inko: 0.18.1 -> 0.19.1 (#463402)

pkgs/by-name/in/inko/package.nix

@@ -15,16 +15,16 @@
 
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "inko";
-  version = "0.18.1";
+  version = "0.19.1";
 
   src = fetchFromGitHub {
     owner = "inko-lang";
     repo = "inko";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-jVfAfR02R2RaTtzFSBoLuq/wdPaaI/eochrZaRVdmHY=";
+    hash = "sha256-ZHVOwYvNRL2ObZt2PvayoqvS64MumN4oXQOgeCWbEUM=";
   };
 
-  cargoHash = "sha256-IOMhwcZHB5jVYDM65zifxCjVHWl1EBbxNA3WVmarWcs=";
+  cargoHash = "sha256-BHrbqPMQnhw8pjN8e0/qW1rPe/fMhs2iUbRVPt5ATrg=";
 
   buildInputs = [
     libffi

pkgs/by-name/in/inko/test.nix

@@ -7,26 +7,30 @@
 
 let
   source =
+    # https://docs.inko-lang.org/manual/v0.19.1/getting-started/hello-concurrency/#channels
     writeText "hello.inko" # inko
       ''
         import std.process (sleep)
-        import std.stdio (STDOUT)
+        import std.stdio (Stdout)
+        import std.sync (Channel)
         import std.time (Duration)
 
-        class async Printer {
-          fn async print(message: String, channel: Channel[Nil]) {
-            let _ = STDOUT.new.print(message)
+        type async Printer {
+          fn async print(message: String, channel: uni Channel[Nil]) {
+            let _ = Stdout.new.print(message)
 
             channel.send(nil)
           }
         }
 
-        class async Main {
+        type async Main {
           fn async main {
-            let channel = Channel.new(size: 2)
+            let channel = Channel.new
 
-            Printer().print('Hello', channel)
-            Printer().print('world', channel)
+            Printer().print('Hello', recover channel.clone)
+            Printer().print('world', recover channel.clone)
+
+            sleep(Duration.from_millis(500))
 
             channel.receive
             channel.receive