pip-sync 7.0.0 reinstalls packages due to case difference

[sshishov]

Description

pip-sync 7.0.0 reinstalls all packages which have non-lowercase letters in their names

For instance in *.in and *.txt files we have the following data:

django

and

django==4.2.0
  ...

When we run pip sync, it will uninstall and install django because in pip-freeze the same package mentioned as Django

Environment Versions

Required	Information
OS Type	MacOs/Linux
Python version: $ python -V	Python 3.11.4
pip version: $ pip --version:	pip 23.2 from /home/user/venv/lib/python3.11/site-packages/pip (python 3.11)
pip-tools version: $ pip-compile --version	pip-compile, version 7.0.0

Steps to replicate

1. Create *.in file with django requirement
2. Compile requirements to generate *.txt file
3. Run pip-sync on the txt file
4. Run pip-sync on the txt file again

Expected result

The output should be Everything up-to-date

Actual result

The requirement is reinstalled every time you run pip-sync

[atugushev]

Thanks for the issue! See #1917 (comment) for details.

[atugushev]

@sshishov could you test this fix #1919? Does it resolve the issue?

pip install git+https://github.com/atugushev/pip-tools@fix-broken-sync-diff

[sshishov]

@atugushev going to test it now, sorry for the long reply.

As we are using pip-tools in our dependencies, the pip-tools is also pinned... but what I did is:

(venv) user@40264cddaa4a:~/app/src$ pip install git+https://github.com/atugushev/pip-tools@fix-broken-sync-diff
Collecting git+https://github.com/atugushev/pip-tools@fix-broken-sync-diff
  Cloning https://github.com/atugushev/pip-tools (to revision fix-broken-sync-diff) to /tmp/pip-req-build-dabswewr
  Running command git clone --filter=blob:none --quiet https://github.com/atugushev/pip-tools /tmp/pip-req-build-dabswewr
  Running command git checkout -b fix-broken-sync-diff --track origin/fix-broken-sync-diff
  Switched to a new branch 'fix-broken-sync-diff'
  branch 'fix-broken-sync-diff' set up to track 'origin/fix-broken-sync-diff'.
  Resolved https://github.com/atugushev/pip-tools to commit 99133cb0ee267e465322a9e33784a22790cf0fe0
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Installing backend dependencies ... done
  Preparing metadata (pyproject.toml) ... done
Requirement already satisfied: build in /home/user/venv/lib/python3.11/site-packages (from pip-tools==3.2.1.dev1041) (0.10.0)
Requirement already satisfied: click>=8 in /home/user/venv/lib/python3.11/site-packages (from pip-tools==3.2.1.dev1041) (8.1.5)
Requirement already satisfied: pip>=22.2 in /home/user/venv/lib/python3.11/site-packages (from pip-tools==3.2.1.dev1041) (23.2)
Requirement already satisfied: setuptools in /home/user/venv/lib/python3.11/site-packages (from pip-tools==3.2.1.dev1041) (68.0.0)
Requirement already satisfied: wheel in /home/user/venv/lib/python3.11/site-packages (from pip-tools==3.2.1.dev1041) (0.40.0)
Requirement already satisfied: packaging>=19.0 in /home/user/venv/lib/python3.11/site-packages (from build->pip-tools==3.2.1.dev1041) (23.1)
Requirement already satisfied: pyproject_hooks in /home/user/venv/lib/python3.11/site-packages (from build->pip-tools==3.2.1.dev1041) (1.0.0)
Building wheels for collected packages: pip-tools
  Building wheel for pip-tools (pyproject.toml) ... done
  Created wheel for pip-tools: filename=pip_tools-3.2.1.dev1041-py3-none-any.whl size=57051 sha256=50e52c33b361356f14cb68263d7649321c970b597b5dad863d05d0f4d2f8bab6
  Stored in directory: /tmp/pip-ephem-wheel-cache-636qm7fx/wheels/e1/fc/e8/a3b48ef2401bf486e4152d892655942a3c2d906d34963f2485
Successfully built pip-tools
Installing collected packages: pip-tools
  Attempting uninstall: pip-tools
    Found existing installation: pip-tools 7.0.0
    Uninstalling pip-tools-7.0.0:
      Successfully uninstalled pip-tools-7.0.0
Successfully installed pip-tools-3.2.1.dev1041
-------------------------------------------------------------------------
(venv) user@40264cddaa4a:~/app/src$ make sync-requirements
cd ../ && pip-sync --pip-args "--no-deps" requirements/*.txt
Collecting pip-tools==7.0.0 (from -r /tmp/tmp8bgdgi03 (line 1))
  Using cached pip_tools-7.0.0-py3-none-any.whl (56 kB)
Installing collected packages: pip-tools
  Attempting uninstall: pip-tools
    Found existing installation: pip-tools 3.2.1.dev1041
    Uninstalling pip-tools-3.2.1.dev1041:
      Successfully uninstalled pip-tools-3.2.1.dev1041
Successfully installed pip-tools-7.0.0
(venv) user@40264cddaa4a:~/app/src$

It seems it is working as expected 👍 . Just the version of pip-tools in your tag looks strange: 3.2.1.dev...