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README.md

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+# Development environments
+
+Powered with [Nix ❄️ ](https://nixos.org/), [Nix Flakes](https://nixos.wiki/wiki/Flakes), and [direnv](https://direnv.net/). Only usefull if you have Nix installed.
+
+## Shells
+A few custom development shells are available. Use with
+
+### direnv
+Create a .envrc file with the following contents to use a generic `nix`-shell
+```text
+use flake git+https://git.tammena.me/megamanmalte/dev?ref=main#nix
+```
+*See below for other shell options.*
+
+### nix develop
+Simply run the following to enter a generic nix shell
+```shell
+nix develop git+https://git.tammena.me/megamanmalte/dev?ref=main#nix
+```
+*See below for other shell options.*
+
+## Templates
+
+### Rust 🦀
+Initialize a new [Rust](https://www.rust-lang.org/) project with either
+```shell
+nix flake new NEW_PROJECT_DIR -t git+https://git.tammena.me/megamanmalte/dev?ref=main#rust
+```
+to create a new directory NEW_PROJECT_DIR.
+Or run
+```shell
+nix flake init -t git+https://git.tammena.me/megamanmalte/dev?ref=main#rust
+```
+to create the template inside the current directory
+
+The layout is as follows
+```text
+  .
+ ├──  .envrc
+ │     To load the defined shell, in case you run direnv
+ ├──  .gitignore
+ ├──  Cargo.lock
+ ├──  Cargo.toml
+ ├──  flake.lock
+ ├──  flake.nix
+ │     Heart of the repo, defines a development shell and a package, try `nix flake show`
+ ├──  nix
+ │  └──  packages
+ │     └──  change-my-name.nix
+ │           The package definitions, try `nix run`, it will build this package
+ └──  src
+    │  YOUR future code lives here
+    └──  main.rs
+```
+
+After running either of the above commands, you will probably want to rename your project
+```shell
+rename YOUR_NEW_COOL_PROJECT_NAME
+```
+
+## Output Tree
+`nix flake show`:
+```text
+dev
+├───devShells
+│   └───x86_64-linux
+│       ├───beste-schule: development environment 'beste.schule'
+│       ├───markdown: development environment 'generic-markdown'
+│       ├───nix: development environment 'generic-nix'
+│       ├───node: development environment 'generic-node'
+│       ├───nodeIonic: development environment 'generic-node-+-ionic'
+│       ├───nodePhp: development environment 'generic-node-+-php'
+│       ├───php: development environment 'generic-php'
+│       └───python: development environment 'generic-python'
+├───hydraJobs [omitted]
+├───packages
+│   └───x86_64-linux
+│       └───mdpls: package 'mdpls-30761508593d85b5743ae39c4209947740eec92d'
+└───templates
+    └───rust: template: Simple Rust + Nix template
+```