Spyder Python 6.1.1

What's new in this version:

New features:
- Allow to set a custom Conda executable in Preferences > Main interpreter
- Add action to context menu of Editor tabs to close all files to the left
- Support viewing long bytes in the Variable Explorer
- Allow to create a project if the selected directory after opening a project is not yet one

Important fixes:
- Several fixes related to remote development features
- Several fixes related to Qt6 bindings (PySide6/PyQt6)
- Several fixes related to the Debugger
- Fix Pixi environments activation on Posix systems
- Performance and usability fixes related to multicursor support and linting markers
- Prevent Flake8 cmd windows from appearing when it is selected as linting provider
- Make user environment variables take precedence over system ones for kernels

API changes:
- Remove old API for plugins, which was deprecated since Spyder 6.0

Fixed:
- Error connecting to remote kernel with Spyder 6.1.0
- AttributeError when printing files with PyQt6
- Kernel fails to start on Windows with Conda 25.9 and Mamba 2.1+
- Error and warning markers flicker frequently in version 6.1.0 when editing files
- Unable to open large strings in the Variable Explorer in 6.1.0
- After enabling the Flake8 option, a large number of cmd.exe windows keep appearing
- [SpyderKernelApp] WARNING | GUI event loop or pylab initialization failed message in the console
- Input method is not located in the right position in editor in Spyder 6.1.0
- Right click on dock widget pane selector brings up an issue report
- AttributeError when closing last console and it's remote
- An error occurred while starting the kernel: No manifest file for your pixi environment was found
- Adding too many cursors at once can cause significant hang
- 'Run code while debugging' ignored by debugger
- Spyder hangs after running a file multiple times with a breakpoint() call
- The list of breakpoints in the debugger pane continues to grow whenever you edit the condition of the same conditional breakpoint
- Simplify workflow when opening/creating projects from folders
- Not able to run *.pyw files in Spyder 6
- PATH user environment variable is incorrectly transmitted to the IPython Console for macOS shortcuts
- Check when selecting a .json file to connect to a kernel that the file is actually valid and add a way to give feedback to the user in case the file is invalid
- Spyder 6.0 - warning is treated as an error when starting console
- Spyder 6: Code analysis truncates error source in long messages
- request: Close all to the left action
- Errors because Spyder can't detect conda when a Conda-based distro is installed in a non-standard location