error:
       … while calling the 'derivationStrict' builtin
         at «nix-internal»/derivation-internal.nix:37:12:
           36|
           37|   strict = derivationStrict drvAttrs;
             |            ^
           38|

       … while evaluating derivation 'nix-shell'
         whose name attribute is located at «github:NixOS/nixpkgs/567a49d1913ce81ac6e9582e3553dd90a955875f?narHash=sha256-lrp67w8AulE9Ks53n27I45ADSzbOCn4H%2BCNW1Ck8B%2B8%3D»/pkgs/stdenv/generic/make-derivation.nix:651:11

       … while evaluating attribute 'TC_ADA' of derivation 'nix-shell'
         at /var/lib/nixbot/worktrees/854938-2ce3519ce228-b83eaef6/shells.nix:231:7:
          230|       TC_HASKELL = mkLang "haskell" ghc "ghc ${./tests/sample.hs} -o hello";
          231|       TC_ADA = mkLang "ada" gnat ''
             |       ^
          232|         cp ${./tests/sample.adb} sample.adb

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: Unsupported system: aarch64-linux