pyright fixes for older python versions

Author: wolph

progressbar/bar.py

@@ -34,7 +34,7 @@
 # float also accepts integers and longs but we don't want an explicit union
 # due to type checking complexity
 NumberT = float
-ValueT: typing.TypeAlias = typing.Union[
+ValueT = typing.Union[
     NumberT, typing.Type[base.UnknownLength], None
 ]
 
@@ -977,7 +977,7 @@ def start(
         init: bool = True,
         *args: typing.Any,
         **kwargs: typing.Any,
-    ) -> typing.Self:
+    ) -> ProgressBar:
         """Starts measuring time, and prints the bar at 0%.
 
         It returns self so you can use it like this:

tox.ini

@@ -6,16 +6,18 @@ envlist =
     py311
     docs
     black
-    pyright
     ruff
 ; mypy
 ; codespell
 skip_missing_interpreters = True
 
 [testenv]
-deps = -r{toxinidir}/tests/requirements.txt
-commands = py.test --basetemp="{envtmpdir}" --confcutdir=.. {posargs}
-;changedir = tests
+deps =
+    -r{toxinidir}/tests/requirements.txt
+    pyright
+commands =
+    pyright
+    py.test --basetemp="{envtmpdir}" --confcutdir=.. {posargs}
 skip_install = true
 
 [testenv:mypy]
@@ -24,14 +26,6 @@ basepython = python3
 deps = mypy
 commands = mypy {toxinidir}/progressbar
 
-[testenv:pyright]
-changedir =
-basepython = python3
-deps =
-    pyright
-    python_utils
-commands = pyright {toxinidir}/progressbar
-
 [testenv:black]
 basepython = python3
 deps = black