1 files changed, 25 insertions, 6 deletions
diff --git a/nixpkgs/pkgs/development/compilers/flutter/artifacts/fetch-artifacts.nix b/nixpkgs/pkgs/development/compilers/flutter/artifacts/fetch-artifacts.nix
index e0c1440a604f..0e1ce6e678cb 100644
--- a/nixpkgs/pkgs/development/compilers/flutter/artifacts/fetch-artifacts.nix
+++ b/nixpkgs/pkgs/development/compilers/flutter/artifacts/fetch-artifacts.nix
@@ -1,16 +1,22 @@
+# Schema:
+# ${flutterVersion}.${targetPlatform}.${hostPlatform}
+#
+# aarch64-darwin as a host is not yet supported.
+# https://github.com/flutter/flutter/issues/60118
 { lib
 , runCommand
 , xorg
 , cacert
 , unzip
 
-, platform
+, flutterPlatform
+, systemPlatform
 , flutter
 , hash
 }:
 
 let
-  platforms = [
+  flutterPlatforms = [
     "android"
     "ios"
     "web"
@@ -24,21 +30,34 @@ let
   flutter' = flutter.override {
     # Use a version of Flutter with just enough capabilities to download
     # artifacts.
-    supportedTargetPlatforms = [ ];
+    supportedTargetFlutterPlatforms = [ ];
+
+    # Modify flutter-tool's system platform in order to get the desired platform's hashes.
+    flutter = flutter.unwrapped.override {
+      flutterTools = flutter.unwrapped.tools.override {
+        inherit systemPlatform;
+      };
+    };
   };
 in
-runCommand "flutter-artifacts-${platform}"
+runCommand "flutter-artifacts-${flutterPlatform}-${systemPlatform}"
 {
   nativeBuildInputs = [ xorg.lndir flutter' unzip ];
 
   NIX_FLUTTER_TOOLS_VM_OPTIONS = "--root-certs-file=${cacert}/etc/ssl/certs/ca-bundle.crt";
+  NIX_FLUTTER_OPERATING_SYSTEM = {
+    "x86_64-linux" = "linux";
+    "aarch64-linux" = "linux";
+    "x86_64-darwin" = "macos";
+    "aarch64-darwin" = "macos";
+  }.${systemPlatform};
 
   outputHash = hash;
   outputHashMode = "recursive";
   outputHashAlgo = "sha256";
 
   passthru = {
-    inherit platform;
+    inherit flutterPlatform;
   };
 } ''
   export FLUTTER_ROOT="$NIX_BUILD_TOP"
@@ -46,7 +65,7 @@ runCommand "flutter-artifacts-${platform}"
   rm -rf "$FLUTTER_ROOT/bin/cache"
   mkdir "$FLUTTER_ROOT/bin/cache"
 
-  HOME="$(mktemp -d)" flutter precache -v '--${platform}' ${builtins.concatStringsSep " " (map (p: "'--no-${p}'") (lib.remove platform platforms))}
+  HOME="$(mktemp -d)" flutter precache -v '--${flutterPlatform}' ${builtins.concatStringsSep " " (map (p: "'--no-${p}'") (lib.remove flutterPlatform flutterPlatforms))}
   rm -rf "$FLUTTER_ROOT/bin/cache/lockfile"
   find "$FLUTTER_ROOT" -type l -lname '${flutter'}/*' -delete