Use github-actions

Also removed circle ci configuration.

.circleci/config.yml

@@ -1,85 +0,0 @@
-version: 2.1
-defaults: &defaults
-  docker:
-    - image: nixorg/nix:circleci
-      environment:
-        - USER: coot
-commands:
-  setup:
-    description: "setup environment"
-    steps:
-      - run:
-          name: "nix"
-          command: |
-            nix-channel --add https://nixos.org/channels/nixpkgs-unstable nixpkgs
-            nix-channel --update
-      - run:
-          name: "install"
-          command: |
-            nix-env -f "<nixpkgs>" -iA cachix -f https://cachix.org/api/v1/install
-            nix-env -f "<nixpkgs>" -i openssh
-            nix-env -f "<nixpkgs>" -i git
-      - run:
-          name: "cachix"
-          command: |
-            cachix use iohk
-            cachix use free-algebras
-      - checkout
-  cachix-push:
-    description: "cachix push"
-    parameters:
-      o:
-        type: string
-        default: "./result"
-    steps:
-      - run:
-          name: "cachix push"
-          command: cachix push free-algebras << parameters.o >>
-jobs:
-  GHC8101:
-    <<: *defaults
-    steps:
-      - setup
-      - run:
-          name: "GHC 8.10.1"
-          command: |
-            nix-build -A free-category.components.all --argstr compiler ghc8101 -o result-fc
-            nix-build -A examples.components.all      --argstr compiler ghc8101 -o result-ex
-      - cachix-push:
-          o: "./result-fc"
-      - cachix-push:
-          o: "./result-ex"
-  GHC883:
-    <<: *defaults
-    steps:
-      - setup
-      - run:
-          name: "GHC 8.8.3"
-          command: |
-            nix-build -A free-category.components.all --argstr compiler ghc883 -o result-fc
-            nix-build -A examples.components.all      --argstr compiler ghc883 -o result-ex
-      - cachix-push:
-          o: "./result-fc"
-      - cachix-push:
-          o: "./result-ex"
-  GHC865:
-    <<: *defaults
-    steps:
-      - setup
-      - run:
-          name: "GHC 8.6.5"
-          command: |
-            nix-build -A free-category.components.all --argstr compiler ghc865 -o result-fc
-            nix-build -A examples.components.all      --argstr compiler ghc865 -o result-ex
-      - cachix-push:
-          o: result-fc
-      - cachix-push:
-          o: result-ex
-
-workflows:
-  build:
-    jobs:
-      - GHC8101
-      - GHC883
-      - GHC865
-

.github/workflows/posix.yml

@@ -0,0 +1,33 @@
+name: "POSIX"
+on: [push]
+
+jobs:
+  tests:
+    name: "free-category"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: cachix/install-nix-action@v10
+      - name: "cachix"
+        uses: cachix/cachix-action@v6
+        with:
+          name: "free-category"
+          signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
+
+      - name: "nix"
+        run: |
+            echo 'substituters = https://hydra.iohk.io/' | sudo tee -a /etc/nix/nix.conf
+            echo 'trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ=' | sudo tee -a /etc/nix/nix.conf
+
+      - name: "cachix iohk"
+        run: cachix use iohk
+
+      - name: "[GHC 8.6.5]  free-category"
+        run: |
+          nix-build default.nix --argstr compiler ghc865 -A free-category
+
+      - name: "[GHC 8.8.4]  free-category"
+        run: nix-build default.nix --argstr compiler ghc884 -A free-category
+
+      - name: "[GHC 8.10.2] free-category"
+        run: nix-build default.nix --argstr compiler ghc8102 -A free-category