Speed up CI

.github/workflows/ci.yml

@@ -4,6 +4,11 @@ on:
     branches: [main]
   pull_request:
   workflow_dispatch:
+
+env:
+  CACHIX_AUTH_TOKEN: ${{ secrets.CACHIX_AUTH_TOKEN }}
+  CARGO_INCREMENTAL: 0
+
 jobs:
   ci:
     name: ${{ matrix.os }}
@@ -24,10 +29,20 @@ jobs:
           components: rustfmt, clippy
           profile: minimal
           override: true
-      - uses: cachix/install-nix-action@v15
+      - uses: cachix/install-nix-action@v16
         if: ${{ matrix.os != 'windows-latest' }}
         with:
-          nix_path: nixpkgs=channel:nixpkgs-unstable
+          nix_path: nixpkgs=channel:nixos-unstable
+      - uses: cachix/cachix-action@v10
+        if: ${{ matrix.os != 'windows-latest' && env.CACHIX_AUTH_TOKEN != '' }}
+        with:
+          authToken: ${{ env.CACHIX_AUTH_TOKEN }}
+          name: zoxide
+
+      - name: Setup cache
+        uses: Swatinem/rust-cache@v1
+        if:
+          ${{ matrix.os == 'windows-latest' }}
 
       - run: cargo xtask ci
         if: ${{ matrix.os == 'windows-latest' }}

.github/workflows/release.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
   workflow_dispatch:
 
+env:
+  CARGO_INCREMENTAL: 0
+
 jobs:
   release:
     name: ${{ matrix.target }}
@@ -58,6 +61,9 @@ jobs:
           override: true
           target: ${{ matrix.target }}
 
+      - name: Setup cache
+        uses: Swatinem/rust-cache@v1
+
       - name: Build binary
         uses: actions-rs/cargo@v1
         with:

Cargo.toml

@@ -29,7 +29,10 @@ ordered-float = "2.0.0"
 serde = { version = "1.0.116", features = ["derive"] }
 
 [target.'cfg(unix)'.dependencies]
-nix = { version = "0.24.1", default-features = false, features = ["fs", "user"] }
+nix = { version = "0.24.1", default-features = false, features = [
+    "fs",
+    "user",
+] }
 
 [build-dependencies]
 clap = { version = "3.1.0", features = ["derive"] }
@@ -46,7 +49,11 @@ tempfile = "3.1.0"
 default = []
 nix-dev = []
 
+[profile.dev]
+debug = 0
+
 [profile.release]
 codegen-units = 1
+debug = 0
 lto = true
 strip = true

Cross.toml

@@ -0,0 +1,2 @@
+[build.env]
+passthrough = ["CARGO_INCREMENTAL"]

shell.nix

@@ -38,5 +38,6 @@ in pkgs.mkShell {
     pkgs.libiconv
   ];
 
-  RUST_BACKTRACE = 1;
+  CARGO_INCREMENTAL = builtins.getEnv "CI" != "";
+  CARGO_TARGET_DIR = "target_nix";
 }

xtask/src/main.rs

@@ -54,8 +54,13 @@ impl CommandExt for &mut Command {
 }
 
 fn run_ci(nix_enabled: bool) -> Result<()> {
+    // Run cargo-clippy.
     let color: &[&str] = if is_ci() { &["--color=always"] } else { &[] };
-    Command::new("cargo").args(&["check", "--all-features"]).args(color)._run()?;
+    Command::new("cargo")
+        .args(&["clippy", "--all-features", "--all-targets"])
+        .args(color)
+        .args(&["--", "-Dwarnings"])
+        ._run()?;
 
     run_fmt(nix_enabled, true)?;
     run_lint(nix_enabled)?;
@@ -84,14 +89,6 @@ fn run_fmt(nix_enabled: bool, check: bool) -> Result<()> {
 }
 
 fn run_lint(nix_enabled: bool) -> Result<()> {
-    // Run cargo-clippy.
-    let color: &[&str] = if is_ci() { &["--color=always"] } else { &[] };
-    Command::new("cargo")
-        .args(&["clippy", "--all-features", "--all-targets"])
-        .args(color)
-        .args(&["--", "-Dwarnings"])
-        ._run()?;
-
     if nix_enabled {
         // Run cargo-audit.
         let color: &[&str] = if is_ci() { &["--color=always"] } else { &[] };
@@ -136,7 +133,6 @@ fn enable_nix() -> bool {
     }
     let nix_enabled = env::var_os("IN_NIX_SHELL").unwrap_or_default() == "pure";
     if nix_enabled {
-        env::set_var("CARGO_TARGET_DIR", "target_nix");
         return true;
     }
     let nix_detected = Command::new("nix-shell").arg("--version").status().map(|s| s.success()).unwrap_or(false);