templates/final: use slightly better practices

1 files changed, 24 insertions, 0 deletions

diff --git a/templates/full/nix/packages.nix b/templates/full/nix/packages.nix
new file mode 100644
index 0000000..8b23ea7
--- /dev/null
+++ b/templates/full/nix/packages.nix
@@ -0,0 +1,24 @@
+{self, ...}: {
+  flake.overlays.default = _: prev: {
+    foo = prev.callPackage ./derivation.nix {inherit self;};
+  };
+
+  perSystem = {
+    lib,
+    pkgs,
+    ...
+  }: {
+    package = let
+      fixup = lib.filterAttrs (
+        _: v:
+          builtins.elem (v.meta.platforms or []) && !(v.meta.broken or false)
+      );
+
+      unfiltered = lib.fix (final: self.overlays.default final pkgs);
+      pkgs' = fixup unfiltered;
+    in {
+      inherit (pkgs') foo;
+      default = pkgs'.foo;
+    };
+  };
+}