diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..bab677c
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,72 @@
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+name: continuous-integration
+
+env:
+  NUSHELL_CARGO_PROFILE: ci
+  NU_LOG_LEVEL: DEBUG
+  CLIPPY_OPTIONS: "-D warnings"
+
+jobs:
+  fmt-clippy:
+    strategy:
+      fail-fast: true
+      matrix:
+        # Pinning to Ubuntu 20.04 because building on newer Ubuntu versions causes linux-gnu
+        # builds to link against a too-new-for-many-Linux-installs glibc version. Consider
+        # revisiting this when 20.04 is closer to EOL (April 2025)
+        platform: [macos-latest, ubuntu-20.04, windows-latest]
+        feature: [default]
+        include:
+          - feature: default
+            flags: ""
+
+    runs-on: ${{ matrix.platform }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Rust toolchain and cache
+        uses: actions-rust-lang/setup-rust-toolchain@v1.5.0
+        with:
+          rustflags: ""
+
+      - name: cargo fmt
+        run: cargo fmt --all -- --check
+
+      - name: Clippy
+        run: cargo clippy --workspace ${{ matrix.flags }} -- $CLIPPY_OPTIONS
+
+        # In tests we don't have to deny unwrap
+      - name: Clippy of tests
+        run: cargo clippy --tests --workspace ${{ matrix.flags }} -- -D warnings
+
+  tests:
+    strategy:
+      fail-fast: true
+      matrix:
+        platform: [macos-latest, ubuntu-20.04, windows-latest]
+        feature: [default]
+        include:
+          - feature: default
+            flags: ""
+        flags:
+          -  # default
+          - --all-features
+
+    runs-on: ${{ matrix.platform }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Rust toolchain and cache
+        uses: actions-rust-lang/setup-rust-toolchain@v1.5.0
+        with:
+          rustflags: ""
+
+      - name: Tests
+        run: cargo test ${{ matrix.flags }}
diff --git a/src/codegen.rs b/src/codegen.rs
index 31af3c5..cf2cdc8 100644
--- a/src/codegen.rs
+++ b/src/codegen.rs
@@ -724,7 +724,7 @@ impl Codegen {
                 for param in params {
                     output.extend_from_slice(b", ");
                     let variable_ty = self.compiler.get_variable(param.var_id).ty;
-                    self.codegen_typename(variable_ty, &inference_vars, output);
+                    self.codegen_typename(variable_ty, inference_vars, output);
                     output.push(b' ');
                     output.extend_from_slice(b"variable_");
                     output.extend_from_slice(param.var_id.0.to_string().as_bytes());
diff --git a/src/typechecker.rs b/src/typechecker.rs
index 188b439..9b02d94 100644
--- a/src/typechecker.rs
+++ b/src/typechecker.rs
@@ -31,6 +31,7 @@ pub struct TypedField {
     pub where_defined: NodeId,
 }
 
+#[allow(clippy::enum_variant_names)]
 #[derive(Debug, Clone, PartialEq)]
 pub enum Type {
     Unknown,
@@ -368,6 +369,7 @@ impl Typechecker {
         }
     }
 
+    #[allow(clippy::too_many_arguments)]
     pub fn typecheck_fun_predecl(
         &mut self,
         name: NodeId,
@@ -918,7 +920,7 @@ impl Typechecker {
 
                 let mut base_classes = vec![base_class];
                 if let Some(base_base_classes) = self.compiler.base_classes.get(&base_class) {
-                    base_classes.extend_from_slice(&base_base_classes);
+                    base_classes.extend_from_slice(base_base_classes);
                 }
 
                 self.compiler.base_classes.insert(type_id, base_classes);
@@ -1239,7 +1241,7 @@ impl Typechecker {
         &self,
         expected_type: TypeId,
         actual_type: TypeId,
-        local_inferences: &mut Vec<TypeId>,
+        local_inferences: &mut [TypeId],
     ) -> bool {
         let expected_type = self.compiler.resolve_type(expected_type, local_inferences);
         let expected_type = self.compiler.get_underlying_type_id(expected_type);
@@ -2523,12 +2525,12 @@ impl Typechecker {
                     let mut fields = fields.clone();
                     if let Some(base_classes) = self.compiler.base_classes.get(&type_id) {
                         for type_id in base_classes {
-                            match self.compiler.get_type(*type_id) {
-                                Type::Struct {
-                                    fields: base_fields,
-                                    ..
-                                } => fields.extend_from_slice(&base_fields),
-                                _ => {}
+                            if let Type::Struct {
+                                fields: base_fields,
+                                ..
+                            } = self.compiler.get_type(*type_id)
+                            {
+                                fields.extend_from_slice(base_fields)
                             }
                         }
                     }
diff --git a/tests/integration_tests.rs b/tests/integration_tests.rs
index ca92c1e..344b23a 100644
--- a/tests/integration_tests.rs
+++ b/tests/integration_tests.rs
@@ -81,7 +81,7 @@ fn test_example(test_name: &Path) -> TestResult {
 
     // Create it if it's not there
     let mut temp_dir = std::env::var("JUNE_TESTDIR")
-        .map(|dir| PathBuf::from(dir))
+        .map(PathBuf::from)
         .unwrap_or_else(|_| std::env::temp_dir());
     temp_dir.push("june_tests");