From 87f809e0c6556126489d5340d8b3d71c4f85f0f1 Mon Sep 17 00:00:00 2001
From: hacker1024 <hacker1024@users.sourceforge.net>
Date: Sun, 16 Apr 2023 23:16:17 +1000
Subject: [PATCH] dart.list-dart-deps: Add list-dart-deps function

This uses `dart pub deps` (https://dart.dev/tools/pub/cmd/pub-deps) to retrieve information about project dependencies.

It requires a fetch-dart-deps derivation as input.
---
 .../dart/list-dart-deps/default.nix           | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 pkgs/build-support/dart/list-dart-deps/default.nix

diff --git a/pkgs/build-support/dart/list-dart-deps/default.nix b/pkgs/build-support/dart/list-dart-deps/default.nix
new file mode 100644
index 000000000000..5cafd7773d45
--- /dev/null
+++ b/pkgs/build-support/dart/list-dart-deps/default.nix
@@ -0,0 +1,28 @@
+{ stdenv
+, dart
+, jq
+}:
+deps:
+
+builtins.fromJSON (builtins.readFile (stdenv.mkDerivation {
+  name = "${deps.name}-list.json";
+  nativeBuildInputs = [ deps dart jq ];
+
+  unpackPhase = ''
+    runHook preUnpack
+    ln -s "${deps.files}"/pubspec/* .
+    runHook postUnpack
+  '';
+
+  configurePhase = ''
+    runHook preConfigure
+    dart pub get --offline
+    runHook postConfigure
+  '';
+
+  buildPhase = ''
+    runHook preBuild
+    dart pub deps --json | jq .packages > $out
+    runHook postBuild
+  '';
+}))