hello world

.gitignore

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+/target
+/result

Cargo.toml

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+[package]
+name = "cells"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+eframe = "0.28"

flake.lock

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+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1725001927,
+        "narHash": "sha256-eV+63gK0Mp7ygCR0Oy4yIYSNcum2VQwnZamHxYTNi+M=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "6e99f2a27d600612004fbd2c3282d614bfee6421",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "Cells";
+
+  inputs.nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-24.05";
+
+  outputs = { self, nixpkgs }:
+    let
+      pkgs = import nixpkgs { system = "x86_64-linux"; };
+      libraryPath = pkgs.lib.makeLibraryPath [ pkgs.wayland pkgs.libxkbcommon pkgs.libGL ];
+    in {
+      packages.x86_64-linux.default = pkgs.rustPlatform.buildRustPackage {
+        name = "cells";
+        cargoLock.lockFile = ./Cargo.lock;
+        src = pkgs.lib.cleanSource ./.;
+        nativeBuildInputs = [ pkgs.makeWrapper ];
+        postFixup = "wrapProgram $out/bin/cells --set LD_LIBRARY_PATH ${libraryPath}";
+      };
+      devShells.x86_64-linux.default = pkgs.mkShell {
+        name = "dev-shell-cells";
+        buildInputs = [
+          pkgs.cargo
+          pkgs.rustc
+        ];
+        shellHook = "export LD_LIBRARY_PATH=${libraryPath}";
+      };
+    };
+}

src/main.rs

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+use eframe::egui;
+
+fn main() -> eframe::Result {
+    let options = eframe::NativeOptions {
+        viewport: egui::ViewportBuilder::default().with_inner_size([320.0, 240.0]),
+        ..Default::default()
+    };
+
+    // Our application state:
+    let mut name = "Arthur".to_owned();
+    let mut age = 42;
+
+    eframe::run_simple_native("My egui App", options, move |ctx, _frame| {
+        egui::CentralPanel::default().show(ctx, |ui| {
+            ui.heading("My egui Application");
+            ui.horizontal(|ui| {
+                let name_label = ui.label("Your name: ");
+                ui.text_edit_singleline(&mut name)
+                    .labelled_by(name_label.id);
+            });
+            ui.add(egui::Slider::new(&mut age, 0..=120).text("age"));
+            if ui.button("Increment").clicked() {
+                age += 1;
+            }
+            ui.label(format!("Hello '{name}', age {age}"));
+        });
+    })
+}