uv pip compile --universal gives contradictory versions of same packages #6269
Description
Affected versions: uv 0.2.30 to uv 0.3.0+
Steps to reproduce:
- Create
requirements.in:
alembic==1.8.1
ipython>=8.4.0
pylint>=2.14.5
- Create
constraints.txt:
dill==0.3.1.1
exceptiongroup==1.0.0rc8
- Run the uv command:
$ uv pip compile requirements.in -c constraints.txt --universal --python-version 3.10 --annotation-style line 2>/dev/null | grep "astroid=="
astroid==2.13.5 # via pylint
astroid==3.2.4 ; python_full_version < '3.11' # via pylint
Which, if you try and install on Python 3.10 gives you:
× No solution found when resolving dependencies:
╰─▶ Because you require astroid==2.13.5 and astroid{python_full_version < '3.11'}==3.2.4, we can conclude that your requirements are unsatisfiable.