get usage from readme

README.md

@@ -0,0 +1 @@
+monolens/README.md

monolens/README.md

@@ -0,0 +1,45 @@
+# monolens
+
+<!-- description begin -->
+View part of your screen in monochrome colors or in simulated protanopia, deuteranopia, or tritanopia.
+<!-- description end -->
+
+[<img src="https://img.shields.io/pypi/v/monolens.svg">](https://pypi.org/project/monolens)
+
+Watch the demo on YouTube.
+
+[<img src="https://img.youtube.com/vi/f8FRBlSoqWQ/0.jpg">](https://youtu.be/f8FRBlSoqWQ)
+
+Install with `pip install monolens` and then run `monolens` in a terminal or do it in one
+command with or `pipx run monolens`.
+
+# Usage
+
+<!-- usage begin -->
+- Drag the lens around by holding a Mouse button down inside the window
+- To quit, press Escape, Q, or double click on the lens
+- Resize the lens by pressing up, down, left, right
+- Press Tab to switch between monochrome view and simulated protanopia, deuteranopia, tritanopia
+- Press I to switch view label on/off
+- To move the lens to another screen, press M
+
+On OSX, you need to give Monolens permission to make screenshots, which is safe.
+<!-- usage end -->
+
+# Known limitations
+
+- The app is tested on OSX and Linux. It may flicker when you move the lens (less so on
+  OSX). If you know how to fix this, please help. :)
+- Pulling the lens to another screen is currently not supported. Press S to switch screens
+  instead.
+- The lens actually uses a static screenshot which is updated as you move the lens around.
+  This trick is necessary, because an app cannot read the pixels under its own window.
+  Because of this, the pixels under the app are only updated when you move the lens away
+  first and then back.
+- On OSX, an ordinary app is not allowed to read pixels outside of its window for security
+  reasons, which is why this app needs special permissions. Doing this is safe; Monolens
+  contains no networking code and will neither store nor send your pixels anywhere.
+
+# Future plans
+
+- Support gestures to rescale the lens (pinch etc)

monolens/__init__.py

@@ -9,6 +9,11 @@ def main():
     import signal
     import re
 
+    if sys.version_info < (3, 9):
+        import importlib_resources
+    else:
+        import importlib.resources as importlib_resources
+
     QtCore.QCoreApplication.setOrganizationName("Monolens")
     QtCore.QCoreApplication.setApplicationName("Monolens")
 
@@ -20,7 +25,8 @@ def main():
     if "--reset" in app.arguments()[1:]:
         settings.clear()
 
-    with open("README.md") as f:
+    pkg = importlib_resources.files("monolens")
+    with open(pkg / "README.md") as f:
         tx = f.read()
         tag = "<!-- {0} begin -->\n(.+?)\n<!-- {0} end -->"
         m = re.search(tag.format("description"), tx, re.DOTALL)

setup.cfg

@@ -4,6 +4,7 @@ version = attr: monolens._version.version
 author = Hans Dembinski
 author_email = hans.dembinski@gmail.com
 description = View part of your screen in monochrome colors or in simulated protanopia, deuteranopia, or tritanopia
+license = MIT
 license_file = LICENSE
 long_description = file: README.md
 long_description_content_type = text/markdown
@@ -22,13 +23,15 @@ install_requires =
     pyside6
     numpy
     numba
+    importlib_resources;python_version<'3.9'
 include_package_data = true
-package_data =
-    monolens = README.md
 
 [options.entry_points]
 console_scripts =
     monolens = monolens:main
 
+[options.package_data]
+* = README.md
+
 [flake8]
 max-line-length = 90