$ nix build .#tree-sitter-grammars.tree-sitter-norg --show-trace
error: attribute 'currentSystem' missing

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/top-level/impure.nix:17:43:

           16|   # (build, in GNU Autotools parlance) platform.
           17|   localSystem ? { system = args.system or builtins.currentSystem; }
             |                                           ^
           18|

       … while evaluating anonymous lambda

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/stdenv/default.nix:7:1:

            6|
            7| { # Args just for stdenvs' usage
             | ^
            8|   lib

       … from call site

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/top-level/default.nix:127:12:

          126|
          127|   stages = stdenvStages {
             |            ^
          128|     inherit lib localSystem crossSystem config overlays crossOverlays;

       … while evaluating 'reverseList'

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/lib/lists.nix:393:17:

          392|   */
          393|   reverseList = xs:
             |                 ^
          394|     let l = length xs; in genList (n: elemAt xs (l - n - 1)) l;

       … from call site

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/stdenv/booter.nix:85:6:

           84|       // (stageFun prevStage))
           85|     (lib.lists.reverseList stageFuns);
             |      ^
           86|

       … while evaluating 'imap1'

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/lib/lists.nix:116:14:

          115|   */
          116|   imap1 = f: list: genList (n: f (n + 1) (elemAt list n)) (length list);
             |              ^
          117|

       … from call site

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/stdenv/booter.nix:78:30:

           77|   # isn't already set.
           78|   withAllowCustomOverrides = lib.lists.imap1
             |                              ^
           79|     (index: stageFun: prevStage:

       … while evaluating 'go'

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/stdenv/booter.nix:63:18:

           62|       len = builtins.length list;
           63|       go = pred: n:
             |                  ^
           64|         if n == len

       … from call site

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/stdenv/booter.nix:72:13:

           71|       lapp = lnul cur;
           72|       cur = go lapp 0;
             |             ^
           73|     in cur;

       … while evaluating 'dfold'

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/stdenv/booter.nix:60:27:

           59|   */
           60|   dfold = op: lnul: rnul: list:
             |                           ^
           61|     let

       … from call site

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/stdenv/booter.nix:142:4:

          141|
          142| in dfold folder postStage (_: {}) withAllowCustomOverrides
             |    ^

       … while evaluating anonymous lambda

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/stdenv/booter.nix:42:1:

           41| # other words, this does a foldr not foldl.
           42| stageFuns: let
             | ^
           43|

       … from call site

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/top-level/default.nix:131:10:

          130|
          131|   pkgs = boot stages;
             |          ^
          132|

       … while evaluating anonymous lambda

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/top-level/default.nix:58:108:

           57|     throwIfNot (lib.isList crossOverlays) "The crossOverlays argument to nixpkgs must be a list."
           58|     lib.foldr (x: throwIfNot (lib.isFunction x) "All crossOverlays passed to nixpkgs must be functions.") (r: r) crossOverlays
             |                                                                                                            ^
           59|     ;

       … from call site

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/top-level/default.nix:133:4:

          132|
          133| in checked pkgs
             |    ^

       … while evaluating anonymous lambda

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/top-level/default.nix:19:1:

           18|
           19| { # The system packages will be built on. See the manual for the
             | ^
           20|   # subtle division of labor between these two `*System`s and the three

       … from call site

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/top-level/impure.nix:82:1:

           81|
           82| import ./. (builtins.removeAttrs args [ "system" ] // {
             | ^
           83|   inherit config overlays localSystem;

       … while evaluating anonymous lambda

       at /nix/store/bn14fy2mc2p1q44681il8idfv5fr5x3z-source/pkgs/top-level/impure.nix:14:1:

           13|
           14| { # We put legacy `system` into `localSystem`, if `localSystem` was not passed.
             | ^
           15|   # If neither is passed, assume we are building packages on the current

       … from call site

       at /nix/store/3s59raz9x27y20ddgc65aslp657cvj0a-source/flake.nix:30:28:

           29|           };
           30|         })) // (let pkgs = import nixpkgs { }; in { defaultPackage = defaultPackage pkgs; });
             |                            ^
           31| }

       … while evaluating 'defaultPackage'

       at /nix/store/3s59raz9x27y20ddgc65aslp657cvj0a-source/flake.nix:12:24:

           11|     let
           12|       defaultPackage = pkgs: pkgs.callPackage (nixpkgs + "/pkgs/development/tools/parsing/tree-sitter/grammar.nix") { } {
             |                        ^
           13|         language = "norg";

       … from call site

       at /nix/store/3s59raz9x27y20ddgc65aslp657cvj0a-source/flake.nix:30:70:

           29|           };
           30|         })) // (let pkgs = import nixpkgs { }; in { defaultPackage = defaultPackage pkgs; });
             |                                                                      ^
           31| }

       … while evaluating the attribute 'defaultPackage'

       at /nix/store/3s59raz9x27y20ddgc65aslp657cvj0a-source/flake.nix:30:53:

           29|           };
           30|         })) // (let pkgs = import nixpkgs { }; in { defaultPackage = defaultPackage pkgs; });
             |                                                     ^
           31| }