Since macOS Catalina, the root drive is read-only. The solution is to create a separate APFS volume and a “synthetic” /nix directory which points to it:
# Check if /nix exists, if not:
echo 'nix' | sudo tee -a /etc/synthetic.conf
# this will create a "synthetic" empty directory /nix
# REBOOT so macOS sees the synthetic directory
# After rebooting, create an APFS volume for Nix
| /* | |
| Photoresistor Part (Connection) | |
| http://nakkaya.com/images/post/photoresistor.png | |
| Connect the photoresistor one leg to pin 0, and pin to +5V | |
| Connect a resistor (around 10k is a good value, higher | |
| values gives higher readings) from pin 0 to GND. | |
| ---------------------------------------------------- |
| #import <RestKit/RestKit.h> | |
| #import "CoreData+MagicalRecord.h" | |
| // Use a class extension to expose access to MagicalRecord's private setter methods | |
| @interface NSManagedObjectContext () | |
| + (void)MR_setRootSavingContext:(NSManagedObjectContext *)context; | |
| + (void)MR_setDefaultContext:(NSManagedObjectContext *)moc; | |
| @end | |
| @implementation AppDelegate |
#Mac OS X
| // | |
| // NSObject+PropertyListing.h | |
| // PropertyFun | |
| // | |
| // Created by Andrew Sardone on 8/27/10. | |
| // | |
| #import <Foundation/Foundation.h> | |