From 0d04061a808f5d5130860027b387867dba1f1aee Mon Sep 17 00:00:00 2001
From: Bruno BELANYI <bruno@belanyi.fr>
Date: Tue, 8 Oct 2019 15:31:26 +0200
Subject: [PATCH] [ADD] Flake8 configuration file

Using 'line-length=80' and flake8-bugbear's B950 warning, I respect
black's formatting of 88 columns max.

The T4 category is related to mypy lints, using the 'flake8-mypy`
plugin.

The max complexity is supposed to make you write shorter functions with
less complexity, using the cyclomatic complexity heuristic.

This file is almost directly taken from black's own flake8
configuration, because I'm using it as a linter and I mostly agreed with
its settings.
---
 flake8/.config/flake8 | 22 ++++++++++++++++++++++
 install.sh            |  1 +
 2 files changed, 23 insertions(+)
 create mode 100644 flake8/.config/flake8

diff --git a/flake8/.config/flake8 b/flake8/.config/flake8
new file mode 100644
index 0000000..97ffe1c
--- /dev/null
+++ b/flake8/.config/flake8
@@ -0,0 +1,22 @@
+[flake8]
+ignore =
+    # Whitespace before a ':' in slices
+    E203,
+    # Line over 80 columns
+    E501,
+    # Line break before a binary operator
+    W503
+
+# Up-to 88 thanks to B950 violation
+max-line-length = 80
+
+# Cyclomatic complexity for functions
+max-complexity = 18
+
+select =
+    # Built-in violations (complexity, whitespace, and others)
+    C,E,F,W,
+    # Violations from flake8-mypy
+    T4,
+    # Violations from flake8-bugbear, with opinionated warnings
+    B,B9
diff --git a/install.sh b/install.sh
index cd9b2c1..00f0155 100755
--- a/install.sh
+++ b/install.sh
@@ -5,6 +5,7 @@ stow -t ~ X
 stow -t ~ bash
 stow -t ~ dunst
 stow -t ~ emacs
+stow -t ~ flake8
 stow -t ~ git
 stow -t ~ i3
 stow -t ~ i3blocks