diff --git a/sparrow.yaml b/sparrow.yaml
index 4f55ebe..7d8c397 100644
--- a/sparrow.yaml
+++ b/sparrow.yaml
@@ -1,88 +1,10 @@
-image:
-  - melezhik/sparrow:debian
 tasks:
   -
-    name: main
-    default: true
-    language: Raku
-    code: |
-      use Text::Table::Simple;
-      my @columns = ("Rakudo Version", "Status", "Time", "Linux Dist");
-      my @rows;
-      my $fail = False;
-      for config()<tasks><multi-versions><state><list><> -> $i {
-        @rows.push: [ $i<version>, $i<status>,  $i<time>, os() ];
-        $fail = True unless $i<status> eq "OK";
-      }
-      my @table = lol2table(@columns,@rows);
-      .say for @table;
-      die "some tests failed" if $fail == True;
-    depends:
-      -
-        name: multi-versions
-  -
-    name: multi-versions
-    language: Raku
-    config:
-      list:
-        # - 2022.04
-        - 2022.06
-        - 2022.07
-    code: |
-      my @state;
-      for config()<list><> -> $v {
-        my $s = %( version => $v );
-        if "{cache_root_dir()}/{$v}_ok".IO ~~ :e {
-          $s<status> = "OK";
-        } else {
-          $s<status> = "FAIL";
-        }
-        if "{cache_root_dir()}/{$v}_time".IO ~~ :e {
-          $s<time> = "{cache_root_dir()}/{$v}_time".IO.slurp();
-        } else {
-          $s<time> = "NA";
-        }
-        @state.push: $s;
-      }
-      update_state %( list => @state );
-    init: |
-      for config()<list><> -> $v {
-        run_task("test", %( version => $v ));
-      }
-    subtasks:
-      -
-        name: test
-        language: Bash
-        init: |
-          ignore_error
-        code: |
-          set -e
-
-          echo "Linux version: $os"
-
-          curl -sL https://rakudo.org/dl/rakudo/rakudo-moar-$version-01-linux-x86_64-gcc.tar.gz \
-          -o rakudo-moar-$version-01-linux-x86_64-gcc.tar.gz
-          tar -xzf rakudo-moar-$version-01-linux-x86_64-gcc.tar.gz          
-          eval "$(rakudo-moar-$version-01-linux-x86_64-gcc/scripts/set-env.sh)"
-
-          which raku
-          which zef
-
-          raku --version
-          zef --version
-          
-          cd source/
-          zef install . --deps-only --test-depends --build-depends --/test -to=home         
-          /usr/bin/time -f "%E real,%U user,%S sys | CPU Percentage: %P" -o "${cache_root_dir}/${version}_time" \
-          zef test . && touch "${cache_root_dir}/${version}_ok"
-          
-    depends:
-      -
-        name: install-deps
-  -
-    name: install-deps
+    name: zef-build
     language: Bash
+    default: true
     code: |
-      sudo apt-get install -y time 
-      zef install --/test Text::Table::Simple
- 
+      set -e
+      cd source/
+      zef install --deps-only --/test .
+      zef test .