From 344f98552660520eb2b5f354d16cf3534f0849bf Mon Sep 17 00:00:00 2001
From: Ryan Mulligan <ryan@ryantm.com>
Date: Wed, 20 Dec 2023 08:56:05 -0800
Subject: [PATCH] dev: remove i686 support; simplify flake

Why
===
* flake.nix had a lot of almost redundant lines in it.
* i686 support is probably being dropped soon in nixpkgs
https://github.com/NixOS/nixpkgs/pull/266164

What changed
==
* Add new input nix-systems/default which represents the default
systems typically used in the Nix community
* Define and use an eachSystem function that simplifies the flake.nix file
---
 flake.lock | 18 +++++++++++++++++-
 flake.nix  | 34 +++++++++-------------------------
 2 files changed, 26 insertions(+), 26 deletions(-)

diff --git a/flake.lock b/flake.lock
index 3be370f..8ec68d4 100644
--- a/flake.lock
+++ b/flake.lock
@@ -61,7 +61,23 @@
       "inputs": {
         "darwin": "darwin",
         "home-manager": "home-manager",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "systems": "systems"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
       }
     }
   },
diff --git a/flake.nix b/flake.nix
index 13d863f..1df2443 100644
--- a/flake.nix
+++ b/flake.nix
@@ -11,6 +11,7 @@
       url = "github:nix-community/home-manager";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    systems.url = "github:nix-systems/default";
   };
 
   outputs = {
@@ -18,9 +19,9 @@
     nixpkgs,
     darwin,
     home-manager,
+    systems,
   }: let
-    agenix = system: nixpkgs.legacyPackages.${system}.callPackage ./pkgs/agenix.nix {};
-    doc = system: nixpkgs.legacyPackages.${system}.callPackage ./pkgs/doc.nix {};
+    eachSystem = nixpkgs.lib.genAttrs (import systems);
   in {
     nixosModules.age = import ./modules/age.nix;
     nixosModules.default = self.nixosModules.age;
@@ -33,30 +34,13 @@
 
     overlays.default = import ./overlay.nix;
 
-    formatter.x86_64-darwin = nixpkgs.legacyPackages.x86_64-darwin.alejandra;
-    packages.x86_64-darwin.agenix = agenix "x86_64-darwin";
-    packages.x86_64-darwin.doc = doc "x86_64-darwin";
-    packages.x86_64-darwin.default = self.packages.x86_64-darwin.agenix;
+    formatter = eachSystem (system: nixpkgs.legacyPackages.${system}.alejandra);
 
-    formatter.aarch64-darwin = nixpkgs.legacyPackages.aarch64-darwin.alejandra;
-    packages.aarch64-darwin.agenix = agenix "aarch64-darwin";
-    packages.aarch64-darwin.doc = doc "aarch64-darwin";
-    packages.aarch64-darwin.default = self.packages.aarch64-darwin.agenix;
-
-    formatter.aarch64-linux = nixpkgs.legacyPackages.aarch64-linux.alejandra;
-    packages.aarch64-linux.agenix = agenix "aarch64-linux";
-    packages.aarch64-linux.doc = doc "aarch64-linux";
-    packages.aarch64-linux.default = self.packages.aarch64-linux.agenix;
-
-    formatter.i686-linux = nixpkgs.legacyPackages.i686-linux.alejandra;
-    packages.i686-linux.agenix = agenix "i686-linux";
-    packages.i686-linux.doc = doc "i686-linux";
-    packages.i686-linux.default = self.packages.i686-linux.agenix;
-
-    formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.alejandra;
-    packages.x86_64-linux.agenix = agenix "x86_64-linux";
-    packages.x86_64-linux.default = self.packages.x86_64-linux.agenix;
-    packages.x86_64-linux.doc = doc "x86_64-linux";
+    packages = eachSystem (system: {
+      agenix = nixpkgs.legacyPackages.${system}.callPackage ./pkgs/agenix.nix {};
+      doc = nixpkgs.legacyPackages.${system}.callPackage ./pkgs/doc.nix {};
+      default = self.packages.${system}.agenix;
+    });
 
     checks =
       nixpkgs.lib.genAttrs ["aarch64-darwin" "x86_64-darwin"] (system: {