feat: Run cargo shear during CI (#3338)

Run cargo shear as part of the CI to ensure no unused dependencies

.github/workflows/rust-ci.yml

@@ -63,6 +63,24 @@ jobs:
       - name: cargo fmt
         run: cargo fmt -- --config imports_granularity=Item --check
 
+  cargo_shear:
+    name: cargo shear
+    runs-on: ubuntu-24.04
+    needs: changed
+    if: ${{ needs.changed.outputs.codex == 'true' || needs.changed.outputs.workflows == 'true' || github.event_name == 'push' }}
+    defaults:
+      run:
+        working-directory: codex-rs
+    steps:
+      - uses: actions/checkout@v5
+      - uses: dtolnay/rust-toolchain@1.89
+      - uses: taiki-e/install-action@v2
+        with:
+          tool: cargo-shear
+          version: 1.5.1
+      - name: cargo shear
+        run: cargo shear
+
   # --- CI to validate on different os/targets --------------------------------
   lint_build_test:
     name: ${{ matrix.runner }} - ${{ matrix.target }}${{ matrix.profile == 'release' && ' (release)' || '' }}
@@ -182,7 +200,7 @@ jobs:
   # --- Gatherer job that you mark as the ONLY required status -----------------
   results:
     name: CI results (required)
-    needs: [changed, general, lint_build_test]
+    needs: [changed, general, cargo_shear, lint_build_test]
     if: always()
     runs-on: ubuntu-24.04
     steps:
@@ -190,6 +208,7 @@ jobs:
         shell: bash
         run: |
           echo "general: ${{ needs.general.result }}"
+          echo "shear  : ${{ needs.cargo_shear.result }}"
           echo "matrix : ${{ needs.lint_build_test.result }}"
 
           # If nothing relevant changed (PR touching only root README, etc.),
@@ -201,4 +220,5 @@ jobs:
 
           # Otherwise require the jobs to have succeeded
           [[ '${{ needs.general.result }}' == 'success' ]] || { echo 'general failed'; exit 1; }
+          [[ '${{ needs.cargo_shear.result }}' == 'success' ]] || { echo 'cargo_shear failed'; exit 1; }
           [[ '${{ needs.lint_build_test.result }}' == 'success' ]] || { echo 'matrix failed'; exit 1; }

codex-rs/chatgpt/Cargo.toml

@@ -12,7 +12,6 @@ clap = { version = "4", features = ["derive"] }
 codex-common = { path = "../common", features = ["cli"] }
 codex-core = { path = "../core" }
 codex-protocol = { path = "../protocol" }
-reqwest = { version = "0.12", features = ["json", "stream"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 tokio = { version = "1", features = ["full"] }

codex-rs/core/Cargo.toml

@@ -26,14 +26,12 @@ eventsource-stream = "0.2.3"
 futures = "0.3"
 libc = "0.2.175"
 mcp-types = { path = "../mcp-types" }
-mime_guess = "2.0"
 os_info = "3.12.0"
 portable-pty = "0.9.0"
 rand = "0.9"
 regex-lite = "0.1.7"
 reqwest = { version = "0.12", features = ["json", "stream"] }
 serde = { version = "1", features = ["derive"] }
-serde_bytes = "0.11"
 serde_json = "1"
 sha1 = "0.10.6"
 shlex = "1.3.0"
@@ -56,7 +54,6 @@ tracing = { version = "0.1.41", features = ["log"] }
 tree-sitter = "0.25.9"
 tree-sitter-bash = "0.25.0"
 uuid = { version = "1", features = ["serde", "v4"] }
-whoami = "1.6.1"
 wildmatch = "2.4.0"
 
