ci: use nix devshell

.github/workflows/ci.yml

@@ -35,15 +35,16 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Install Nix
+        uses: cachix/install-nix-action@v27
+
       - name: Install Rust (${{ matrix.toolchain.name }})
         uses: actions-rust-lang/[email protected]
         with:
           toolchain: ${{ matrix.toolchain.version }}
 
-      - name: Install just, nextest
-        uses: taiki-e/[email protected]
-        with:
-          tool: just,nextest
+      - name: Enter Nix devshell
+        uses: nicknovitski/[email protected]
 
       - name: workaround MSRV issues
         if: matrix.toolchain.name == 'msrv'

.github/workflows/coverage.yml

@@ -22,10 +22,13 @@ jobs:
         with:
           components: llvm-tools-preview
 
-      - name: Install just & cargo-llvm-cov
+      - name: Enter Nix devshell
+        uses: nicknovitski/[email protected]
+
+      - name: Install cargo-llvm-cov
         uses: taiki-e/[email protected]
         with:
-          tool: just,cargo-llvm-cov
+          tool: cargo-llvm-cov
 
       - name: Generate code coverage
         run: just test-coverage-codecov

.github/workflows/lint.yml

@@ -22,15 +22,16 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Install Nix
+        uses: cachix/install-nix-action@v27
+
       - name: Install Rust
         uses: actions-rust-lang/[email protected]
         with:
           components: clippy
 
-      - name: Install just & cargo-hack
-        uses: taiki-e/[email protected]
-        with:
-          tool: just,cargo-hack
+      - name: Enter Nix devshell
+        uses: nicknovitski/[email protected]
 
       - name: Clippy
         run: just clippy

.gitignore

@@ -2,6 +2,9 @@
 /target/
 Cargo.lock
 
+# x52 toolchain
+/.toolchain/
+
 # direnv
 /.direnv/
 

flake.nix

@@ -1,27 +1,51 @@
 {
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    x52 = {
+      url = "github:x52dev/nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.flake-parts.follows = "flake-parts";
+    };
   };
 
-  outputs = inputs@{ flake-parts, ... }:
+  outputs = inputs @ { flake-parts, x52, ... }:
     flake-parts.lib.mkFlake { inherit inputs; } {
       systems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
-      perSystem = { pkgs, config, inputs', system, lib, ... }: {
-        formatter = pkgs.nixpkgs-fmt;
+      perSystem = { pkgs, config, inputs', system, lib, ... }:
+        let
+          x52just = inputs'.x52.packages.x52-just;
+        in
+        {
+          formatter = pkgs.nixpkgs-fmt;
+
+          devShells.default = pkgs.mkShell {
+            buildInputs = [ x52just ];
+
+            packages = [
+              # scripting
+              pkgs.just
+
+              # cargo plugins
+              pkgs.cargo-hack
+              pkgs.cargo-nextest
+
+              # formatters
+              config.formatter
+              pkgs.nodePackages.prettier
+              pkgs.taplo
+            ] ++ lib.optional pkgs.stdenv.isDarwin [
+              pkgs.pkgsBuildHost.libiconv
+              pkgs.pkgsBuildHost.darwin.apple_sdk.frameworks.Security
+              pkgs.pkgsBuildHost.darwin.apple_sdk.frameworks.CoreFoundation
+              pkgs.pkgsBuildHost.darwin.apple_sdk.frameworks.SystemConfiguration
+            ];
 
-        devShells.default = pkgs.mkShell {
-          packages = [
-            config.formatter
-            pkgs.nodePackages.prettier
-            pkgs.taplo
-            pkgs.just
-          ] ++ lib.optional pkgs.stdenv.isDarwin [
-            pkgs.pkgsBuildHost.libiconv
-            pkgs.pkgsBuildHost.darwin.apple_sdk.frameworks.Security
-            pkgs.pkgsBuildHost.darwin.apple_sdk.frameworks.CoreFoundation
-            pkgs.pkgsBuildHost.darwin.apple_sdk.frameworks.SystemConfiguration
-          ];
+            shellHook = ''
+              mkdir -p .toolchain
+              cp ${x52just}/*.just .toolchain/
+            '';
+          };
         };
-      };
     };
 }

justfile

@@ -1,19 +1,22 @@
+import '.toolchain/rust.just'
+
 _list:
     @just --list
 
+# Format project
+fmt:
+    just --unstable --fmt
+    nixpkgs-fmt .
+    fd --hidden --type=file --extension=md --extension=yml --exec-batch prettier --write
+    fd --hidden --extension=toml --exec-batch taplo format
+    cargo +nightly fmt
+
 # Lint workspace with Clippy
 clippy:
     cargo clippy --workspace --no-default-features
     cargo clippy --workspace --no-default-features --all-features
     cargo hack --feature-powerset --depth=3 clippy --workspace
 
-msrv := ```
-    cargo metadata --format-version=1 \
-    | jq -r 'first(.packages[] | select(.source == null and .rust_version)) | .rust_version' \
-    | sed -E 's/^1\.([0-9]{2})$/1\.\1\.0/'
-```
-msrv_rustup := "+" + msrv
-
 # Downgrade dev-dependencies necessary to run MSRV checks/tests.
 [private]
 downgrade-msrv:
@@ -58,13 +61,7 @@ doc-watch:
 # Check project
 check:
     just --unstable --fmt --check
-    prettier --check $(fd --type=file --hidden --extension=md --extension=yml)
-    taplo lint $(fd --hidden --extension=toml)
+    fd --hidden --type=file --extension=md --extension=yml --exec-batch prettier --check
+    fd --hidden --extension=toml --exec-batch taplo format --check
+    fd --hidden --extension=toml --exec-batch taplo lint
     cargo +nightly fmt -- --check
-
-# Format project
-fmt:
-    just --unstable --fmt
-    prettier --write $(fd --type=file --hidden --extension=md --extension=yml)
-    taplo format $(fd --hidden --extension=toml)
-    cargo +nightly fmt