flutter: Make it possible to override operatingSystem internally

Makes it possible to get artifact hashes for other system platforms. Useful for an update script.
NixOS · Jan 14, 2024 · b73ceb1 · b73ceb1
1 parent da6757f
commit b73ceb1
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diff --git a/pkgs/development/compilers/flutter/artifacts/fetch-artifacts.nix b/pkgs/development/compilers/flutter/artifacts/fetch-artifacts.nix
@@ -40,6 +40,12 @@ 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";

diff --git a/pkgs/development/compilers/flutter/patches/override-operating-system.patch b/pkgs/development/compilers/flutter/patches/override-operating-system.patch
@@ -0,0 +1,13 @@
+diff --git a/packages/flutter_tools/lib/src/base/platform.dart b/packages/flutter_tools/lib/src/base/platform.dart
+index 45da89ad4c..2d79dbaece 100644
+--- a/packages/flutter_tools/lib/src/base/platform.dart
++++ b/packages/flutter_tools/lib/src/base/platform.dart
+@@ -132,7 +132,7 @@ class LocalPlatform extends Platform {
+   String get pathSeparator => io.Platform.pathSeparator;
+
+   @override
+-  String get operatingSystem => io.Platform.operatingSystem;
++  String get operatingSystem => io.Platform.environment['NIX_FLUTTER_OPERATING_SYSTEM'] ?? io.Platform.operatingSystem;
+
+   @override
+   String get operatingSystemVersion => io.Platform.operatingSystemVersion;