new: templates: basic rust example

.gitignore

@@ -1 +1,2 @@
-
+templates/*/result*
+templates/*/flake.lock

flake.nix

@@ -18,5 +18,9 @@
         nixosModules = {
             bonfire = import ./nixosModules/bonfire.nix;
         };
+
+        templates = {
+            rust = { path = ./templates/rust; description = "Basic Rust template"; };
+        };
     };
 }

templates/rust/.gitignore

@@ -0,0 +1,2 @@
+/target
+result*

templates/rust/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "rust-example"
+version = "0.1.0"

templates/rust/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "rust-example"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

templates/rust/README.md

@@ -0,0 +1,8 @@
+# Basic Rust Example
+
+* Creating/updating `Cargo.lock`
+```shell
+touch Cargo.lock
+nix develop
+cargo check
+```

templates/rust/flake.nix

@@ -0,0 +1,52 @@
+{
+    description = "Basic rust template";
+
+    inputs = {
+        nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+        crane = { url = "github:ipetkov/crane"; inputs.nixpkgs.follows = "nixpkgs"; };
+    };
+
+    outputs = inputs @ { self, nixpkgs, crane, ... }:
+    let 
+        forAllSystems = nixpkgs.lib.genAttrs [ "x86_64-linux" ];
+        nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });
+    in {
+        packages = forAllSystems (system: {
+            my-crate = let
+                pkgs = nixpkgsFor.${system};
+                craneLib = crane.lib.${system};
+            in craneLib.buildPackage {
+                src = craneLib.cleanCargoSource (craneLib.path ./.);
+                strictDeps = true;
+
+                buildInputs = [];
+            };
+
+            default = self.packages.${system}.my-crate;
+        });
+
+        checks = forAllSystems (system: { 
+            inherit (self.packages.${system}.my-crate);
+
+            my-crate-fmt = let craneLib = crane.lib.${system}; in craneLib.cargoFmt { 
+                src = craneLib.cleanCargoSource (craneLib.path ./.);
+            };
+        });
+
+        apps = forAllSystems (system: {
+            default = {
+                type = "app";
+                program = "${self.packages.${system}.my-crate}/bin/rust-example"; 
+            };
+        });
+
+        devShells = forAllSystems (system: {
+            default = crane.lib.${system}.devShell {
+                checks = self.checks.${system};
+
+                packages = [];
+            };
+        });
+    };
+
+}

templates/rust/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, nix!");
+}