Expose our packages in flake packages output

flake.nix

@@ -2,25 +2,37 @@
   inputs.nixpkgs.url = "nixpkgs";
 
   outputs = { self, nixpkgs, ...}:
-    let
+  let
+    system = "x86_64-linux";
+    pkgs = import nixpkgs {
+      inherit system;
       # For now we only support x86
-      system = "x86_64-linux";
+      overlays = [ self.overlays.default ];
-      pkgs = import nixpkgs {
+    };
-        inherit system;
+  in
-        overlays = [ self.overlays.default ];
-      };
-    in
     {
       bscOverlay = import ./overlay.nix;
       overlays.default = self.bscOverlay;
-      # full nixpkgs with our overlay applied
-      legacyPackages.${system} = pkgs;
-
-      hydraJobs = {
-        inherit (self.legacyPackages.${system}.bsc-ci) test pkgs;
-      };
 
       # propagate nixpkgs lib, so we can do bscpkgs.lib
       inherit (nixpkgs) lib;
+
+      # full nixpkgs with our overlay applied
+      legacyPackages.${system} = pkgs;
+
+      # packages added by our overlay
+      packages.${system} =
+        let
+          inherit (builtins) attrNames removeAttrs;
+          inherit (nixpkgs.lib) flip filterAttrs getAttrs pipe isDerivation;
+        in
+          # extract the names of the packages from the overlay, then get the
+          # actual packages from the full package set with the overlay applied
+          pipe (self.overlays.default null { inherit (nixpkgs) lib; } ) [
+            attrNames
+            (flip getAttrs pkgs)
+            (flip removeAttrs [ "bsc" ])
+            (filterAttrs (_: isDerivation))
+          ];
     };
 }

overlay.nix

@@ -88,9 +88,7 @@ in bscPkgs // {
       };
     };
 
-    pkgs = filterAttrs (_: isDerivation) bscPkgs;
+    pkgs = final.runCommand "ci-pkgs" { }
-
-    pkgsList = final.runCommand "ci-pkgs" { }
       "printf '%s\n' ${toString (collect isDerivation bscPkgs)} > $out";
 
     tests = final.runCommand "ci-tests" { }
@@ -98,7 +96,7 @@ in bscPkgs // {
 
     all = final.runCommand "ci-all" { }
     ''
-      deps="${toString [ final.bsc-ci.pkgsList final.bsc-ci.tests ]}"
+      deps="${toString [ final.bsc-ci.pkgs final.bsc-ci.tests ]}"
       cat $deps
       printf '%s\n' $deps > $out
     '';