Bug#1140414: ITP: dart - Dart SDK (Dart VM, dart2js and tools)

Package: wnpp
Severity: wishlist
Owner: Juan Manuel Mendez Rey <[email protected]>
X-Debbugs-Cc: [email protected]

* Package name : dart
Version : 3.13.x
Upstream Authors : The Dart project authors (Google LLC)
* URL : https://dart.dev
Source : https://github.com/dart-lang/sdk
* License : BSD-3-Clause (plus bundled third-party trees, each under
its own DFSG-compatible license; see debian/copyright)
Programming Lang: Dart, C++
Description : Dart SDK (Dart VM, dart2js and tools)

The Dart SDK provides the Dart VM, the AOT/native compilers, the
dart-to-JavaScript compiler (dart2js), the analyzer and the dart command-line
developer tools. It is the reference toolchain for the Dart language.

Why this matters for Debian: several requested packages are blocked solely
because Dart is not in the archive:
- #998024 RFP: Dart Sass -- the reference Sass compiler, built with dart2js
- #931793 RFP: fluttersdk -- Flutter, which is built on the Dart SDK
- #1051470 ITP: esbuild-sass-plugin (depends on the above)

Packaging note (the one unusual point, expanded on debian-devel):
Dart is self-hosting (its front-end is written in Dart), so building it needs a
previously-built Dart, exactly like ghc, gnat (Ada) and ocaml. The package
Build-Depends on a previous dart for that bootstrap; the source tarball contains
NO prebuilt binary. A working proof of concept that builds the Dart SDK FROM
SOURCE, offline, in sbuild --chroot-mode=unshare, with the Debian system
toolchain (gn, ninja, clang, lld) and de-vendored zlib/double-conversion, is at:
https://salsa.debian.org/mendezr/dart

I intend to maintain this within a suitable team (home-assistant/js)