Just-ify CI

.cargo/config.toml

@@ -0,0 +1,3 @@
+# Opt in to the v3 MSRV-aware resolver.
+[resolver]
+incompatible-rust-versions = "fallback"

.github/workflows/ci.yml

@@ -1,69 +1,70 @@
-name: Build & Test
+# A few guiding principles.
+# 
+# * Always use actions-rust-lang/setup-rust-toolchain for its built-in caching.
+# * Complexity lives in the justfile, this runner is as light as possible.
+
+name: CI
 
+# Run on direct commits to master, including merges, and any pull requests against master.
 on:
   push:
     branches:
       - master
   pull_request:
+    branches:
+      - master
 
 jobs:
-  build:
+  # Quick canary of code as well as potential issues with upcoming toolchains.
+  check:
     strategy:
       matrix:
-        platform: [ubuntu-latest, macos-latest, windows-latest]
         toolchain: [stable, beta, nightly]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: extractions/setup-just@v3
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: ${{ matrix.toolchain }}
+          components: clippy,rustfmt
+      - run: just check
+  # Build and test the code across platforms.
+  test:
+    strategy:
+      matrix:
+        platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
     steps:
-      - uses: actions/checkout@v3
-      - name: Update Toolchain
-        run: |
-          rustup default ${{ matrix.toolchain }}
-          rustup component add --toolchain ${{ matrix.toolchain }} rustfmt
-          rustup component add --toolchain ${{ matrix.toolchain }} clippy
-          rustup update ${{ matrix.toolchain }}
-      - name: Lint all targets
-        run: cargo clippy --all-targets
-      - name: Format
-        run: cargo fmt -- --check
-      - name: Build with defeault features
-        run: cargo build --verbose
-      - name: Check release build on Rust ${{ matrix.toolchain }}
-        run: cargo check --release --verbose --color always
-      - name: Unit test
-        run: cargo test --verbose --lib
-      - name: Doc test
-        run: cargo test --verbose --doc
-  # Check that library code can be compiled with MSRV (1.63.0).
+      - uses: actions/checkout@v4
+      - uses: extractions/setup-just@v3
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - run: just test unit
+  features:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: extractions/setup-just@v3
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - run: just test features
   msrv:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      # Modify build tools just for MSRV testing. This avoids us having
-      # to bump our MSRV just for tooling. Tooling doesn't effect consumers so not a risk.
-      - name: Prepare environment for MSRV toolchain
-        run: |
-          # Remove resolver = "3" line for MSRV compatibility. We use V3 to
-          # generate an MSRV-compliant lockfile, but this isn't necessary to
-          # check if library code is MSRV compliant. Any resolver can go
-          # and grab the versions specified in the committed lockfile.
-          #
-          # The V3 resolver is standard in rust 1.85.
-          sed -i '/resolver = "3"/d' Cargo.toml
-      - name: Install MSRV toolchain
-        run: |
-          rustup toolchain install 1.63.0
-          rustup default 1.63.0
-      - name: Build with MSRV compiler
-        run: cargo build --verbose
-  signet:
+      - uses: actions/checkout@v4
+      - uses: extractions/setup-just@v3
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - run: just test msrv
+  sync:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - name: Sync signet
-        run: cargo test --verbose signet_syncs
-  bitcoind:
+      - uses: actions/checkout@v4
+      - uses: extractions/setup-just@v3
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - run: just test sync
+  integration:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - name: Integration test
-        run: cargo test -- --test-threads 1 --skip signet_syncs --nocapture
+      - uses: actions/checkout@v4
+      - uses: extractions/setup-just@v3
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - run: just test integration

.gitignore

@@ -1,3 +1,4 @@
+Cargo.lock
 /target
 /data
 /light_client_data