Add GitHub CI and fix clippy warnings

.github/workflows/ci.yaml

@@ -0,0 +1,89 @@
+name: CI
+on:
+  pull_request:
+  push:
+
+permissions:
+  contents: read
+
+env:
+  RUST_BACKTRACE: full
+  RUSTDOCFLAGS: -Dwarnings
+  RUSTFLAGS: -Dwarnings
+
+jobs:
+  style:
+    name: Code style
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Rust stable
+        run: |
+          rustup update --no-self-update stable
+          rustup default stable
+
+      - name: Cache dependencies
+        uses: Swatinem/rust-cache@v2
+
+      - name: Rustfmt
+        run: cargo fmt -- --check
+
+      - name: Clippy
+        run: cargo clippy --workspace --all-targets -- -D clippy::dbg_macro -D clippy::todo
+
+      - name: Rustdoc
+        run: cargo doc --workspace
+
+  test:
+    strategy:
+      matrix:
+        rust: [stable]
+    name: Test ${{ matrix.rust }}
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Rust ${{ matrix.rust }}
+        run: |
+          rustup update --no-self-update ${{ matrix.rust }}
+          rustup default ${{ matrix.rust }}
+
+      - name: Cache Dependencies
+        uses: Swatinem/rust-cache@v2
+
+      - name: Build
+        run: cargo build --workspace --all-targets
+
+      - name: Test
+        run: cargo test --workspace --all-targets -- --include-ignored
+
+  nix-flake:
+    name: Flake package
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install nix
+        uses: cachix/install-nix-action@v26
+        with:
+          github_access_token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Cache nix store
+        uses: DeterminateSystems/magic-nix-cache-action@b46e247b898aa56e6d2d2e728dc6df6c84fdb738
+        with:
+          # I do NOT consent to share build cache between FlakeHub.
+          # This should NOT be the default.
+          use-flakehub: false
+
+      - name: Flake check
+        run: nix flake check --no-update-lock-file --show-trace
+
+      - name: Flake build
+        run: nix build --no-update-lock-file --show-trace --print-build-logs

Cargo.toml

@@ -7,6 +7,12 @@ members = [
 ]
 default-members = ["blahd"]
 
+[workspace.lints.clippy]
+dbg_macro = "warn"
+print_stderr = "warn"
+print_stdout = "warn"
+todo = "warn"
+
 [package]
 name = "blah"
 version = "0.0.0"
@@ -25,3 +31,6 @@ serde = { version = "1", features = ["derive"] }
 serde_jcs = "0.1"
 serde_json = "1"
 uuid = { version = "1", features = ["serde"] }
+
+[lints]
+workspace = true

blahctl/Cargo.toml

@@ -14,3 +14,7 @@ rusqlite = "0.32"
 tokio = { version = "1", features = ["rt", "macros"] }
 
 blah = { path = "..", features = ["rusqlite"] }
+
+[lints.clippy]
+dbg_macro = "warn"
+todo = "warn"

blahd/Cargo.toml

@@ -27,3 +27,6 @@ uuid = { version = "1", features = ["v4"] }
 blah = { path = "..", features = ["rusqlite"] }
 basic-toml = "0.1.9"
 serde-inline-default = "0.2.0"
+
+[lints]
+workspace = true

blahd/src/main.rs

@@ -356,7 +356,7 @@ async fn room_get_feed(
     ))
 }
 
-/// Ref: https://www.jsonfeed.org/version/1.1/
+/// Ref: <https://www.jsonfeed.org/version/1.1/>
 #[derive(Debug, Serialize)]
 #[serde(tag = "version", rename = "https://jsonfeed.org/version/1.1")]
 struct FeedRoom {