Fix building via nix flake

default.nix

@@ -16,7 +16,7 @@
     hostSystem = buildSystem;
   };
 
-  garageNix = (import ./nix/garage.nix);
+  garageNix = (import ./nix/garage);
 
 in rec {
 
@@ -80,11 +80,9 @@ in rec {
 
   garage = let
     hostPlatform = pkgs.stdenv.hostPlatform.parsed;
-  in pkgs.callPackage garageNix.package {
+  in garageNix.package {
-    inherit buildSystem;
+    inherit pkgsNix buildSystem;
     hostSystem = "${hostPlatform.cpu.name}-unknown-${hostPlatform.kernel.name}-musl";
-    pkgsSrc = pkgsNix.src;
-
   };
 
   appDirBase = pkgs.buildEnv {

nix/garage/common-nix-system.patch

@@ -0,0 +1,21 @@
+diff --git a/nix/common.nix b/nix/common.nix
+index 1ad809bb..47a92038 100644
+--- a/nix/common.nix
++++ b/nix/common.nix
+@@ -1,4 +1,6 @@
+-let
++{
++  system ? builtins.currentSystem,
++}: let
+   lock = builtins.fromJSON (builtins.readFile ../flake.lock);
+ 
+   inherit (lock.nodes.flake-compat.locked) owner repo rev narHash;
+@@ -8,7 +10,7 @@ let
+     sha256 = narHash;
+   };
+ 
+-  flake = (import flake-compat { system = builtins.currentSystem; src = ../.; });
++  flake = (import flake-compat { inherit system; src = ../.; });
+ in
+ rec {
+   pkgsSrc = flake.defaultNix.inputs.nixpkgs;

nix/garage/default.nix

@@ -2,25 +2,39 @@ rec {
 
   version = "1.0.0";
 
+  package = {
+    pkgsNix,
+    buildSystem,
+    hostSystem,
+  }: let
+
+    pkgs = pkgsNix.default {
+      inherit buildSystem hostSystem;
+    };
+
+    src = pkgs.applyPatches {
+      name = "garage-v${version}-patched";
       src = builtins.fetchGit {
         name = "garage-v${version}";
         url = "https://git.deuxfleurs.fr/Deuxfleurs/garage.git";
         rev = "ff093ddbb8485409f389abe7b5e569cb38d222d2";
       };
+      patches = [
+        ./common-nix-system.patch
+      ];
+    };
 
-  package = {
+    common = (import "${src}/nix/common.nix") {
-    pkgsSrc,
+        system = buildSystem;
-    buildSystem,
+    };
-    hostSystem,
-  }: let
 
     compile = (import "${src}/nix/compile.nix") {
 
       system = buildSystem;
       target = hostSystem;
-      pkgsSrc = pkgsSrc;
+      pkgsSrc = pkgsNix.src;
 
-      cargo2nixOverlay = (import "${src}/nix/common.nix").cargo2nixOverlay;
+      cargo2nixOverlay = common.cargo2nixOverlay;
 
       release = true;
       git_version = version;

tasks/v0.0.3/code/fix-nix-flake.nix

@@ -1,8 +0,0 @@
----
-type: task
----
-
-# Fix `flake.nix`
-
-The `flake.nix` file is currently broken, garage is using
-`builtins.currentSystem` for some reason.