--skip in combination with --gitignore outputs git errors

[petrem]

To reproduce:

~/tmp$ python3 -m venv venv
~/tmp$ source venv/bin/activate
(venv) ~/tmp$ pip install isort==5.2.2
Collecting isort==5.2.2
  Using cached isort-5.2.2-py3-none-any.whl (90 kB)
Installing collected packages: isort
Successfully installed isort-5.2.2
(venv) ~/tmp$ mkdir isort_test
(venv) ~/tmp$ cd isort_test/
(venv) ~/tmp/isort_test$ git init
Initialized empty Git repository in /Users/peter/tmp/isort_test/.git/
(venv) ~/tmp/isort_test$ isort --check --skip foo.py --gitignore .
fatal: this operation must be run in a work tree
fatal: this operation must be run in a work tree
fatal: this operation must be run in a work tree
fatal: this operation must be run in a work tree
fatal: this operation must be run in a work tree
fatal: this operation must be run in a work tree
fatal: this operation must be run in a work tree

Note that adding a .gitignore or the foo.py file does not silence the errors, however isort --check --skip foo.py --skip .git --gitignore . does.

[timothycrosley]

Thanks for reporting! This is fixed in develop and will make its way out in the 5.3.0 release. In the meantime you can also fix it by adding a --skip .git to your command.

Thanks!

~Timothy