 
@@ -85,3 +82,6 @@ tempfile = "3"
 tokio-test = "0.4"
 walkdir = "2.5.0"
 wiremock = "0.6"
+
+[package.metadata.cargo-shear]
+ignored = ["openssl-sys"]

codex-rs/exec/Cargo.toml

@@ -25,7 +25,6 @@ codex-common = { path = "../common", features = [
     "sandbox_summary",
 ] }
 codex-core = { path = "../core" }
-codex-login = { path = "../login" }
 codex-ollama = { path = "../ollama" }
 codex-protocol = { path = "../protocol" }
 owo-colors = "4.2.0"

codex-rs/linux-sandbox/Cargo.toml

@@ -15,9 +15,7 @@ path = "src/lib.rs"
 workspace = true
 
 [target.'cfg(target_os = "linux")'.dependencies]
-anyhow = "1"
 clap = { version = "4", features = ["derive"] }
-codex-common = { path = "../common", features = ["cli"] }
 codex-core = { path = "../core" }
 landlock = "0.4.1"
 libc = "0.2.175"

codex-rs/login/Cargo.toml

@@ -17,7 +17,6 @@ serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 sha2 = "0.10"
 tempfile = "3"
-thiserror = "2.0.16"
 tiny_http = "0.12"
 tokio = { version = "1", features = [
     "io-std",
@@ -31,5 +30,4 @@ urlencoding = "2.1"
 webbrowser = "1.0"
 
 [dev-dependencies]
-pretty_assertions = "1.4.1"
 tempfile = "3"

codex-rs/mcp-server/Cargo.toml

@@ -26,7 +26,6 @@ schemars = "0.8.22"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 shlex = "1.3.0"
-strum_macros = "0.27.2"
 tokio = { version = "1", features = [
     "io-std",
     "macros",
@@ -44,5 +43,4 @@ assert_cmd = "2"
 mcp_test_support = { path = "tests/common" }
 pretty_assertions = "1.4.1"
 tempfile = "3"
-tokio-test = "0.4"
 wiremock = "0.6"

codex-rs/mcp-server/tests/common/Cargo.toml

@@ -9,20 +9,16 @@ path = "lib.rs"
 [dependencies]
 anyhow = "1"
 assert_cmd = "2"
-codex-core = { path = "../../../core" }
 codex-mcp-server = { path = "../.." }
 codex-protocol = { path = "../../../protocol" }
 mcp-types = { path = "../../../mcp-types" }
 pretty_assertions = "1.4.1"
 serde = { version = "1" }
 serde_json = "1"
-shlex = "1.3.0"
-tempfile = "3"
 tokio = { version = "1", features = [
     "io-std",
     "macros",
     "process",
     "rt-multi-thread",
 ] }
-uuid = { version = "1", features = ["serde", "v4"] }
 wiremock = "0.6"

codex-rs/ollama/Cargo.toml

@@ -24,9 +24,7 @@ tokio = { version = "1", features = [
     "rt-multi-thread",
     "signal",
 ] }
-toml = "0.9.5"
 tracing = { version = "0.1.41", features = ["log"] }
 wiremock = "0.6"
 
 [dev-dependencies]
-tempfile = "3"

codex-rs/protocol/Cargo.toml

@@ -17,7 +17,6 @@ icu_locale_core = "2.0.0"
 mcp-types = { path = "../mcp-types" }
 mime_guess = "2.0.5"
 serde = { version = "1", features = ["derive"] }
-serde_bytes = "0.11"
 serde_json = "1"
 serde_with = { version = "3.14.0", features = ["macros", "base64"] }
 strum = "0.27.2"
@@ -29,3 +28,7 @@ uuid = { version = "1", features = ["serde", "v4"] }
 
 [dev-dependencies]
 pretty_assertions = "1.4.1"
+
+[package.metadata.cargo-shear]
+# Required because the not imported as strum_macros in non-nightly builds.
+ignored = ["strum"]

codex-rs/tui/Cargo.toml

@@ -59,9 +59,7 @@ ratatui = { version = "0.29.0", features = [
     "unstable-rendered-line-info",
     "unstable-widget-ref",
 ] }
-ratatui-image = "8.0.0"
 regex-lite = "0.1"
-reqwest = { version = "0.12", features = ["json"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = { version = "1", features = ["preserve_order"] }
 shlex = "1.3.0"
@@ -81,12 +79,10 @@ tokio-stream = "0.1.17"
 tracing = { version = "0.1.41", features = ["log"] }
 tracing-appender = "0.2.3"
 tracing-subscriber = { version = "0.3.19", features = ["env-filter"] }
-tui-input = "0.14.0"
 tui-markdown = "0.3.3"
 unicode-segmentation = "1.12.0"
 unicode-width = "0.1"
 url = "2"
-uuid = "1"
 pathdiff = "0.2"
 
 [target.'cfg(unix)'.dependencies]