Implement production of hydraJobs on a generic flake

Author: bladyjoker

flake.nix

@@ -25,6 +25,7 @@
 
   outputs =
     inputs@{
+      self,
       nixpkgs,
       flake-parts,
       ...
@@ -50,10 +51,17 @@
 
       systems = [
         "x86_64-linux"
-        # "x86_64-darwin"
-        # "aarch64-linux"
-        # "aarch64-darwin"
+        "x86_64-darwin"
+        "aarch64-linux"
+        "aarch64-darwin"
       ];
+
+      flake.hydraJobs = import ./nix/hydra.nix {
+        flake = self;
+        inherit lib;
+        systems = [ "x86_64-linux" ];
+      };
+
     };
 
 }

nix/build.nix

@@ -1,13 +1,14 @@
-{ inputs, ... }:
+# NOTE(bladyjoker): Removing the hydraJobs from iogx to produce it generically for the entire flake after
+{ inputs, config, ... }:
 {
-  flake = inputs.iogx.lib.mkFlake {
+  flake = builtins.removeAttrs (inputs.iogx.lib.mkFlake {
 
     inherit inputs;
 
     repoRoot = ./..;
 
     outputs = import ./outputs.nix;
 
-    systems = [ "x86_64-linux" ];
-  };
+    inherit (config) systems;
+  }) [ "hydraJobs" ];
 }

nix/hydra.nix

@@ -0,0 +1,70 @@
+# Make default hydraJobs from Flake outputs
+# If you have the following checks/devShells/packages
+# ├───checks
+# │   └───x86_64-linux
+# │       ├───check-foo: derivation 'check-foo'
+# │       ├───check-bar: derivation 'check-bar'
+# │   └───x86_64-darwin
+# │       ├───check-foo: derivation 'check-foo'
+# │       ├───check-bar: derivation 'check-bar'
+# ├───devShells
+# │   └───x86_64-linux
+# │       ├───dev-foo: development environment 'dev-foo'
+# │       ├───dev-bar: development environment 'dev-bar'
+# │   └───x86_64-darwin
+# │       ├───dev-foo: development environment 'dev-foo'
+# │       ├───dev-bar: development environment 'dev-bar'
+# └───packages
+#     └───x86_64-linux
+#         ├───foo: package 'foo'
+#         ├───bar: package 'bar'
+#     └───x86_64-darwin
+#         ├───foo: package 'foo'
+#         ├───bar: package 'bar'
+# This function will produce hydraJobs as
+# ├───hydraJobs
+# │   ├───checks
+# │   │   ├───check-foo
+# │   │   │   └───x86_64-linux: derivation 'check-foo'
+# │   │   │   └───x86_64-darwin: derivation 'check-foo'
+# │   │   ├───check-bar
+# │   │   │   └───x86_64-linux: derivation 'check-bar'
+# │   │   │   └───x86_64-darwin: derivation 'check-bar'
+# │   ├───devShells
+# │   │   ├───dev-foo
+# │   │   │   └───x86_64-linux: derivation 'dev-foo'
+# │   │   │   └───x86_64-darwin: derivation 'dev-foo'
+# │   │   ├───dev-bar
+# │   │   │   └───x86_64-linux: derivation 'dev-bar'
+# │   │   │   └───x86_64-darwin: derivation 'dev-bar'
+# │   └───packages
+# │       ├───foo
+# │       │   └───x86_64-linux: derivation 'foo'
+# │       │   └───x86_64-darwin: derivation 'foo'
+# │       ├───bar
+# │       │   └───x86_64-linux: derivation 'bar'
+# │       │   └───x86_64-darwin: derivation 'bar'
+{
+  flake,
+  lib,
+  systems,
+  ...
+}:
+let
+  flakeOutputs = [
+    "packages"
+    "checks"
+    "devShells"
+  ];
+in
+lib.genAttrs flakeOutputs (
+  flakeOutput:
+  lib.foldl' lib.recursiveUpdate { } (
+    builtins.map (
+      system:
+      lib.genAttrs (builtins.attrNames flake.${flakeOutput}.${system}) (drvName: {
+        ${system} = flake.${flakeOutput}.${system}.${drvName};
+      })
+    ) systems
+  )
+)