt/homebrew/sbin
TRACE Checking `PATH` directory for interpreters: /usr/local/bin
TRACE Checking `PATH` directory for interpreters: /System/Cryptexes/App/usr/bin
TRACE Checking `PATH` directory for interpreters: /usr/bin
TRACE Found possible Python executable: /usr/bin/python3
TRACE Querying interpreter executable at /usr/bin/python3
DEBUG Found `cpython-3.9.6-macos-aarch64-none` at `/usr/bin/python3` (search path)
DEBUG Skipping interpreter at `/Applications/Xcode.app/Contents/Developer/usr/bin/python3` from search path: does not satisfy request `==3.12.8`
TRACE Checking `PATH` directory for interpreters: /bin
TRACE Checking `PATH` directory for interpreters: /usr/sbin
TRACE Checking `PATH` directory for interpreters: /sbin
TRACE Checking `PATH` directory for interpreters: /Library/Apple/usr/bin
TRACE Checking `PATH` directory for interpreters: /Users/aloenr01/.cargo/bin
TRACE Checking `PATH` directory for interpreters: /Applications/iTerm.app/Contents/Resources/utilities
error: No interpreter found for Python ==3.12.8 in virtual environments or search path
What I think is happening is that uv python list code does this:
uv/crates/uv-python/src/discovery.rs
Lines 499 to 501 in 3aaa959
where the find_all_minor means it can pick up on /opt/homebrew/bin/python3.12.
But when asking for ==3.12.8 specifically, it doesn't consider that 3.12 could be it:
uv/crates/uv-python/src/discovery.rs
Lines 579 to 581 in 3aaa959
_Originally posted by in #9668, but that issue was unrelated. CC @zanieb _
System Information:
- uv 0.5.6 (Homebrew 2024-12-03)
- macOS Sonoma 14.7.1 (23H222)
- arm64