Merge branch 'add-direnv'

Author: MarkusPettersson98

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -39,3 +39,4 @@
 *.bak
 android/.idea
 .vscode/
+.direnv/

BuildInstructions.md

@@ -67,6 +67,20 @@ sudo dnf install dbus-devel
 sudo dnf install rpm-build
 ```
 
+## Using nix devshell
+
+This is supported on Linux (x86_64) as well as macOS (x86_64 and aarch64).
+[Install nix](./android/docs/BuildInstructions.md#Build-using-nix-devshell) if you haven't already.
+
+   ```bash
+   nix develop
+   ```
+
+#### direnv
+
+Provided in the repository root is a [direnv](https://direnv.net/) for automatically sourcing the devshell.
+Allow it by executing `direnv allow .` (in `<repository>`) once.
+
 ### Cross-compiling for ARM64
 
 By default, the app will build for the host platform. It is also possible to cross-compile the app