From: Chuck <chuck@intelligence.org>
Date: Mon, 19 Apr 2021 22:36:51 +0000 (-0700)
Subject: Offer "overlay" and "overlays" flake outputs
X-Git-Tag: v1.3.0~2
X-Git-Url: http://git.scottworley.com/git-cache/commitdiff_plain/9f4532133d9e812f492207d61eaa871043193a39?ds=inline;hp=5b9fb2cc74808778004c96132d6a9e4ec175c768

Offer "overlay" and "overlays" flake outputs

This is the preferred way to define packages in flakes according to
https://github.com/NixOS/rfcs/pull/49/files#r448298299
---

diff --git a/Changelog b/Changelog
index 59f276a..f81136a 100644
--- a/Changelog
+++ b/Changelog
@@ -1,4 +1,6 @@
 ## [Unreleased]
+### Added
+- "overlay" and "overlays" flake outputs
 
 
 ## [1.2.3] - 2020-08-25
diff --git a/flake.nix b/flake.nix
index 49594a7..195cc33 100644
--- a/flake.nix
+++ b/flake.nix
@@ -11,12 +11,17 @@
           { }).stdenvBootstrapTools));
 
       packages = for-supported-systems (system: {
-        git-cache = import ./. { pkgs = nixpkgs.legacyPackages."${system}"; };
+        inherit (nixpkgs.legacyPackages."${system}".appendOverlays
+          [ self.overlay ])
+          git-cache;
       });
 
     in {
       inherit packages;
 
+      overlay = final: prev: { git-cache = import ./. { pkgs = final; }; };
+      overlays = { git-cache = self.overlay; };
+
       defaultApp = for-supported-systems (system: {
         type = "app";
         program = "${packages."${system}".git-cache}/bin/git-cache";