Drop support for Python 3.6.0

It has some subtle typing differences compared to 3.6.1, see e.g.
https://docs.python.org/3/library/typing.html#typing.NamedTuple

Also, we can't easily test it, it's unlikely to be in use anywhere
anyways, and various dependencies already dropped support for it or are
going to (e.g. PyQt 6).

See #4800

.flake8

@@ -50,7 +50,7 @@ ignore =
     A003,
     W503, W504
     FI15
-min-version = 3.6.0
+min-version = 3.6.1
 max-complexity = 12
 per-file-ignores =
     qutebrowser/api/hook.py : N801

README.asciidoc

@@ -74,7 +74,7 @@ Requirements
 
 The following software and libraries are required to run qutebrowser:
 
-* https://www.python.org/[Python] 3.6 or newer
+* https://www.python.org/[Python] 3.6.1 or newer
 * https://www.qt.io/[Qt] 5.12.0 or newer (5.12 LTS or 5.15 recommended)
   with the following modules:
   - QtCore / qtbase

doc/changelog.asciidoc

@@ -21,8 +21,8 @@ v2.0.0 (unreleased)
 Major changes
 ~~~~~~~~~~~~~
 
-- At least Python 3.6 is now required to run qutebrowser, support for Python
-  3.5 is dropped. Note that Python 3.5 is
+- At least Python 3.6.1 is now required to run qutebrowser, support for Python
+  3.5 (and 3.6.0) is dropped. Note that Python 3.5 is
   https://www.python.org/downloads/release/python-3510/[no longer supported
   upstream] since September 2020.
 - At least Qt/PyQt 5.12 is now required to run qutebrowser, support for 5.7 to

qutebrowser/misc/checkpyver.py

@@ -43,11 +43,11 @@ except ImportError:  # pragma: no cover
 # to stderr.
 def check_python_version():
     """Check if correct python version is run."""
-    if sys.hexversion < 0x03060000:
+    if sys.hexversion < 0x03060100:
         # We don't use .format() and print_function here just in case someone
         # still has < 2.6 installed.
         version_str = '.'.join(map(str, sys.version_info[:3]))
-        text = ("At least Python 3.6 is required to run qutebrowser, but " +
+        text = ("At least Python 3.6.1 is required to run qutebrowser, but " +
                 "it's running with " + version_str + ".\n")
         if (Tk and  # type: ignore[unreachable]
                 '--no-err-windows' not in sys.argv):  # pragma: no cover

qutebrowser/misc/earlyinit.py

@@ -19,7 +19,7 @@
 
 """Things which need to be done really early (e.g. before importing Qt).
 
-At this point we can be sure we have all python 3.6 features available.
+At this point we can be sure we have all python 3.6.1 features available.
 """
 
 try:

tests/end2end/test_invocations.py

@@ -325,7 +325,7 @@ def test_launching_with_old_python(python):
     except FileNotFoundError:
         pytest.skip(f"{python} not found")
     assert proc.returncode == 1
-    error = "At least Python 3.6 is required to run qutebrowser"
+    error = "At least Python 3.6.1 is required to run qutebrowser"
     assert proc.stderr.decode('ascii').startswith(error)