chore: initialise repository and cargo project

.envrc

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+use flake

.gitignore

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+target/
+result
+.direnv/

Cargo.toml

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+[package]
+name = "aspiration"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+# Enable a small amount of optimization in debug mode
+[profile.dev]
+opt-level = 1
+
+# Enable high optimizations for dependencies (incl. Bevy), but not for our code:
+[profile.dev.package."*"]
+opt-level = 3
+
+[target.x86_64-unknown-linux-gnu]
+linker = "clang"
+rustflags = ["-C", "link-arg=-fuse-ld=mold"]
+
+[dependencies]
+bevy = { version = "0.12.0", features = [ "wayland", "dynamic_linking" ] }

README.md

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+<div align=center>
+
+# ❄️ nix-template-rust-nightly 🦀
+
+[![NixOS](https://img.shields.io/badge/Made_for-Rust-orange.svg?logo=rust&style=for-the-badge)](https://www.rust-lang.org/) [![NixOS](https://img.shields.io/badge/Flakes-Nix-informational.svg?logo=nixos&style=for-the-badge)](https://nixos.org) ![License](https://img.shields.io/github/license/mordragt/nix-templates?style=for-the-badge)
+
+Minimal **Rust** development template for **Nix**
+
+</div>
+
+## About
+
+This is a minimal template for Rust development on the nightly channel. 
+
+## Initialization
+
+See the parent README for further instructions, but you can initialize this template
+with the following command in your current directory.
+
+```bash
+nix flake init -t github:MordragT/nix-templates#rust-nightly
+```
+
+## Usage
+
+- `nix develop`: opens up a `bash` shell with the bare minimum Rust toolset (`cargo` & `rustc`) by default
+- `nix build` : builds the Rust project. Outputs the binary to `./result/bin/<name>`
+- `nix run`: runs the Rust program.
+
+
+## Reference
+
+1. [wiki/Flakes](https://nixos.wiki/wiki/Flakes)
+2. [Fenix](https://github.com/nix-community/fenix) - used for managing Rust toolchains (read the `makeRustPlatform` example)
+3. [rust-section of language frameworks](https://github.com/NixOS/nixpkgs/blob/master/doc/languages-frameworks/rust.section.md#cargo-features-cargo-features) - optional (use it for extending the template)

flake.lock

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+{
+  "nodes": {
+    "fenix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-analyzer-src": "rust-analyzer-src"
+      },
+      "locked": {
+        "lastModified": 1697178193,
+        "narHash": "sha256-LBDLUWlwSDPMA1Ui9wC9YcQEnJL0UP627RoUmtz4TTo=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "ff6c27356cbde594e598e388a32d79ef79cbe1b1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "fenix",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1697009197,
+        "narHash": "sha256-viVRhBTFT8fPJTb1N3brQIpFZnttmwo3JVKNuWRVc3s=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "01441e14af5e29c9d27ace398e6dd0b293e25a54",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "fenix": "fenix",
+        "nixpkgs": "nixpkgs",
+        "utils": "utils"
+      }
+    },
+    "rust-analyzer-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1697098808,
+        "narHash": "sha256-OfatUxSwuzYd17IDy9eNOedwioq0dX6mOuiTghKol3s=",
+        "owner": "rust-lang",
+        "repo": "rust-analyzer",
+        "rev": "84e1d273439413ab4ca1718db0b574dffba443ce",
+        "type": "github"
+      },
+      "original": {
+        "owner": "rust-lang",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1694529238,
+        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "Rust development template using fenix";
+
+  inputs = {
+    fenix = {
+      url = "github:nix-community/fenix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = {
+    self,
+    nixpkgs,
+    utils,
+    fenix,
+    ...
+  }:
+    utils.lib.eachDefaultSystem
+    (
+      system: let
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [fenix.overlays.default];
+        };
+        toolchain = pkgs.fenix.complete;
+      in rec
+      {
+        # Executed by `nix build`
+        packages.default =
+          (pkgs.makeRustPlatform {
+            # Use nightly rustc and cargo provided by fenix for building
+            inherit (toolchain) cargo rustc;
+          })
+          .buildRustPackage {
+            pname = "template";
+            version = "0.1.0";
+            src = ./.;
+            cargoLock.lockFile = ./Cargo.lock;
+
+            # For other makeRustPlatform features see:
+            # https://github.com/NixOS/nixpkgs/blob/master/doc/languages-frameworks/rust.section.md#cargo-features-cargo-features
+          };
+
+        # Executed by `nix run`
+        apps.default = utils.lib.mkApp {drv = packages.default;};
+
+        # Used by `nix develop`
+        devShells.default = pkgs.mkShell {
+          # Use nightly cargo & rustc provided by fenix. Add for packages for the dev shell here
+          buildInputs = with pkgs; [
+            (with toolchain; [
+              cargo rustc rust-src clippy rustfmt # rust components
+            ])
+            xorg.libX11 xorg.libXcursor xorg.libXi xorg.libXrandr # To use the x11 feature
+            libxkbcommon wayland # To use the wayland feature
+
+            mold
+            clang
+            pkg-config
+          ];
+
+          # Specify the rust-src path (many editors rely on this)
+          RUST_SRC_PATH = "${toolchain.rust-src}/lib/rustlib/src/rust/library";
+        };
+      }
+    );
+}

src/main.rs

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+fn main() {
+    println!("Hello, world!");
+}