Non-default system-installed Python versions not listed

[mgaitan]

I have 3 different Python versions installed on my system (Ubuntu 24.04). The default is 3.12, and I have 3.8 and 3.10 installed via PPAs.

tin@morocha:~/lab$ ls /usr/bin/python3.*
/usr/bin/python3.10  /usr/bin/python3.12  /usr/bin/python3.12-config  /usr/bin/python3.8  /usr/bin/python3.8-config

I expect uv python list to show all these versions as available. However, only the default (3.12.3) is shown, and 3.10.14 and 3.8.19 are listed as "download available" even though they are already installed (not uv managed).

tin@morocha:~/lab$ uv python list
warning: `uv python list` is experimental and may change without warning.
cpython-3.12.4-linux-x86_64-gnu     <download available>
cpython-3.12.3-linux-x86_64-gnu     /usr/bin/python3
cpython-3.12.3-linux-x86_64-gnu     /usr/bin/python
cpython-3.12.3-linux-x86_64-gnu     /bin/python3
cpython-3.12.3-linux-x86_64-gnu     /bin/python
cpython-3.11.9-linux-x86_64-gnu     <download available>
cpython-3.10.14-linux-x86_64-gnu    <download available>
cpython-3.9.19-linux-x86_64-gnu     <download available>
cpython-3.8.19-linux-x86_64-gnu     <download available>
cpython-3.7.9-linux-x86_64-gnu      <download available>

tin@morocha:~/lab$ python3.10 --version
Python 3.10.14
tin@morocha:~/lab$ python3.8 --version
Python 3.8.19

uv version

tin@morocha:~/lab$ uv --version
uv 0.2.26

[zanieb]

Thanks for the report! I think this is solved by #5148 which will be in the next release.

[mgaitan]

it's fixed !

tin@morocha:~/lab$ uv --version
uv 0.2.27
tin@morocha:~/lab$ uv python list
warning: `uv python list` is experimental and may change without warning
cpython-3.12.4-linux-x86_64-gnu     <download available>
cpython-3.12.3-linux-x86_64-gnu     /usr/bin/python3.12
cpython-3.12.3-linux-x86_64-gnu     /usr/bin/python3
cpython-3.12.3-linux-x86_64-gnu     /usr/bin/python
cpython-3.12.3-linux-x86_64-gnu     /bin/python3.12
cpython-3.12.3-linux-x86_64-gnu     /bin/python3
cpython-3.12.3-linux-x86_64-gnu     /bin/python
cpython-3.11.9-linux-x86_64-gnu     <download available>
cpython-3.10.14-linux-x86_64-gnu    /usr/bin/python3.10
cpython-3.10.14-linux-x86_64-gnu    /bin/python3.10
cpython-3.10.14-linux-x86_64-gnu    <download available>
cpython-3.9.19-linux-x86_64-gnu     <download available>
cpython-3.8.19-linux-x86_64-gnu     /usr/bin/python3.8
cpython-3.8.19-linux-x86_64-gnu     /bin/python3.8
cpython-3.8.19-linux-x86_64-gnu     <download available>
cpython-3.7.9-linux-x86_64-gnu      <download available>

QQ: Does it have sense to list symbolic links?

For instance, several of the above items points to the same executable

tin@morocha:~/lab$ file /usr/bin/python3.12
/usr/bin/python3.12: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=d575bfe93b720eb1f8398b1c56ba864b3d9089bd, for GNU/Linux 3.2.0, stripped
tin@morocha:~$ file /usr/bin/python3
/usr/bin/python3: symbolic link to python3.12

PS: I'm eager to be able to install cpython-3.13 beta via uv!

[zanieb]

Opened #5308 for that.

Python 3.13 is WIP at indygreg/python-build-standalone#264