CI: GitHub: add On-Release-Cabal-Linux

Author: Anton-Latukha

.github/workflows/On-Release-Cabal-Linux.yml

@@ -0,0 +1,43 @@
+name: "Release testing, Hackage, Cabal, Linux"
+
+on:
+  release:
+    # created: a draft is saved, or a release or pre-release is published without previously being saved as a draft
+    types: [ created ]
+
+jobs:
+
+  build10:
+    name: "GHC"
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        packageRoots: [ ./hnix-store-core, ./hnix-store-remote ]
+        # Since CI by default tests boundary GHCs, test middle versions of GHCs
+        ghc: [ "8.8", "8.6"]
+    defaults:
+      run:
+        working-directory: "${{ matrix.packageRoots }}"
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: recursive
+      - name: Cache of ~/.cabal/packages, ~/.cabal/store and dist-newstyle
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.cabal/packages
+            ~/.cabal/store
+            dist-newstyle
+          key: ${{ runner.os }}-Cabal-${{ matrix.ghc }}
+      - uses: haskell/actions/setup@v1
+        with:
+          ghc-version: ${{ matrix.ghc }}
+      - name: "Install additional system packages"
+        run: sudo apt install libsodium-dev
+      #  2020-08-01: NOTE: Nix instantiate still needed for HNix tests
+      - name: "Install Nix"
+        uses: cachix/install-nix-action@v12
+      - run: cabal v2-configure --disable-optimization --enable-tests --enable-deterministic
+      - run: cabal v2-build
+      - run: cabal v2-test