dbqn: init at 0.0.0+unstable=2021-10-02

Many thanks @sternenseemann for the expression. I made a rewrite to keep it
clean.

pkgs/development/interpreters/bqn/dzaima-bqn/default.nix

@@ -0,0 +1,71 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, jdk
+, makeWrapper
+, buildNativeImage ? true
+}:
+
+stdenv.mkDerivation rec {
+  pname = "dbqn" + lib.optionalString buildNativeImage "-native";
+  version = "0.0.0+unstable=2021-10-02";
+
+  src = fetchFromGitHub {
+    owner = "dzaima";
+    repo = "BQN";
+    rev = "d6bd66d26a89b8e9f956ec4f6b6bc5dcb5861a09";
+    hash = "sha256-BLRep7OGHfDFowIAsBS19PTzgIhrdKMnO2JSjKuwGYo=";
+  };
+
+  buildInputs = lib.optional (!buildNativeImage) jdk;
+
+  nativeBuildInputs = [
+    makeWrapper
+  ] ++ lib.optional buildNativeImage jdk;
+
+  dontConfigure = true;
+
+  buildPhase = ''
+    runHook preBuild
+
+    mkdir -p output
+    javac --release 8 -encoding UTF-8 -d ./output $(find src -name '*.java')
+    (cd output; jar cvfe ../BQN.jar BQN.Main *)
+    rm -fr output
+  '' + lib.optionalString buildNativeImage ''
+    native-image --report-unsupported-elements-at-runtime \
+      -J-Dfile.encoding=UTF-8 -jar BQN.jar dbqn
+  '' + ''
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin
+
+  '' + (if buildNativeImage then ''
+    mv dbqn $out/bin
+  '' else ''
+    mkdir -p $out/share/${pname}
+    mv BQN.jar $out/share/${pname}/
+
+    makeWrapper "${lib.getBin jdk}/bin/java" "$out/bin/dbqn" \
+      --add-flags "-jar $out/share/${pname}/BQN.jar"
+  '') + ''
+    ln -s $out/bin/dbqn $out/bin/bqn
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/dzaima/BQN";
+    description = "A BQN implementation in Java" + lib.optionalString buildNativeImage ", compiled as a native image";
+    license = licenses.mit;
+    maintainers = with maintainers; [ AndersonTorres sternenseemann ];
+    inherit (jdk.meta) platforms;
+    priority = if buildNativeImage then 10 else 0;
+  };
+}
+# TODO: Processing app
+# TODO: minimalistic JDK

pkgs/top-level/all-packages.nix

@@ -12847,6 +12847,16 @@ with pkgs;
     bqn-path = "${cbqn-phase1}/bin/bqn";
   };
 
+  dbqn = callPackage ../development/interpreters/bqn/dzaima-bqn {
+    buildNativeImage = false;
+    stdenv = stdenvNoCC;
+    jdk = jre;
+  };
+  dbqn-native = callPackage ../development/interpreters/bqn/dzaima-bqn {
+    buildNativeImage = true;
+    jdk = graalvm11-ce;
+  };
+
   chibi = callPackage ../development/interpreters/chibi { };
 
   ceptre = callPackage ../development/interpreters/ceptre { };