Add support for Nix flakes and haskell.nix

.github/workflows/nix.yml

@@ -1,4 +1,31 @@
 name: Build and cache with Nix
 
 on:
-    workflow_dispatch:
+  workflow_dispatch:
+  push:
+
+jobs:
+  build-and-cache:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    - name: Set up Nix with caching
+      uses: kadena-io/setup-nix-with-cache@v1
+      with:
+        cache_url: s3://nixcache.chainweb.com?region=us-east-1
+        signing_private_key: ${{ secrets.NIX_CACHE_PRIVATE_KEY }}
+
+    - name: Set up AWS credentials
+      uses: aws-actions/configure-aws-credentials@v2
+      with:
+        aws-access-key-id: ${{ secrets.NIX_CACHE_AWS_ACCESS_KEY_ID }}
+        aws-secret-access-key: ${{ secrets.NIX_CACHE_AWS_SECRET_ACCESS_KEY }}
+        aws-region: us-east-1
+
+    - name: Build and cache artifacts
+      timeout-minutes: 740
+      run: |
+        echo Building the project and its devShell
+        nix build .#check

cabal.project

@@ -50,31 +50,41 @@ package yet-another-logger
 
 -- -------------------------------------------------------------------------- --
 -- Source Repository Packages
+--
+-- In order to determine proper sha256 value each time the revision is
+-- changed, please run the following command:
+--
+--   nix-prefetch-git --url <location> --rev <tag>
 
 source-repository-package
     type: git
     location: https://github.com/kadena-io/pact.git
     tag: 842fbc4256b3cbbde337dbeaa393b649a26f1574
+    --sha256: sha256-jD4Y2NOSYT0EQHs5BRSVvu8asfvRwt5XLDuZwbcG4mk=
 
 source-repository-package
     type: git
     location: https://github.com/kadena-io/chainweb-storage.git
     tag: af9f42c78bcd703ac382cfd8101c6d1c66a035f1
+    --sha256: sha256-+C4yNKjf0SY3mwxjmHJ8OJGAfcZz1HTFQyT09fhQ9Co=
 
 source-repository-package
     type: git
     location: https://github.com/kadena-io/rocksdb-haskell.git
     tag: c2b3dd8bb714a12ea6763565d168a03df38fcc58
+    --sha256: sha256-gLkxfHeg4D7S53Uzt807Q1bD0/s5dO7b+51Rbrq2XYg=
 
 source-repository-package
     type: git
     location: https://github.com/kadena-io/rosetta.git
     tag: 6c8dd2eea1f6d0dba925646dbcb6e07feeccbfd5
+    --sha256: sha256-EE8A/5wJYqIfx1uz/v3QjWCFgaeVLf/fi1r03A3w8qY=
 
 source-repository-package
     type: git
     location: https://github.com/kadena-io/kadena-ethereum-bridge.git
     tag: 10f21e96af1dce4f13e261be9dfad8c28cd299f7
+    --sha256: sha256-E+9yLZYLcRd4PoBeQXWhOS+ddpVO6jDP6ca+eEwVS+0=
 
 -- Required for GHC-9:
 
@@ -83,6 +93,7 @@ source-repository-package
     type: git
     location: https://github.com/larskuhtz/ixset-typed
     tag: d8019c3404d6f3b3c0b0416e9899cfdf614ef425
+    --sha256: sha256-AwS/uqzUQrTUgxEHNjpX65JKFcaOuZN+03mI16JXuiY=
 
 -- -------------------------------------------------------------------------- --
 -- Relaxed Bounds

default-flake.nix

@@ -0,0 +1,50 @@
+let flakeDefaultNix = (import (
+      fetchTarball {
+         url = "https://github.com/edolstra/flake-compat/archive/35bb57c0c8d8b62bbfd284272c928ceb64ddbde9.tar.gz";
+         sha256 = "1prd9b1xx8c0sfwnyzkspplh30m613j42l1k789s521f4kv4c2z2"; }
+     ) {
+       src =  ./.;
+     }).defaultNix;
+    inputs = flakeDefaultNix.inputs;
+    pkgsDef = import inputs.nixpkgs (import inputs.haskellNix {}).nixpkgsArgs;
+in
+{ pkgs ? pkgsDef
+, compiler ? "ghc8107"
+, flakePath ? flakeDefaultNix.outPath
+, nix-filter ? inputs.nix-filter
+, ...
+}:
+let haskellSrc = with nix-filter.lib; filter {
+      root = flakePath;
+      exclude = [
+        ".github"
+        ".gitignore"
+        ".gitattributes"
+        "docs"
+        "examples"
+        (matchExt "nix")
+        "flake.lock"
+      ];
+    };
+    chainweb-node = pkgs.haskell-nix.project' {
+      src = haskellSrc;
+      compiler-nix-name = compiler;
+      projectFileName = "cabal.project";
+      shell.tools = {
+        cabal = {};
+      };
+      shell.buildInputs = with pkgs; [
+        zlib
+        pkgconfig
+      ];
+      modules = [
+        {
+          packages.http2.doHaddock = false;
+        }
+      ];
+    };
+    flake = chainweb-node.flake {};
+    default = flake.packages."chainweb:exe:chainweb-node";
+in {
+  inherit flake default haskellSrc;
+}

default.nix

@@ -135,4 +135,4 @@ pkgs.haskell.packages.${compiler}.developPackage {
   });
 
   inherit returnShellEnv;
-}
+}