feat(aiken-new): output a github action

- bonus: include git short sha in version

closes #515

crates/aiken/Cargo.toml

@@ -8,10 +8,11 @@ homepage = "https://github.com/aiken-lang/aiken"
 license = "Apache-2.0"
 authors = ["Lucas Rosa <x@rvcas.dev>", "Kasey White <kwhitemsg@gmail.com>", "KtorZ <matthias.benkort@gmail.com>"]
 rust-version = "1.66.1"
+build = "build.rs"
 
 [dependencies]
 anyhow = "1.0.69"
-clap = { version = "4.1.8", features = ["derive", "wrap_help", "unicode"] }
+clap = { version = "4.1.8", features = ["derive", "wrap_help", "unicode", "string"] }
 hex = "0.4.3"
 ignore = "0.4.20"
 indoc = "2.0"
@@ -30,3 +31,6 @@ aiken-lang = { path = "../aiken-lang", version = "1.0.6-alpha" }
 aiken-lsp = { path = "../aiken-lsp", version = "1.0.6-alpha" }
 aiken-project = { path = '../aiken-project', version = "1.0.6-alpha" }
 uplc = { path = '../uplc', version = "1.0.6-alpha" }
+
+[build-dependencies]
+built = { version = "0.6.0", features = ["git2"] }

crates/aiken/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    built::write_built_file().expect("Failed to acquire build-time information");
+}

crates/aiken/src/cmd/new.rs

@@ -11,6 +11,8 @@ use std::{
     str::FromStr,
 };
 
+use crate::built_info;
+
 #[derive(clap::Args)]
 /// Create a new Aiken project
 pub struct Args {
@@ -49,6 +51,8 @@ fn create_project(args: Args, package_name: &PackageName) -> miette::Result<()>
         .save(&root)
         .into_diagnostic()?;
 
+    create_github_action(&root)?;
+
     gitignore(&root)?;
 
     Ok(())
@@ -82,16 +86,18 @@ fn print_success_message(package_name: &PackageName) {
 }
 
 fn create_lib_folder(root: &Path, package_name: &PackageName) -> miette::Result<()> {
-    let lib = root.join("lib");
-    fs::create_dir_all(&lib).into_diagnostic()?;
-    let nested_path = lib.join(&package_name.repo);
+    let nested_path = root.join("lib").join(&package_name.repo);
+
     fs::create_dir_all(nested_path).into_diagnostic()?;
+
     Ok(())
 }
 
 fn create_validators_folder(root: &Path) -> miette::Result<()> {
     let validators = root.join("validators");
+
     fs::create_dir_all(validators).into_diagnostic()?;
+
     Ok(())
 }
 
@@ -114,13 +120,6 @@ fn readme(root: &Path, project_name: &str) -> miette::Result<()> {
                 }}
                 ```
 
-                Validators are named after their purpose, so one of:
-
-                - `spent`
-                - `mint`
-                - `withdraw`
-                - `publish`
-
                 ## Building
 
                 ```sh
@@ -168,6 +167,44 @@ fn readme(root: &Path, project_name: &str) -> miette::Result<()> {
     ).into_diagnostic()
 }
 
+fn create_github_action(root: &Path) -> miette::Result<()> {
+    let workflows = root.join(".github").join("workflows");
+
+    fs::create_dir_all(&workflows).into_diagnostic()?;
+
+    fs::write(
+        workflows.join("tests.yml"),
+        formatdoc! {
+            r#"
+            name: Tests
+
+            on:
+              push:
+                branches: ["main"]
+              pull_request:
+
+            jobs:
+              build:
+                runs-on: ubuntu-latest
+                steps:
+                  - uses: actions/checkout@v3
+
+                  - uses: aiken-lang/setup-aiken@v0.1.0
+                    with:
+                      version: v{version}
+
+                  - run: aiken fmt --check
+                  - run: aiken check
+                  - run: aiken build
+            "#,
+            version = built_info::PKG_VERSION,
+        },
+    )
+    .into_diagnostic()?;
+
+    Ok(())
+}
+
 fn gitignore(root: &Path) -> miette::Result<()> {
     let gitignore_path = root.join(".gitignore");
 

crates/aiken/src/lib.rs

@@ -9,6 +9,10 @@ use uplc::machine::cost_model::ExBudget;
 
 pub mod cmd;
 
+pub mod built_info {
+    include!(concat!(env!("OUT_DIR"), "/built.rs"));
+}
+
 pub fn with_project<A>(directory: Option<PathBuf>, mut action: A) -> miette::Result<()>
 where
     A: FnMut(&mut Project<Terminal>) -> Result<(), Vec<aiken_project::error::Error>>,

crates/aiken/src/main.rs

@@ -1,14 +1,17 @@
-use aiken::cmd::{
-    blueprint::{self, address},
-    build, check, docs, fmt, lsp, new,
-    packages::{self, add},
-    tx, uplc,
+use aiken::{
+    built_info,
+    cmd::{
+        blueprint::{self, address},
+        build, check, docs, fmt, lsp, new,
+        packages::{self, add},
+        tx, uplc,
+    },
 };
 use clap::Parser;
 
 /// Aiken: a smart-contract language and toolchain for Cardano
 #[derive(Parser)]
-#[clap(version, about, long_about = None)]
+#[clap(version = version(), about, long_about = None)]
 #[clap(propagate_version = true)]
 pub enum Cmd {
     New(new::Args),
@@ -58,3 +61,11 @@ fn main() -> miette::Result<()> {
         Cmd::Uplc(sub_cmd) => uplc::exec(sub_cmd),
     }
 }
+
+fn version() -> String {
+    format!(
+        "v{} {}",
+        built_info::PKG_VERSION,
+        built_info::GIT_COMMIT_HASH_SHORT.unwrap()
+    )
+}