Merge pull request haskell-nix#6 from Anton-Latukha/2020-07-06-workflow-add-Nixpkgs-macOS

Workflow: add Nixpkgs-macOS

Author: Anton-Latukha

.github/workflows/Nixpkgs-macOS.yml

@@ -0,0 +1,27 @@
+name: "Nixpkgs, macOS"
+  # Due to macOS is a side-build to test the platform, using nixos-unstable for additional long-term stability of it
+on:
+  # On Git changes in PR
+  pull_request:
+  # On Git changes of the master
+  push:
+    branches:
+      - master
+  schedule:
+    # Every day at 04:45
+    - cron: "45 01 * * *"
+jobs:
+  Nixpkgs_unstable_macOS:
+    name: NixOS-unstable, default GHC (8.8)
+    runs-on: macos-latest
+    continue-on-error: true
+    env:
+      useRev: "true"
+      rev: "nixos-unstable"
+    steps:
+    - name: Git checkout
+      uses: actions/checkout@v2
+    - name: Install Nix
+      uses: cachix/install-nix-action@v10
+    - name: Determined nix-build
+      run: ./build.sh

.github/workflows/main.yml

@@ -64,8 +64,6 @@ jobs:
       uses: actions/checkout@v2
     - name: Install Nix
       uses: cachix/install-nix-action@v10
-      with:
-        nix_path: nixpkgs=channel:nixpkgs-unstable
     - name: Determined nix-build
       run: ./build.sh
   Nixpkgs_stable_Linux:
@@ -79,8 +77,6 @@ jobs:
       uses: actions/checkout@v2
     - name: Install Nix
       uses: cachix/install-nix-action@v10
-      with:
-        nix_path: nixpkgs=channel:nixpkgs-unstable
     - name: Determined nix-build
       run: ./build.sh
   Nixpkgs_SDist_Optimize_Benchmark_Haddock_GHC-8-10_Linux:
@@ -102,8 +98,6 @@ jobs:
       uses: actions/checkout@v2
     - name: Install Nix
       uses: cachix/install-nix-action@v10
-      with:
-        nix_path: nixpkgs=channel:nixpkgs-unstable
     - name: Determined nix-build
       run: ./build.sh
   Nixpkgs_GHCJS_Linux:
@@ -117,22 +111,5 @@ jobs:
       uses: actions/checkout@v2
     - name: Install Nix
       uses: cachix/install-nix-action@v10
-      with:
-        nix_path: nixpkgs=channel:nixpkgs-unstable
-    - name: Determined nix-build
-      run: ./build.sh
-  Nixpkgs_unstable_macOS:
-    name: Nixpkgs, unstable, default (GHC 8.8), macOS
-    runs-on: macos-latest
-    continue-on-error: true
-    env:
-      rev: "nixpkgs-unstable"
-    steps:
-    - name: Git checkout
-      uses: actions/checkout@v2
-    - name: Install Nix
-      uses: cachix/install-nix-action@v10
-      with:
-        nix_path: nixpkgs=channel:nixpkgs-unstable
     - name: Determined nix-build
       run: ./build.sh