pkg(dart-2.12.1): Added dart 2.12.1

packages/dart/2.12.1/build.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+curl -L "https://storage.googleapis.com/dart-archive/channels/stable/release/2.12.1/sdk/dartsdk-linux-x64-release.zip" -o dart.zip
+
+unzip dart.zip
+rm dart.zip
+
+cp -r dart-sdk/* .
+rm -rf dart-sdk
+
+chmod -R +rx bin

packages/dart/2.12.1/environment

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+# Put 'export' statements here for environment variables
+export PATH=$PWD/bin:$PATH

packages/dart/2.12.1/metadata.json

@@ -0,0 +1,6 @@
+{
+  "language": "dart",
+  "version": "2.12.1",
+  "aliases": [],
+  "author": "Thomas Hobson <git@hexf.me>"
+}

packages/dart/2.12.1/run

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+# Put instructions to run the runtime
+dart run $*

packages/dart/2.12.1/test.dart

@@ -0,0 +1,3 @@
+void main() {
+  print('OK');
+}