vimPlugins.nvim-treesitter.tests: use best practises for bash

        let

          pluginsToCheck =

            map (grammar: grammarToPlugin grammar)

              # true is here because there is `recurseForDerivations = true`

              # non-derivations are here because there is a `recurseForDerivations = true`

              (lib.filter lib.isDerivation (lib.attrValues tree-sitter-grammars));

        in

        runCommand "nvim-treesitter-test-queries-are-present-for-custom-grammars" { CI = true; } ''

          touch "$out"

          function check_grammar {

            EXPECTED_FILES="$2/parser/$1.so `find -L "$2/queries/$1" -name '*.scm'`"

            local grammar_name="$1"

            local grammar_path="$2"

            local grammar_queries=$(find -L "$grammar_path/queries/$grammar_name" -name '*.scm')

            local EXPECTED_FILES="$grammar_path/parser/$grammar_name.so $grammar_queries"

            echo

            echo expected files for $1:

            echo $EXPECTED_FILES

            echo ""

            echo "expected files for $grammar_name:"

            echo "$EXPECTED_FILES"

            # the derivation has only symlinks, and `find` doesn't count them as files

            # so we cannot use `-type f`

            for file in `find -L $2 -not -type d`; do

              echo checking $file

            # so we cannot use `-type f`, thus we use `-not -type d`

            for file in $(find -L $2 -not -type d); do

              echo "checking $file"

              # see https://stackoverflow.com/a/8063284

              if ! echo "$EXPECTED_FILES" | grep -wqF "$file"; then

                echo $file is unexpected, exiting

                echo "$file is unexpected, exiting"

                exit 1

              fi

            done

          }

          ${lib.concatLines (lib.forEach pluginsToCheck (g: "check_grammar \"${g.grammarName}\" \"${g}\""))}

          touch $out

        '';

      no-queries-for-official-grammars =

          pluginsToCheck = lib.filter lib.isDerivation (lib.attrValues vimPlugins.nvim-treesitter-parsers);

        in

        runCommand "nvim-treesitter-test-no-queries-for-official-grammars" { CI = true; } ''

          touch $out

          touch "$out"

          function check_grammar {

            echo checking $1...

            if [ -d $2/queries ]; then

              echo Queries dir exists in $1

              echo This is unexpected, see https://github.com/NixOS/nixpkgs/pull/344849#issuecomment-2381447839

            local grammar_name="$1"

            local grammar_path="$2"

            echo "checking $1..."

            if [ -d "$grammar_path/queries" ]; then

              echo "Queries directory exists in $grammar_name"

              echo "This is unexpected, see https://github.com/NixOS/nixpkgs/pull/344849#issuecomment-2381447839"

              exit 1

            fi

          }