Remove flake8 and isort in favor of Ruff

In conda#490, Ruff was added to try it out. Ruff could theoretically replace
isort and flake8. This commit removes them and removes compatibility
hacks in case we decide we do want to drop isort and flake8.

.pre-commit-config.yaml

@@ -24,18 +24,6 @@ repos:
   - id: ruff
     args: ["--fix"]
 
-# Ruff should catch (and mostly fix) everything that flake8 and isort do; if
-# either of these checks fails, can Ruff's config be updated to catch the same?
-- repo: https://github.com/pycqa/flake8
-  rev: 6.1.0
-  hooks:
-  - id: flake8
-- repo: https://github.com/pycqa/isort
-  rev: 5.12.0
-  hooks:
-  - id: isort
-    args: ["--profile", "black", "--filter-files"]
-
 - repo: https://github.com/pre-commit/mirrors-mypy
   rev: v1.5.1
   hooks:

conda_lock/lockfile/v2prelim/models.py

@@ -1,6 +1,3 @@
-# isort: skip_file
-# TODO: Remove the isort skip comment above if/when isort is no longer used. This skip
-# exists because isort and ruff disagree about how to sort the imports in this file.
 from collections import defaultdict
 from typing import ClassVar, Dict, List, Optional
 
@@ -10,10 +7,12 @@
     GitMeta,
     HashModel,
     InputMeta,
+    LockMeta,
+    MetadataOption,
+    TimeMeta,
 )
 from conda_lock.lockfile.v1.models import LockedDependency as LockedDependencyV1
 from conda_lock.lockfile.v1.models import Lockfile as LockfileV1
-from conda_lock.lockfile.v1.models import LockMeta, MetadataOption, TimeMeta
 from conda_lock.models import StrictModel
 
 

pyproject.toml

@@ -108,18 +108,6 @@ exclude = [
     "tests",
 ]
 
-[tool.isort]
-# NOTE: Can ruff replace isort? See `tool.ruff.isort`, these two configs should
-# be kept in sync until we pick one.
-atomic = true
-force_grid_wrap = 0
-include_trailing_comma = true
-lines_after_imports = 2
-lines_between_types = 1
-multi_line_output = 3
-use_parentheses = true
-known_first_party = "attr"
-
 [tool.pytest.ini_options]
 addopts = "-vrsx -n auto"
 flake8-max-line-length = 105
@@ -199,8 +187,6 @@ select = [
 max-complexity = 18
 
 [tool.ruff.isort]
-# NOTE: Can ruff replace isort? See `tool.isort`, these two configs should be
-# kept in sync until we pick one.
 lines-after-imports = 2
 lines-between-types = 1
 known-first-party = ["attr"]