From f4ecea2443e7905f01d06b9a00c3219c0c7799ff Mon Sep 17 00:00:00 2001
From: Lily Foster <lily@lily.flowers>
Date: Fri, 23 Aug 2024 12:40:23 -0400
Subject: [PATCH] flake: temporarily use nix-update git

---
 flake.lock | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 flake.nix  | 15 +++++++++++--
 2 files changed, 78 insertions(+), 2 deletions(-)

diff --git a/flake.lock b/flake.lock
index 1fd089cd..3a3d4360 100644
--- a/flake.lock
+++ b/flake.lock
@@ -16,6 +16,49 @@
         "type": "github"
       }
     },
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": [
+          "nix-update",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1719994518,
+        "narHash": "sha256-pQMhCCHyQGRzdfAkdJ4cIWiw+JNuWsTX7f0ZYSyz0VY=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "9227223f6d922fee3c7b190b2cc238a99527bbb7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "nix-update": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "treefmt-nix": "treefmt-nix"
+      },
+      "locked": {
+        "lastModified": 1724271552,
+        "narHash": "sha256-xn0dC4M3mfItxP+s3/v3Hz/CSKp74VH/gMfufKxl9/4=",
+        "owner": "Mic92",
+        "repo": "nix-update",
+        "rev": "737121eccb67542e8c004c64da833fede2e80c64",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Mic92",
+        "repo": "nix-update",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1724224976,
@@ -51,6 +94,7 @@
     "root": {
       "inputs": {
         "flake-compat": "flake-compat",
+        "nix-update": "nix-update",
         "nixpkgs": "nixpkgs",
         "nixpkgs-stable": "nixpkgs-stable",
         "rust-overlay": "rust-overlay"
@@ -75,6 +119,27 @@
         "repo": "rust-overlay",
         "type": "github"
       }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "nix-update",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1719887753,
+        "narHash": "sha256-p0B2r98UtZzRDM5miGRafL4h7TwGRC4DII+XXHDHqek=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "bdb6355009562d8f9313d9460c0d3860f525bc6c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index d0d4e596..7b5d1b04 100644
--- a/flake.nix
+++ b/flake.nix
@@ -13,6 +13,12 @@
       url = "github:nix-community/flake-compat";
       flake = false;
     };
+
+    # TODO: remove when nix-update is bumped in nixpkgs with a release containing <https://github.com/Mic92/nix-update/pull/269>
+    nix-update = {
+      url = "github:Mic92/nix-update";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs = { self, nixpkgs, nixpkgs-stable, rust-overlay, ... }: let
@@ -44,14 +50,19 @@
       default = import ./nixos { cosmicOverlay = self.overlays.default; };
     };
 
-    legacyPackages = forAllSystems (system: let lib = nixpkgs.lib; pkgs = nixpkgs.legacyPackages.${system}; in {
+    legacyPackages = forAllSystems (system: let
+      lib = nixpkgs.lib;
+      # TODO: revert when nix-update is bumped in nixpkgs with a release containing <https://github.com/Mic92/nix-update/pull/269>
+      #pkgs = nixpkgs.legacyPackages.${system};
+      pkgs = nixpkgs.legacyPackages.${system}.extend (final: prev: { nix-update = self.inputs.nix-update.packages.${system}.default; });
+    in {
       update = pkgs.writeShellApplication {
         name = "cosmic-unstable-update";
 
         text = lib.concatStringsSep "\n" (lib.mapAttrsToList (attr: drv:
           if drv ? updateScript && (lib.isList drv.updateScript) && (lib.length drv.updateScript) > 0
             then lib.escapeShellArgs (drv.updateScript ++ lib.optionals (lib.match "nix-update|.*/nix-update" (lib.head drv.updateScript) != null) [ "--version" "branch=HEAD" "--commit" attr ])
-            else builtins.toString drv.updateScript or "") self.packages.${system});
+            else builtins.toString drv.updateScript or "") (self.lib.packagesFor pkgs));
       };
 
       vm = nixpkgs.lib.makeOverridable ({ nixpkgs }: let