Add initial nightly build and refactor existing CI workflow

.cargo/config.toml

@@ -0,0 +1,2 @@
+[alias]
+xtask = "run --quiet --package xtask --"

.github/workflows/ci.yml

@@ -0,0 +1,33 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+      # temp
+      - ci-refactor
+  pull_request:
+  merge_group:
+
+permissions:
+  contents: read
+
+jobs:
+  checks:
+    name: Checks
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dtolnay/rust-toolchain@stable
+      - name: Run cargo fmt
+      run: rustup toolchain install nightly && rustup component add --toolchain nightly-x86_64-unknown-linux-gnu rustfmt && cargo +nightly fmt -- --check
+      - name: Run cargo clippy
+      run: cargo clippy -- -D warnings
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dtolnay/rust-toolchain@stable
+      - name: Get corelib
+        run: git clone https://github.com/starkware-libs/cairo
+      - name: Run cargo test
+        run: CORELIB_PATH="$(pwd)/cairo/corelib/src" cargo test

.github/workflows/nightly.yml

@@ -0,0 +1,25 @@
+name: Nightly
+
+on:
+  schedule:
+    - cron: "0 0 * * *"
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build nightly
+    runs-on: ubuntu-latest
+    steps:
+      - name: Upgrade Cairo to latest main commit
+        run: cargo xtask upgrade cairo --rev $(git ls-remote --refs "https://github.com/starkware-libs/cairo" main | awk '{print $1}')
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dtolnay/rust-toolchain@stable
+      - name: Get corelib
+        run: git clone https://github.com/starkware-libs/cairo
+      - name: Run cargo test
+        run: CORELIB_PATH="$(pwd)/cairo/corelib/src" cargo test

Cargo.toml

@@ -5,6 +5,7 @@ members = [
   "crates/cairo-lint-core",
   "crates/cairo-lint-dev",
   "crates/cairo-lint-test-utils",
+  "xtask"
 ]
 
 [workspace.package]

xtask/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "xtask"
+version = "1.0.0"
+edition.workspace = true
+publish = false
+
+[dependencies]
+anyhow.workspace = true
+clap.workspace = true
+cairo-toolchain-xtasks = "1"

xtask/src/main.rs

@@ -0,0 +1,33 @@
+use clap::Parser;
+
+macro_rules! command {
+  ($enum_name:ident ( $($module:ident,)+ )) => {
+      $(mod $module;)+
+
+      #[derive(::clap::Subcommand)]
+      #[allow(non_camel_case_types)]
+      enum $enum_name {
+          $($module(crate::$module::Args),)+
+      }
+
+      impl $enum_name {
+          fn main(self) -> ::anyhow::Result<()> {
+              match self {
+                  $(Self::$module(args) => crate::$module::main(args),)+
+              }
+          }
+      }
+  }
+}
+
+command!(Command(upgrade,));
+
+#[derive(Parser)]
+struct Args {
+    #[command(subcommand)]
+    command: Command,
+}
+
+fn main() {
+    let _ = Args::parse().command.main();
+}

xtask/src/upgrade.rs

@@ -0,0 +1 @@
+pub use cairo_toolchain_xtasks::upgrade::{main, Args};