Clean up Nix Flake and packaging (#24)

* refactor(nix): split package.nix from flake.nix

* chore(nix): split checks; add more

* ci: run all nix checks

* ci: build in debug mode

* chore(nix): use versionCheckHook

this makes sure the version test is always run, and on the right package

* chore(nix): nix-filter -> lib.fileset

* feat(nix): support stable nix

* ci: fix clippy check

1 files changed, 17 insertions, 0 deletions

diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..3730822
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,17 @@
+{
+  pkgs ? import nixpkgs {
+    inherit system;
+    config = { };
+    overlays = [ ];
+  },
+  lib ? pkgs.lib,
+  nixpkgs ? <nixpkgs>,
+  system ? builtins.currentSystem,
+}:
+
+let
+  nixForecastPackages = lib.makeScope pkgs.newScope (lib.flip (import ./overlay.nix) pkgs);
+in
+{
+  inherit (nixForecastPackages) nix-forecast;
+}