From 7e80de22807df96d1433f1a75346a543432b9730 Mon Sep 17 00:00:00 2001
From: rsoeldner <r.soeldner@gmail.com>
Date: Thu, 6 Jul 2023 14:10:47 +0200
Subject: [PATCH 1/4] add nix cache workflow

---
 .github/workflows/nix.yml | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 .github/workflows/nix.yml

diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
new file mode 100644
index 000000000..e191d59d2
--- /dev/null
+++ b/.github/workflows/nix.yml
@@ -0,0 +1,34 @@
+name: Build and cache with Nix
+
+on:
+  workflow_dispatch:
+  push:
+
+jobs:
+  build-and-cache:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-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
\ No newline at end of file

From 7f6a1c17e42b3dfb42b25bbf1b8c3eb9aa08fae7 Mon Sep 17 00:00:00 2001
From: rsoeldner <r.soeldner@gmail.com>
Date: Fri, 7 Jul 2023 10:18:49 +0200
Subject: [PATCH 2/4] Correct print output

---
 .github/workflows/nix.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index e191d59d2..abfe77cfe 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -30,5 +30,5 @@ jobs:
     - name: Build and cache artifacts
       timeout-minutes: 740
       run: |
-        echo Building the project and its devShell
+        echo Building the default flake
         nix build
\ No newline at end of file

From 04ddfce28c583b9c8342d0c4f07983e2bff45443 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Enis=20Bayramo=C4=9Flu?= <enisbayramoglu@gmail.com>
Date: Thu, 20 Jul 2023 15:55:40 +0200
Subject: [PATCH 3/4] Add devShell to Nix action

---
 .github/workflows/nix.yml |  4 ++--
 flake.nix                 | 14 +++++++++++++-
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index abfe77cfe..6a419a9e8 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -30,5 +30,5 @@ jobs:
     - name: Build and cache artifacts
       timeout-minutes: 740
       run: |
-        echo Building the default flake
-        nix build
\ No newline at end of file
+        echo Building the default package and its devShell
+        nix build .#check
diff --git a/flake.nix b/flake.nix
index 0d2f68bbc..61053f32c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -41,8 +41,20 @@
             };
         })
       ];
-    in flake // {
+      # This package depends on other packages at buildtime, but its output does not
+      # depend on them. This way, we don't have to download the entire closure to verify
+      # that those packages build.
+      mkCheck = name: package: pkgs.runCommand ("check-"+name) {} ''
+        echo ${name}: ${package}
+        echo works > $out
+      '';
+    in flake // rec {
       packages.default = flake.packages."pact:exe:pact";
+      packages.check = pkgs.runCommand "check" {} ''
+        echo ${mkCheck "pact" packages.default}
+        echo ${mkCheck "devShell" devShell}
+        echo works > $out
+      '';
 
       devShell = pkgs.haskellPackages.shellFor {
         buildInputs = with pkgs.haskellPackages; [

From 3a52ce961865ef6a9d9065fd9a1da6a6be3a7865 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Enis=20Bayramo=C4=9Flu?= <enisbayramoglu@gmail.com>
Date: Thu, 20 Jul 2023 16:01:39 +0200
Subject: [PATCH 4/4] Use the devShell from haskell.nix

---
 flake.nix | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/flake.nix b/flake.nix
index a4ad522af..fd0413a1d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -52,18 +52,8 @@
       packages.default = flake.packages."pact:exe:pact";
       packages.check = pkgs.runCommand "check" {} ''
         echo ${mkCheck "pact" packages.default}
-        echo ${mkCheck "devShell" devShell}
+        echo ${mkCheck "devShell" flake.devShell}
         echo works > $out
       '';
-
-      devShell = pkgs.haskellPackages.shellFor {
-        buildInputs = with pkgs.haskellPackages; [
-          cabal-install
-          haskell-language-server
-          # hlint
-        ];
-
-        withHoogle = true;
-      };
     });
 }