stdenv: aarch64-darwin eval fails; stdenv/darwin is missing

[srid]

stdenv/default.nix still does import ./darwin when localSystem.isDarwin, but there is no stdenv/darwin directory. stdenv/README.md lists aarch64-darwin as unsupported; eval does not fail with an unsupported-platform error, it dies on the missing path. Nothing that instantiates pkgs.stdenv on Darwin can evaluate.

Seen from juspay/olai#527 on ci@petit (Darwin 25.5, aarch64-darwin).

Repro

Against corepkgs master (bb98f9ce0fbe) / ekapkgs (fonts branch d78cd92c, same corepkgs lock):

nix eval --impure --expr '
let
  pkgs = import (builtins.fetchTarball "https://github.com/ekala-project/corepkgs/archive/bb98f9ce0fbef041137b42ebc784fb6238bbc718.tar.gz") {
    system = "aarch64-darwin";
  };
in pkgs.stdenv.name
'

Error:

error: path '…/stdenv/darwin' does not exist
         at stdenv/default.nix:48:17:
           48|   stagesDarwin = import ./darwin bootArgs;

Same failure through ekapkgs:

nix eval --impure --expr '
let
  pkgs = import (builtins.fetchTarball "https://github.com/ekala-project/ekapkgs/archive/1bf6fb76074762dad66fe2c3446adab1bf396ae0.tar.gz") {
    system = "aarch64-darwin";
  };
in pkgs.stdenv.name
'

stdenv/ currently has linux/, generic/, cross/, release/ — no darwin/. The archived ekala-project/stdenv README claimed aarch64-darwin support before the reinit (corepkgs#36).

[jonringer]

Correct, haven't spent any time on these platforms yet.

[srid]

Slip up from AI

[srid]

Closing: Darwin support is not something we should be filing upstream about. Sorry for the noise.