use nix for Linux workflow (#69)

Author: willox

.editorconfig

@@ -8,3 +8,7 @@ insert_final_newline = true
 [*.yml]
 indent_style = space
 indent_size = 2
+
+[*.nix]
+indent_style = space
+indent_size = 2

.github/workflows/docs.yml

@@ -0,0 +1,44 @@
+name: Linux
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Cache Nix store
+      uses: actions/cache@v3
+      id: nix-cache
+      with:
+        path: /tmp/nix-cache
+        key: nix-cache-${{ hashFiles('flake.nix') }}-${{ hashFiles('flake.lock') }}
+
+    - name: Install Nix
+      uses: cachix/install-nix-action@v20
+      with:
+        github_access_token: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: "Import Nix store"
+      if: "steps.nix-cache.outputs.cache-hit == 'true'"
+      run: "nix-store --import < /tmp/nix-cache"
+
+    - name: Build
+      run: nix build --accept-flake-config
+
+    - name: "Export Nix store"
+      if: "steps.nix-cache.outputs.cache-hit != 'true'"
+      run: "nix-store --export $(find /nix/store -maxdepth 1 -name '*-*') > /tmp/nix-cache"
+
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v2
+      with:
+        path: |
+          result/lib/libauxcov.so
+          result/lib/libauxtest.so
+          result/lib/libdebug_server.so

.github/workflows/linux.yml

@@ -1,4 +1,4 @@
-name: Rust
+name: Windows
 
 on:
   push:
@@ -15,12 +15,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-latest]
+        os: [windows-latest]
         include:
-        - os: ubuntu-latest
-          TOOLCHAIN: stable-i686-unknown-linux-gnu
-          TARGET: i686-unknown-linux-gnu
-
         - os: windows-latest
           TOOLCHAIN: stable-i686-pc-windows-msvc
           TARGET: i686-pc-windows-msvc
@@ -39,17 +35,6 @@ jobs:
         restore-keys: |
           ${{ runner.os }}-cargo-
 
-    - name: Install Ubuntu Deps
-      if: matrix.os == 'ubuntu-latest'
-      run: |
-        sudo dpkg --add-architecture i386
-        sudo apt-get update
-        sudo apt install libc6-i386
-        sudo apt install libstdc++6:i386
-        sudo apt install build-essential g++-multilib
-        sudo apt install libssl-dev:i386
-        sudo apt install zlib1g-dev:i386
-
     - uses: actions-rs/toolchain@v1
       with:
         profile: minimal

.github/workflows/rust.yml .github/workflows/windows.yml

@@ -1,4 +1,5 @@
 /target
+/result
 /.vscode
 *.o
 *.dmb

.gitignore

@@ -0,0 +1,36 @@
+{
+  nixConfig.extra-substituters = [
+    "https://nix-community.cachix.org"
+  ];
+
+  nixConfig.extra-trusted-public-keys = [
+    "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+  ];
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    fenix.url = "github:nix-community/fenix";
+    fenix.inputs.nixpkgs.follows = "nixpkgs";
+    naersk.url = "github:nix-community/naersk";
+    naersk.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = { self, nixpkgs, fenix, naersk }:
+    let
+      toolchain = fenix.packages.i686-linux.stable.toolchain;
+      pkgs = nixpkgs.legacyPackages.x86_64-linux.pkgsi686Linux;
+    in
+    {
+      packages.x86_64-linux.default = (naersk.lib.x86_64-linux.override {
+        cargo = toolchain;
+        rustc = toolchain;
+      }).buildPackage {
+        src = ./.;
+        doCheck = true;
+        copyLibs = true;
+        nativeBuildInputs = [ pkgs.stdenv.cc pkgs.openssl_1_1 pkgs.pkg-config ];
+        CARGO_BUILD_TARGET = "i686-unknown-linux-gnu";
+        CARGO_TARGET_I686_UNKNOWN_LINUX_GNU_LINKER = "${pkgs.stdenv.cc}/bin/${pkgs.stdenv.cc.targetPrefix}cc";
+      };
+    };
+}