From a31e01e5f7b26f14331672eb8f33723ad4796e6e Mon Sep 17 00:00:00 2001
From: Kenichi Kamiya <kachick1@gmail.com>
Date: Thu, 16 May 2024 20:00:02 +0900
Subject: [PATCH] Inline systems in flake schema and drop flake-utils

Import https://github.com/kachick/anylang-template/pull/98
---
 flake.lock |  34 -----------------
 flake.nix  | 105 ++++++++++++++++++++++++++++++++---------------------
 2 files changed, 64 insertions(+), 75 deletions(-)

diff --git a/flake.lock b/flake.lock
index d59b129..25aec9a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -16,24 +16,6 @@
         "type": "github"
       }
     },
-    "flake-utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1710146030,
-        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1715668745,
@@ -53,24 +35,8 @@
     "root": {
       "inputs": {
         "edge-nixpkgs": "edge-nixpkgs",
-        "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs"
       }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index c0c4921..714c21c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,7 +7,6 @@
     #   - `nix flake update --commit-lock-file` # https://nixos.org/manual/nix/stable/command-ref/new-cli/nix3-flake-update.html
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
     edge-nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
-    flake-utils.url = "github:numtide/flake-utils";
   };
 
   outputs =
@@ -15,53 +14,77 @@
       self,
       nixpkgs,
       edge-nixpkgs,
-      flake-utils,
     }:
-    flake-utils.lib.eachDefaultSystem (
-      system:
-      let
-        pkgs = nixpkgs.legacyPackages.${system};
-        edge-pkgs = edge-nixpkgs.legacyPackages.${system};
-      in
-      rec {
-        formatter = edge-pkgs.nixfmt-rfc-style;
-        devShells.default =
-          with pkgs;
-          mkShell {
-            buildInputs = [
-              # https://github.com/NixOS/nix/issues/730#issuecomment-162323824
-              bashInteractive
-              nil
-              edge-pkgs.nixfmt-rfc-style
+    let
+      # Candidates: https://github.com/NixOS/nixpkgs/blob/release-23.11/lib/systems/flake-systems.nix
+      forAllSystems = nixpkgs.lib.genAttrs [
+        "x86_64-linux"
+        "aarch64-linux"
+        "i686-linux"
+        "x86_64-darwin"
+        # I don't have M1+ mac, providing this for macos-14 free runner https://github.com/actions/runner-images/issues/9741
+        "aarch64-darwin"
+      ];
+    in
+    rec {
+      formatter = forAllSystems (system: edge-nixpkgs.legacyPackages.${system}.nixfmt-rfc-style);
+      devShells = forAllSystems (
+        system:
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+          edge-pkgs = edge-nixpkgs.legacyPackages.${system};
+        in
+        {
+          default =
+            with pkgs;
+            mkShell {
+              buildInputs = [
+                # https://github.com/NixOS/nix/issues/730#issuecomment-162323824
+                bashInteractive
+                nil
+                edge-pkgs.nixfmt-rfc-style
 
-              edge-pkgs.go_1_22
-              edge-pkgs.dprint
-              edge-pkgs.goreleaser
-              edge-pkgs.typos
-              go-task
-            ];
-          };
+                edge-pkgs.go_1_22
+                edge-pkgs.dprint
+                edge-pkgs.goreleaser
+                edge-pkgs.typos
+                go-task
+              ];
+            };
+        }
+      );
 
-        packages.selfup = edge-pkgs.buildGo122Module rec {
-          pname = "selfup";
-          src = pkgs.lib.cleanSource self;
+      packages = forAllSystems (
+        system:
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+          edge-pkgs = edge-nixpkgs.legacyPackages.${system};
           version = "v1.1.2";
-          ldflags = [
-            "-X main.version=${version}"
-            "-X main.commit=${if (self ? rev) then self.rev else "0000000000000000000000000000000000000000"}"
-          ];
+        in
+        rec {
+          selfup = edge-pkgs.buildGo122Module {
+            pname = "selfup";
+            src = pkgs.lib.cleanSource self;
+            version = version;
+            ldflags = [
+              "-X main.version=${version}"
+              "-X main.commit=${if (self ? rev) then self.rev else "0000000000000000000000000000000000000000"}"
+            ];
 
-          # When updating go.mod or go.sum, update this sha together as following
-          vendorHash = "sha256-wZb6U2CSYZvFyT7rT1FWMZpKpuAXjINZrfV0breLguI=";
-        };
+            # When updating go.mod or go.sum, update this sha together as following
+            vendorHash = "sha256-wZb6U2CSYZvFyT7rT1FWMZpKpuAXjINZrfV0breLguI=";
+          };
 
-        packages.default = packages.selfup;
+          default = selfup;
+        }
+      );
 
-        # `nix run`
-        apps.default = {
+      # `nix run`
+      apps = forAllSystems (system: {
+        default = {
           type = "app";
-          program = "${packages.selfup}/bin/selfup";
+          program = "${packages.${system}.selfup}/bin/selfup";
         };
-      }
-    );
+      });
+    };
 }