From dbf7134d29c504615b31ad5c277bd3ade46684dc Mon Sep 17 00:00:00 2001
From: Pavol Rusnak <pavol@rusnak.io>
Date: Wed, 8 Dec 2021 23:11:49 +0100
Subject: [PATCH] rustpython: init at unstable-2021-12-09

---
 .../interpreters/python/default.nix           |  4 ++
 .../python/rustpython/default.nix             | 44 +++++++++++++++++++
 pkgs/top-level/all-packages.nix               |  2 +-
 3 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100644 pkgs/development/interpreters/python/rustpython/default.nix

diff --git a/pkgs/development/interpreters/python/default.nix b/pkgs/development/interpreters/python/default.nix
index 7937fe171a06..863b820c5ffe 100644
--- a/pkgs/development/interpreters/python/default.nix
+++ b/pkgs/development/interpreters/python/default.nix
@@ -285,4 +285,8 @@ in {
     inherit passthruFun;
   };
 
+  rustpython = callPackage ./rustpython/default.nix {
+    inherit (darwin.apple_sdk.frameworks) SystemConfiguration;
+  };
+
 })
diff --git a/pkgs/development/interpreters/python/rustpython/default.nix b/pkgs/development/interpreters/python/rustpython/default.nix
new file mode 100644
index 000000000000..ad4382203223
--- /dev/null
+++ b/pkgs/development/interpreters/python/rustpython/default.nix
@@ -0,0 +1,44 @@
+{ lib
+, stdenv
+, rustPlatform
+, fetchFromGitHub
+, SystemConfiguration
+, python3
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "rustpython";
+  version = "unstable-2021-12-09";
+
+  src = fetchFromGitHub {
+    owner = "RustPython";
+    repo = "RustPython";
+    rev = "db3b3127df34ff5dd569301aa36ed71ae5624e4e";
+    sha256 = "sha256-YwGfXs3A5L/18mHnnWubPU3Y8EI9uU3keJ2HJnnTwv0=";
+  };
+
+  cargoHash = "sha256-T85kiPG80oZ4mwpb8Ag40wDHKx2Aens+gM7NGXan5lM=";
+
+  # freeze the stdlib into the rustpython binary
+  cargoBuildFlags = "--features=freeze-stdlib";
+
+  buildInputs = lib.optionals stdenv.isDarwin [ SystemConfiguration ];
+
+  checkInputs = [ python3 ];
+
+  meta = with lib; {
+    description = "Python 3 interpreter in written Rust";
+    homepage = "https://rustpython.github.io";
+    license = licenses.mit;
+    maintainers = with maintainers; [ prusnak ];
+
+    # TODO: Remove once nixpkgs uses newer SDKs that supports '*at' functions.
+    # Probably macOS SDK 10.13 or later. Check the current version in
+    # .../os-specific/darwin/apple-sdk/default.nix
+    #
+    # From the build logs:
+    #
+    # > Undefined symbols for architecture x86_64: "_utimensat"
+    broken = stdenv.isDarwin && stdenv.isx86_64;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index a57a684905bc..6472e0be03dc 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -13562,7 +13562,7 @@ with pkgs;
   python3Packages = python3.pkgs;
 
   pythonInterpreters = callPackage ./../development/interpreters/python { };
-  inherit (pythonInterpreters) python27 python37 python38 python39 python310 python3Minimal pypy27 pypy38;
+  inherit (pythonInterpreters) python27 python37 python38 python39 python310 python3Minimal pypy27 pypy38 rustpython;
 
   # Python package sets.
   python27Packages = python27.pkgs;