nixify, bump versions

.envrc

@@ -0,0 +1 @@
+use flake .

.github/workflows/ci.yml

@@ -1,75 +1,72 @@
-on: push
-name: CI
+name: Check and build the library using Nix
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - "v*.*.*"
+  pull_request:
+    branches:
+      - main
+
 jobs:
-  lint:
-    name: Lint
+  check:
+    name: Check/Lint
     runs-on: ubuntu-latest
-    env:
-      RUSTFLAGS: -D warnings
-      CARGO_TERM_COLOR: always
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          # We need nightly for fmt
-          toolchain: nightly
-          override: true
-          components: rustfmt, clippy
-      - uses: Swatinem/rust-cache@v1
-      - name: Lint (clippy)
-        uses: actions-rs/cargo@v1
+      - name: git checkout
+        uses: actions/checkout@v3
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@main
+      - uses: DeterminateSystems/magic-nix-cache-action@main
+      - name: Check Nixpkgs inputs
+        uses: DeterminateSystems/flake-checker-action@main
         with:
-          command: clippy
-          args: --all-targets --all-features
-      - name: Lint (rustfmt)
-        uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --all --check
+          fail-mode: true
+
+      # Nix-specific logic begins here
+      - name: Check Rust formatting
+        run: |
+          nix develop --command cargo fmt --all --check
+      - name: Check Clippy lints
+        run: |
+          nix develop --command cargo clippy --all-targets
+      - name: Check spelling
+        run: |
+          nix develop --command \
+            codespell \
+              --skip target,.git \
+              --ignore-words-list crate
 
-  build:
-    name: Build and test
-    # We don't need to build on windows, do we?
+  test_and_build:
+    name: Test and build library
+    needs: check
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        rust-version: [stable, 1.57, nightly]
-      fail-fast: false
-    env:
-      RUSTFLAGS: -D warnings
-      CARGO_TERM_COLOR: always
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: ${{ matrix.rust-version }}
-          override: true
-          components: llvm-tools-preview
-      - uses: Swatinem/rust-cache@v1
-      - name: Build all targets with all features
-        uses: actions-rs/cargo@v1
-        with:
-          command: build
-          args: --all-targets --all-features
-      - name: Doctests
-        uses: actions-rs/cargo@v1
-        with:
-          command: test
-          args: --doc --all-features
-      - name: Install latest nextest release
-        uses: taiki-e/install-action@nextest
-      - name: Test with latest nextest release
-        uses: actions-rs/cargo@v1
+      - name: git checkout
+        uses: actions/checkout@v3
+      - name: Install Nix
+        uses: DeterminateSystems/nix-installer-action@main
+      - uses: DeterminateSystems/magic-nix-cache-action@main
+      - name: Set up Rust cache
+        uses: actions/cache@v3
         with:
-          command: nextest
-          args: run --all-features
-      - name: Install cargo-llvm-cov
-        uses: taiki-e/install-action@cargo-llvm-cov
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target/
+          key: sigproc_filterbank-${{ hashFiles('**/Cargo.lock') }}
+      - name: Test library
+        run: |
+          nix develop --command cargo test
+      - name: Build library
+        run: |
+          nix develop --command cargo build
       - name: Generate code coverage
-        if: startsWith(matrix.rust-version, 'stable')
-        run: cargo llvm-cov nextest --all-features --workspace --lcov --output-path lcov.info
+        run: nix develop --command cargo llvm-cov --workspace --lcov --output-path lcov.info
       - name: Upload coverage to Codecov
-        if: startsWith(matrix.rust-version, 'stable')
         uses: codecov/codecov-action@v3
         with:
           files: lcov.info

.gitignore

@@ -1,2 +1,3 @@
 /target
 /Cargo.lock
+.direnv

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "sigproc_filterbank"
-version = "0.3.0"
+version = "0.3.1"
 edition = "2021"
 rust-version = "1.57.0"
 license = "Apache-2.0 OR MIT"
@@ -9,10 +9,9 @@ description = "A parser and serializer for SIGPROC pulsar filterbank files"
 homepage = "https://github.com/kiranshila/sigproc_filterbank"
 readme = "README.md"
 keywords = ["astronomy", "parser", "pulsars"]
-categories = ["encoding","parser-implementations"]
-
+categories = ["encoding", "parser-implementations"]
 
 [dependencies]
-nom = "7.1"
-thiserror = "1.0"
+nom = "7"
+thiserror = "1"
 ux = "0.1"

flake.nix

@@ -0,0 +1,51 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+      };
+    };
+  };
+
+  outputs = {
+    nixpkgs,
+    flake-utils,
+    rust-overlay,
+    ...
+  }:
+    flake-utils.lib.eachDefaultSystem (system: let
+      overlays = [(import rust-overlay)];
+      pkgs = import nixpkgs {inherit system overlays;};
+
+      runCiLocally = pkgs.writeScriptBin "ci-local" ''
+        echo "Checking Rust formatting..."
+        cargo fmt --check
+
+        echo "Checking clippy..."
+        cargo clippy --all-targets
+
+        echo "Testing Rust code..."
+        cargo test
+      '';
+
+      nativeBuildInputs = with pkgs; [];
+      buildInputs =
+        [runCiLocally]
+        ++ (with pkgs; [
+          # Rust stuff, some stuff dev-only
+          (rust-bin.nightly.latest.default.override {
+            extensions = ["rust-src" "rust-analyzer"];
+          })
+
+          # Linting support
+          alejandra
+        ]);
+    in
+      with pkgs; {
+        devShells.default = mkShell {inherit buildInputs nativeBuildInputs;};
+      });
+}