Boilerplate for core library and CLI binary.

.devcontainer/Dockerfile

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+FROM mcr.microsoft.com/devcontainers/rust:1-1-bookworm
+
+# Install 'just' as root during the build process
+RUN curl --proto '=https' --tlsv1.2 -sSf https://just.systems/install.sh | bash -s -- --to /usr/local/bin

.devcontainer/devcontainer.json

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+{
+    "name": "Gingko Development",
+    "build": {
+        "dockerfile": "Dockerfile"
+    },
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "rust-lang.rust-analyzer",
+                "tamasfe.even-better-toml",
+                "vadimcn.vscode-lldb",
+                "mutuhun.just"
+            ]
+        }
+    },
+    "remoteUser": "vscode"
+}

.gitignore

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+/target

cli/Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "cli"
+version = "0.1.0"

cli/Cargo.toml

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+[package]
+name = "cli"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

cli/src/main.rs

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

core/Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "core"
+version = "0.1.0"

core/Cargo.toml

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+[package]
+name = "core"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

core/src/lib.rs

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+pub fn add(left: usize, right: usize) -> usize {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}

justfile

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+default:
+    @just --list --justfile {{justfile()}}
+
+build: build-core build-cli
+
+build-core:
+    cargo build --manifest-path "core/Cargo.toml"  --target-dir "target"
+
+build-cli: build-core
+    cargo build --manifest-path "cli/Cargo.toml" --target-dir "target"
+
+run:
+    cargo run --manifest-path "cli/Cargo.toml" --target-dir "target"